ASTM B763/B763M-15(2022)

Standard Specification for Copper Alloy Sand Castings for Valve Applications

ABSTRACT
This specification establishes requirements for copper alloy sand castings for valve applications. The castings shall conform to the chemical composition requirements specified. Mechanical properties shall be determined from separately cast test bars, and shall conform with the requirements. Brinell hardness readings shall be taken in the grip end of the tension test bar and shall be made in accordance with the specified requirements.
SCOPE
1.1 This specification establishes requirements for copper alloy sand castings for valve applications. Nominal compositions of the alloys defined by this specification are shown in Table 1.2  
Note 1: This specification does not cover Copper Alloy UNS Nos. C83600, C92200, C96200, and C96400. These alloys are also used in valve applications. They are covered by the following specifications:
C83600: B62  
C92200: B61  
C96200: B369  
C96400: B369  
1.2 The castings produced under this specification are used in products which may be manufactured in advance and supplied for sale from stock by the manufacturer.  
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Apr-2022
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.05 - Castings and Ingots for Remelting

Relations

• Replaced By: ASTM B763/B763M-23 - Standard Specification for Copper Alloy Sand Castings for Valve Applications
• Effective Date: 01-Oct-2023
• Refers: ASTM B62-17 - Standard Specification for Composition Bronze or Ounce Metal Castings
• Effective Date: 01-Apr-2017
• Refers: ASTM B824-17 - Standard Specification for General Requirements for Copper Alloy Castings
• Effective Date: 01-Apr-2017
• Refers: ASTM B824-16 - Standard Specification for General Requirements for Copper Alloy Castings
• Effective Date: 15-Oct-2016
• Refers: ASTM B369-09(2016) - Standard Specification for Copper-Nickel Alloy Castings
• Effective Date: 01-Apr-2016
• Refers: ASTM B62-15 - Standard Specification for Composition Bronze or Ounce Metal Castings
• Effective Date: 01-May-2015
• Refers: ASTM E10-14 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-May-2014
• Refers: ASTM B824-14 - Standard Specification for General Requirements for Copper Alloy Castings
• Effective Date: 01-Apr-2014
• Refers: ASTM B61-08(2013) - Standard Specification for Steam or Valve Bronze Castings
• Effective Date: 01-Oct-2013
• Refers: ASTM E10-12 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-Jan-2012
• Refers: ASTM B824-11 - Standard Specification for General Requirements for Copper Alloy Castings
• Effective Date: 01-Apr-2011
• Refers: ASTM E10-10 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-Jun-2010
• Refers: ASTM B369-09 - Standard Specification for Copper-Nickel Alloy Castings
• Effective Date: 01-Apr-2009
• Refers: ASTM B824-09 - Standard Specification for General Requirements for Copper Alloy Castings
• Effective Date: 01-Apr-2009
• Refers: ASTM B62-09 - Standard Specification for Composition Bronze or Ounce Metal Castings
• Effective Date: 01-Apr-2009

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B763/B763M −15 (Reapproved 2022)
Standard Specification for
Copper Alloy Sand Castings for Valve Applications
This standard is issued under the fixed designation B763/B763M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification establishes requirements for copper
B61 Specification for Steam or Valve Bronze Castings
alloy sand castings for valve applications. Nominal composi-
B62 Specification for Composition Bronze or Ounce Metal
tions of the alloys defined by this specification are shown in
2 Castings
Table 1.
B208 Practice for Preparing Tension Test Specimens for
NOTE 1—This specification does not cover Copper Alloy UNS Nos. Copper Alloy Sand, Permanent Mold, Centrifugal, and
C83600, C92200, C96200, and C96400. These alloys are also used in
Continuous Castings
valve applications. They are covered by the following specifications:
B369 Specification for Copper-Nickel Alloy Castings
C83600: B62
B824 Specification for General Requirements for Copper
C92200: B61
Alloy Castings
C96200: B369
E10 Test Method for Brinell Hardness of Metallic Materials
C96400: B369
E527 Practice for Numbering Metals and Alloys in the
1.2 The castings produced under this specification are used
Unified Numbering System (UNS)
in products which may be manufactured in advance and
supplied for sale from stock by the manufacturer. 3. General Requirements
3.1 The following sections of Specification B824 form a
1.3 Units—The values stated in either SI units or inch-
part of this specification.
pound units are to be regarded separately as standard. The
3.1.1 Terminology,
values stated in each system are not necessarily exact equiva-
3.1.2 Other Requirements,
lents; therefore, to ensure conformance with the standard, each
3.1.3 Dimensions, Mass, and Permissible Variations,
system shall be used independently of the other, and values
3.1.4 Workmanship, Finish, and Appearance,
from the two systems shall not be combined.
3.1.5 Sampling,
1.4 This international standard was developed in accor-
3.1.6 Number of Tests and Retests,
dance with internationally recognized principles on standard-
3.1.7 Specimen Preparation,
ization established in the Decision on Principles for the 3.1.8 Test Methods,
Development of International Standards, Guides and Recom- 3.1.9 Significance of Numerical Limits,
3.1.10 Inspection,
mendations issued by the World Trade Organization Technical
3.1.11 Rejection and Rehearing,
Barriers to Trade (TBT) Committee.
3.1.12 Certification,
3.1.13 Test Report,
3.1.14 Product Marking,
3.1.15 Packaging and Package Marking, and
3.1.16 Supplementary Requirements.
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
4. Ordering Information
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
4.1 Include the following information when placing orders
Castings and Ingots for Remelting.
Current edition approved May 1, 2022. Published May 2022. Originally
for product under this specification, as applicable:
approved in 1986. Last previous edition approved in 2015 as B763/B763M – 15.
DOI: 10.1520/B0763_B0763M-15R22.
2 3
The UNS system for copper and copper alloys (see Practice E527) is a simple For referenced ASTM standards, visit the ASTM website, www.astm.org, or
expansion of the former standard designation system accomplished by the addition contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Standards volume information, refer to the standard’s Document Summary page on
composition variations of the base alloy. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B763/B763M−15 (2022)
TABLE 1 Nominal Compositions
Copper Alloy Alumi- Man- Sili- Sele-
Classification Commercial Designation Copper Tin Lead Zinc Nickel Iron Bismuth
UNS No. num ganese con nium
1 1
Leaded red brass C83450 88 2 ⁄2 26 ⁄2 1 . . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . . . . . . . . . . . . . . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . . . . . . . . . . . . . . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15, or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . . . .
Leaded yellow brass C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . . . . .
C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . . . . .
A
Yellow brass C85470 yellowbrass 62.5 2.5 . 34.5 . . 0.5 . . . .
Leaded yellow brass C85700 leaded naval brass 61 1 1 37 . . . . . . . . . . . . . . . . . . . . .
High-strength yellow C86200 high-strength manganese bronze 63 . . . . . . 27 . . . 3 4 3 . . . . . . . . .
brass
C86300 high-strength manganese bronze 61 . . . . . . 27 . . . 3 6 3 . . . . . . . . .
1 1
C86400 leaded manganese bronze 58 1 1 38 . . . 1 ⁄2 ⁄2 . . .
C86500 No. 1 manganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . . . . .
C86700 leaded manganese bronze 58 1 1 34 . . . 2 2 2 . . . . . . . . .
Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . . . . . . . . . . . . . 1 4 . . . . . .
1 1
brass C87400 silicon brass 82 . . . ⁄2 14 . . . . 3 ⁄2 . .
C87500 silicon brass 82 . . . . . . 14 . . . . . . . . . . . . 4 . . . . . .
C87600 silicon bronze 89 . . . . . . 6 . . . . . . . . . . . . 5 . . . . . .
C87610 silicon bronze 92 . . . . . . 4 . . . . . . . . . . . . 4 . . . . . .
C89530 Bismuth-Selenium 86.5 4.7 . . . 8.0 . . . . . . . . . . . . . . . 1.5 .20
C89535 Bismuth 86.5 3.0 . . . 7.0 .65 . . . . . . . . . . . . 1.4 . . .
Bismuth brass C89537 bismuth brass 85 4.5 . . . 9 . . . . . . . . . . . . 0.9 1.7 . . .
B
C89570 bismuth brass 60.5 0.8 . . . 36.5 0.32 . . . 0.5 . . . . . . 1.0 . . .
C
C89720 bismuth brass 67.5 1 . . . 29.8 . . . . . . 0.5 . . . 0.5 0.7 . . .
Bismuth semi-red brass C89844 bismuth brass 84 ⁄2 4 . 8 . . . . . 3 .
Tin bronze and leaded tin C90300 88-8-0-4, or modified “G” bronze 88 8 . . . 4 . . . . . . . . . . . . . . . . . . . . .
bronze
C90500 88-10-0-2, on “G” bronze 88 10 . . . 2 . . . . . . . . . . . . . . . . . . . . .
C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . . . . . . . . . . . . . . . . . .
C92600 87-10-1-2 87 10 1 2 . . . . . . . . . . . . . . . . . . . . .
High-lead tin bronze C93200 83-7-7-3 83 7 7 3 . . . . . . . . . . . . . . . . . . . . .
C93500 85-5-9-1 85 5 9 1 . . . . . . . . . . . . . . . . . . . . .
C93700 80-10-10 80 10 10 . . . . . . . . . . . . . . . . . . . . . . . .
C93800 78-7-15 78 7 15 . . . . . . . . . . . . . . . . . . . . . . . .
C94300 71-5-24 71 5 24 . . . . . . . . . . . . . . . . . . . . . . . .
Nickel-tin bronze and C94700 nickel-tin bronze grade “A” 88 5 . . . 2 5 . . . . . . . . . . . . . . . . . .
leaded nickel-tin C94800 leaded nickel-tin bronze grade “B” 87 5 1 2 5 . . . . . . . . . . . . . . . . . .
bronze
C94900 leaded nickel-tin bronze grade “C” 80 5 5 5 5 . . . . . . . . . . . . . . . . . .
Aluminum bronze C95200 Grade A 88 . . . . . . . . . . . . 3 9 . . . . . . . . . . . .
C95300 Grade B 89 . . . . . . . . . . . . 1 10 . . . . . . . . . . . .
C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . . . . .
C95410 84 . . . . . . . . . 2 4 10 . . . . . . . . . . . .
Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . . . . .
Nickel aluminum bronze C95500 Grade D 81 . . . . . . . . . 4 4 11 . . . . . . . . . . . .
C95800 81.3 . . . . . . . . . 4.5 4 9 1.2 . . . . . . . . .
Leaded nickel bronze C97300 12 % leaded nickel silver 57 2 9 20 12 . . . . . . . . . . . . . . . . . .
C97600 20 % leaded nickel silver 64 4 4 8 20 . . . . . . . . . . . . . . . . . .
C97800 25 % leaded nickel silver 66 5 2 2 25 . . . . . . . . . . . . . . . . . .
Special alloys C99400 87 . . . . . . 4.4 3.0 3.0 1.6 . . . 1.0 . . . . . .
C99500 87 . . . . . . 1.5 4.5 4.0 1.7 . . . 1.3 . . . . . .
A
Phosphorus 0.13
B
Phosphorus 0.1
C
Antimony 0.07, Boron 0.001.
4.1.1 Specification title, number, and year of approval; 4.2 The following requirements are optional and should be
4.1.2 Quantity of castings; specified in the purchase order when required.
4.1.3 Copper Alloy UNS Number and temper (as-cast, 4.2.1 Pressure test or soundness requirements (Specification
heat-treated, etc.); B824),
4.1.4 Pattern or drawing number and condition (as-cast, 4.2.2 Approval of weld repair and records of repair (Section
machined, etc.); 10),
4.1.5 When castings are purchased for agencies of the U.S. 4.2.3 Certification (Specification B824),
Government, the Supplementary Requirements of Specifica- 4.2.4 Foundry test report (Specification B824),
tion B824 may be specified. 4.2.5 Witness inspection (Specification B824),
B763/B763M−15 (2022)
4.2.6 Product marking (Specification B824), castings shall be cast to the form and dimensions shown in
4.2.7 Castings for seawater service (5.1). Figs. 1 or 2 of Practice B208. For all other alloys listed in this
specification test bars shall be cast to the form and dimensions
5. Materials and Manufacture
shown in Figs. 2, 3 or 4 of Practice B208.
5.1 For better corrosion resistance in sea water applications,
9. Test Methods
castings in Copper Alloy UNS No. C95800 shall be given a
9.1 Analytical chemical methods are given in Specification
temper anneal heat treatment at 1250 °F 6 50 °F
B824 (Test Methods section).
[675 °C 6 10 °C] for 6 h minimum. Cooling shall be by the
fastest means possible that will not cause excessive distortion
9.2 Brinell hardness readings, if specified on the purchase
or cracking.
order, shall be taken in the grip end of the tension test bar and
shall be made in accordance withTest Method E10, except that
5.2 Copper Alloy UNS Nos. C94700, C95300, C95400,
a 3000 kg load shall be used.
C95410, and C95500 may be supplied in the heat-treated
condition to obtain the higher mechanical properties shown in
10. Casting Repair
Table 4. Suggested heat treatments for these alloys and copper
10.1 Copper Alloy UNS Nos. C95200, C95300, C95400,
alloy UNS No. C95520 are given in Table 5. Actual practice
C95410, C95500, C95600, and C95800 included in this speci-
may vary by manufacturer.
fication are generally weldable. Weld repairs may be made at
5.3 Separately cast test bar coupons representing castings
the manufacturer’s discretion provided each excavation does
made in Copper Alloy UNS Nos. C94700HT, C95300HT,
not exceed 20 % of the casting section or wall thickness or 4 %
C95400HT, C95410HT, and C95500HT shall be heat treated
of the casting surface area.
with the castings.
10.2 Excavations that exceed those described in 10.1 may
6. Chemical Composition be made at the manufacturer’s discretion except that when
specified in the ordering information (4.2.2), the weld proce-
6.1 The castings shall conform to the requirements for
dure shall be approved by the purchaser and the following
major elements shown in Table 2.
records shall be maintained:
6.2 These specification limits do not preclude the presence
10.2.1 Asketch or drawing showing the dimensions, depth,
of other elements. Limits may be established and analysis
and location of excavations,
required for unnamed elements agreed upon between the
10.2.2 Post-weld heat treatment, when applicable,
manufacturer or supplier and the purchaser. Copper or zinc
10.2.3 Weld repair inspection results,
may be given as remainder and may be taken as the difference
10.2.4 Casting identification number,
between the sum of all elements analyzed and 100 %.When all
10.2.5 Weld procedure identification number,
named elements in Table 2 are analyzed, their sum shall be as
10.2.6 Welder identification, and
specified in Table 3.
10.2.7 Name of inspector.
10.3 The casting shall not be impregnated without approval
7. Mechanical Properties
of the purchaser.
7.1 Mechanical properties shall be determined from sepa-
10.4 The castings shall not be plugged.
rately cast test bars, and shall conform with the requirements
shown in Table 4.
10.5 OtherCopperAlloyUNSNumbersinthisspecification
are not weldable.
8. Sampling
11. Keywords
8.1 Copper Alloy UNS Nos. C86200, C86300, C86400,
C86500, C86700, C95200, C95300, C95400, C95410, 11.1 copperalloycastings;copper-basealloycastings;valve
C95500, C95600, C95800, C99400, and C99500 test bar castings
B763/B763M−15 (2022)
TABLE 2 Chemical Requirements
Composition, % max, except as indicated
Copper Alloy Nickel
Copper Tin Lead Zinc Aluminum Manganese Silicon Bismuth Selenium Iron Antimony Sulfur Phosphorus
UNS No. incl Cobalt
C83450 87.0–89.0 2.0–3.5 1.5–3.0 5.5–7.5 0.8–2.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C83800 82.0–83.8 3.3–4.2 5.0–7.0 5.0–8.0 1.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C84400 78.0–82.0 2.3–3.5 6.0–8.0 7.0–10.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
A B
C84800 75.0–77.0 2.0–3.0 5.5–7.0 13.0–17.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
C85200 70.0–74.0 0.7–2.0 1.5–3.8 20.0–27.0 1.0 0.005 . . . 0.05 . . . . . . 0.6 0.20 0.05 0.02
C85400 65.0–70.0 0.50–1.5 1.5–3.8 24.0–32.0 1.0 0.35 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C85470 60.0–65.0 1.0–4.0 0.09 Rem . . . 0.10–1.0 . . . . . . . . . . . . 0.20 . . . . . . 0.02–0.25
C85700 58.0–64.0 0.50–1.5 0.8–1.5 32.0–40.0 1.0 0.8 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C86200 60.0–66.0 0.20 0.20 22.0–28.0 1.0 3.0–4.9 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86300 60.0–66.0 0.20 0.20 22.0–28.0 1.0 5.0–7.5 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86400 56.0–62.0 0.50–1.5 0.50–1.5 34.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86500 55.0–60.0 1.0 0.40 36.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86700 55.0–60.0 1.5 0.50–1.5 30.0–38.0 1.0 1.0–3.0 1.0–3.5 . . . . . . . . . 1.0–3.0 . . . . . . . . .
C87300 94.0 min . . . 0.09 0.25 . . . . . . 0.8–1.5 3.5–4.5 . . . . . . 0.20 . . . . . . . . .
C87400 79.0 min . . . 1.0 12.0–16.0 . . . 0.8 . . . 2.5–4.0 . . . . . . . . . . . . . . . . . .
C87500 79.0 min . . .
...

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B763/B763M − 15 (Reapproved 2022)
Standard Specification for
Copper Alloy Sand Castings for Valve Applications
This standard is issued under the fixed designation B763/B763M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification establishes requirements for copper
B61 Specification for Steam or Valve Bronze Castings
alloy sand castings for valve applications. Nominal composi-
B62 Specification for Composition Bronze or Ounce Metal
tions of the alloys defined by this specification are shown in
Castings
Table 1.
B208 Practice for Preparing Tension Test Specimens for
Copper Alloy Sand, Permanent Mold, Centrifugal, and
NOTE 1—This specification does not cover Copper Alloy UNS Nos.
C83600, C92200, C96200, and C96400. These alloys are also used in
Continuous Castings
valve applications. They are covered by the following specifications:
B369 Specification for Copper-Nickel Alloy Castings
C83600: B62
B824 Specification for General Requirements for Copper
C92200: B61
Alloy Castings
C96200: B369
E10 Test Method for Brinell Hardness of Metallic Materials
C96400: B369
E527 Practice for Numbering Metals and Alloys in the
1.2 The castings produced under this specification are used
Unified Numbering System (UNS)
in products which may be manufactured in advance and
supplied for sale from stock by the manufacturer.
3. General Requirements
3.1 The following sections of Specification B824 form a
1.3 Units—The values stated in either SI units or inch-
part of this specification.
pound units are to be regarded separately as standard. The
3.1.1 Terminology,
values stated in each system are not necessarily exact equiva-
3.1.2 Other Requirements,
lents; therefore, to ensure conformance with the standard, each
3.1.3 Dimensions, Mass, and Permissible Variations,
system shall be used independently of the other, and values
3.1.4 Workmanship, Finish, and Appearance,
from the two systems shall not be combined.
3.1.5 Sampling,
1.4 This international standard was developed in accor-
3.1.6 Number of Tests and Retests,
dance with internationally recognized principles on standard-
3.1.7 Specimen Preparation,
ization established in the Decision on Principles for the
3.1.8 Test Methods,
Development of International Standards, Guides and Recom- 3.1.9 Significance of Numerical Limits,
mendations issued by the World Trade Organization Technical 3.1.10 Inspection,
3.1.11 Rejection and Rehearing,
Barriers to Trade (TBT) Committee.
3.1.12 Certification,
3.1.13 Test Report,
3.1.14 Product Marking,
3.1.15 Packaging and Package Marking, and
3.1.16 Supplementary Requirements.
This specification is under the jurisdiction of ASTM Committee B05 on Copper
4. Ordering Information
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
4.1 Include the following information when placing orders
Castings and Ingots for Remelting.
Current edition approved May 1, 2022. Published May 2022. Originally for product under this specification, as applicable:
approved in 1986. Last previous edition approved in 2015 as B763/B763M – 15.
DOI: 10.1520/B0763_B0763M-15R22.
2 3
The UNS system for copper and copper alloys (see Practice E527) is a simple For referenced ASTM standards, visit the ASTM website, www.astm.org, or
expansion of the former standard designation system accomplished by the addition contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Standards volume information, refer to the standard’s Document Summary page on
composition variations of the base alloy. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B763/B763M − 15 (2022)
TABLE 1 Nominal Compositions
Copper Alloy Alumi- Man- Sili- Sele-
Classification Commercial Designation Copper Tin Lead Zinc Nickel Iron Bismuth
UNS No. num ganese con nium
1 1
Leaded red brass C83450 88 2 ⁄2 2 6 ⁄2 1 . . . . . . . . . . . . . . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . . . . . . . . . . . . . . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . . . . . . . . . . . . . . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15, or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . . . . . . . . . . . . . . . . . .
Leaded yellow brass C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . . . . .
C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . . . . .
A
Yellow brass C85470 yellow brass 62.5 2.5 . . . 34.5 . . . . . . 0.5 . . . . . . . . . . . .
Leaded yellow brass C85700 leaded naval brass 61 1 1 37 . . . . . . . . . . . . . . . . . . . . .
High-strength yellow C86200 high-strength manganese bronze 63 . . . . . . 27 . . . 3 4 3 . . . . . . . . .
brass
C86300 high-strength manganese bronze 61 . . . . . . 27 . . . 3 6 3 . . . . . . . . .
1 1
C86400 leaded manganese bronze 58 1 1 38 . . . 1 ⁄2 ⁄2 . . . . . . . . .
C86500 No. 1 manganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . . . . .
C86700 leaded manganese bronze 58 1 1 34 . . . 2 2 2 . . . . . . . . .
Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . . . . . . . . . . . . . 1 4 . . . . . .
1 1
brass C87400 silicon brass 82 . . . ⁄2 14 . . . . . . . . . . . . 3 ⁄2 . . . . . .
C87500 silicon brass 82 . . . . . . 14 . . . . . . . . . . . . 4 . . . . . .
C87600 silicon bronze 89 . . . . . . 6 . . . . . . . . . . . . 5 . . . . . .
C87610 silicon bronze 92 . . . . . . 4 . . . . . . . . . . . . 4 . . . . . .
C89530 Bismuth-Selenium 86.5 4.7 . . . 8.0 . . . . . . . . . . . . . . . 1.5 .20
C89535 Bismuth 86.5 3.0 . . . 7.0 .65 . . . . . . . . . . . . 1.4 . . .
Bismuth brass C89537 bismuth brass 85 4.5 . . . 9 . . . . . . . . . . . . 0.9 1.7 . . .
B
C89570 bismuth brass 60.5 0.8 . . . 36.5 0.32 . . . 0.5 . . . . . . 1.0 . . .
C
C89720 bismuth brass 67.5 1 . . . 29.8 . . . . . . 0.5 . . . 0.5 0.7 . . .
Bismuth semi-red brass C89844 bismuth brass 84 ⁄2 4 . . . 8 . . . . . . . . . . . . . . . 3 . . .
Tin bronze and leaded tin C90300 88-8-0-4, or modified “G” bronze 88 8 . . . 4 . . . . . . . . . . . . . . . . . . . . .
bronze
C90500 88-10-0-2, on “G” bronze 88 10 . . . 2 . . . . . . . . . . . . . . . . . . . . .
C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . . . . . . . . . . . . . . . . . .
C92600 87-10-1-2 87 10 1 2 . . . . . . . . . . . . . . . . . . . . .
High-lead tin bronze C93200 83-7-7-3 83 7 7 3 . . . . . . . . . . . . . . . . . . . . .
C93500 85-5-9-1 85 5 9 1 . . . . . . . . . . . . . . . . . . . . .
C93700 80-10-10 80 10 10 . . . . . . . . . . . . . . . . . . . . . . . .
C93800 78-7-15 78 7 15 . . . . . . . . . . . . . . . . . . . . . . . .
C94300 71-5-24 71 5 24 . . . . . . . . . . . . . . . . . . . . . . . .
Nickel-tin bronze and C94700 nickel-tin bronze grade “A” 88 5 . . . 2 5 . . . . . . . . . . . . . . . . . .
leaded nickel-tin C94800 leaded nickel-tin bronze grade “B” 87 5 1 2 5 . . . . . . . . . . . . . . . . . .
bronze
C94900 leaded nickel-tin bronze grade “C” 80 5 5 5 5 . . . . . . . . . . . . . . . . . .
Aluminum bronze C95200 Grade A 88 . . . . . . . . . . . . 3 9 . . . . . . . . . . . .
C95300 Grade B 89 . . . . . . . . . . . . 1 10 . . . . . . . . . . . .
C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . . . . .
C95410 84 . . . . . . . . . 2 4 10 . . . . . . . . . . . .
Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . . . . .
Nickel aluminum bronze C95500 Grade D 81 . . . . . . . . . 4 4 11 . . . . . . . . . . . .
C95800 81.3 . . . . . . . . . 4.5 4 9 1.2 . . . . . . . . .
Leaded nickel bronze C97300 12 % leaded nickel silver 57 2 9 20 12 . . . . . . . . . . . . . . . . . .
C97600 20 % leaded nickel silver 64 4 4 8 20 . . . . . . . . . . . . . . . . . .
C97800 25 % leaded nickel silver 66 5 2 2 25 . . . . . . . . . . . . . . . . . .
Special alloys C99400 87 . . . . . . 4.4 3.0 3.0 1.6 . . . 1.0 . . . . . .
C99500 87 . . . . . . 1.5 4.5 4.0 1.7 . . . 1.3 . . . . . .
A
Phosphorus 0.13
B
Phosphorus 0.1
C
Antimony 0.07, Boron 0.001.
4.1.1 Specification title, number, and year of approval; 4.2 The following requirements are optional and should be
4.1.2 Quantity of castings; specified in the purchase order when required.
4.1.3 Copper Alloy UNS Number and temper (as-cast, 4.2.1 Pressure test or soundness requirements (Specification
heat-treated, etc.); B824),
4.1.4 Pattern or drawing number and condition (as-cast, 4.2.2 Approval of weld repair and records of repair (Section
machined, etc.); 10),
4.1.5 When castings are purchased for agencies of the U.S. 4.2.3 Certification (Specification B824),
Government, the Supplementary Requirements of Specifica- 4.2.4 Foundry test report (Specification B824),
tion B824 may be specified. 4.2.5 Witness inspection (Specification B824),
B763/B763M − 15 (2022)
4.2.6 Product marking (Specification B824), castings shall be cast to the form and dimensions shown in
4.2.7 Castings for seawater service (5.1). Figs. 1 or 2 of Practice B208. For all other alloys listed in this
specification test bars shall be cast to the form and dimensions
5. Materials and Manufacture
shown in Figs. 2, 3 or 4 of Practice B208.
5.1 For better corrosion resistance in sea water applications,
9. Test Methods
castings in Copper Alloy UNS No. C95800 shall be given a
9.1 Analytical chemical methods are given in Specification
temper anneal heat treatment at 1250 °F 6 50 °F
B824 (Test Methods section).
[675 °C 6 10 °C] for 6 h minimum. Cooling shall be by the
fastest means possible that will not cause excessive distortion
9.2 Brinell hardness readings, if specified on the purchase
or cracking.
order, shall be taken in the grip end of the tension test bar and
shall be made in accordance with Test Method E10, except that
5.2 Copper Alloy UNS Nos. C94700, C95300, C95400,
a 3000 kg load shall be used.
C95410, and C95500 may be supplied in the heat-treated
condition to obtain the higher mechanical properties shown in
10. Casting Repair
Table 4. Suggested heat treatments for these alloys and copper
10.1 Copper Alloy UNS Nos. C95200, C95300, C95400,
alloy UNS No. C95520 are given in Table 5. Actual practice
C95410, C95500, C95600, and C95800 included in this speci-
may vary by manufacturer.
fication are generally weldable. Weld repairs may be made at
5.3 Separately cast test bar coupons representing castings
the manufacturer’s discretion provided each excavation does
made in Copper Alloy UNS Nos. C94700HT, C95300HT,
not exceed 20 % of the casting section or wall thickness or 4 %
C95400HT, C95410HT, and C95500HT shall be heat treated
of the casting surface area.
with the castings.
10.2 Excavations that exceed those described in 10.1 may
be made at the manufacturer’s discretion except that when
6. Chemical Composition
specified in the ordering information (4.2.2), the weld proce-
6.1 The castings shall conform to the requirements for
dure shall be approved by the purchaser and the following
major elements shown in Table 2.
records shall be maintained:
6.2 These specification limits do not preclude the presence
10.2.1 A sketch or drawing showing the dimensions, depth,
of other elements. Limits may be established and analysis
and location of excavations,
required for unnamed elements agreed upon between the
10.2.2 Post-weld heat treatment, when applicable,
manufacturer or supplier and the purchaser. Copper or zinc
10.2.3 Weld repair inspection results,
may be given as remainder and may be taken as the difference
10.2.4 Casting identification number,
between the sum of all elements analyzed and 100 %. When all
10.2.5 Weld procedure identification number,
named elements in Table 2 are analyzed, their sum shall be as
10.2.6 Welder identification, and
specified in Table 3.
10.2.7 Name of inspector.
10.3 The casting shall not be impregnated without approval
7. Mechanical Properties
of the purchaser.
7.1 Mechanical properties shall be determined from sepa-
10.4 The castings shall not be plugged.
rately cast test bars, and shall conform with the requirements
shown in Table 4.
10.5 Other Copper Alloy UNS Numbers in this specification
are not weldable.
8. Sampling
11. Keywords
8.1 Copper Alloy UNS Nos. C86200, C86300, C86400,
C86500, C86700, C95200, C95300, C95400, C95410, 11.1 copper alloy castings; copper-base alloy castings; valve
C95500, C95600, C95800, C99400, and C99500 test bar castings
B763/B763M − 15 (2022)
TABLE 2 Chemical Requirements
Composition, % max, except as indicated
Copper Alloy Nickel
Copper Tin Lead Zinc Aluminum Manganese Silicon Bismuth Selenium Iron Antimony Sulfur Phosphorus
UNS No. incl Cobalt
C83450 87.0–89.0 2.0–3.5 1.5–3.0 5.5–7.5 0.8–2.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C83800 82.0–83.8 3.3–4.2 5.0–7.0 5.0–8.0 1.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C84400 78.0–82.0 2.3–3.5 6.0–8.0 7.0–10.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
A B
C84800 75.0–77.0 2.0–3.0 5.5–7.0 13.0–17.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
C85200 70.0–74.0 0.7–2.0 1.5–3.8 20.0–27.0 1.0 0.005 . . . 0.05 . . . . . . 0.6 0.20 0.05 0.02
C85400 65.0–70.0 0.50–1.5 1.5–3.8 24.0–32.0 1.0 0.35 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C85470 60.0–65.0 1.0–4.0 0.09 Rem . . . 0.10–1.0 . . . . . . . . . . . . 0.20 . . . . . . 0.02–0.25
C85700 58.0–64.0 0.50–1.5 0.8–1.5 32.0–40.0 1.0 0.8 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C86200 60.0–66.0 0.20 0.20 22.0–28.0 1.0 3.0–4.9 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86300 60.0–66.0 0.20 0.20 22.0–28.0 1.0 5.0–7.5 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86400 56.0–62.0 0.50–1.5 0.50–1.5 34.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86500 55.0–60.0 1.0 0.40 36.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86700 55.0–60.0 1.5 0.50–1.5 30.0–38.0 1.0 1.0–3.0 1.0–3.5 . . . . . . . . . 1.0–3.0 . . . . . . . . .
C87300 94.0 min . . . 0.09 0.25 . . . . . . 0.8–1.5 3.5–4.5 . . . . . . 0.20 . . . . . . . . .
C87400 79.0 min . . . 1.0 12.0–16.0 . . . 0.8 . . . 2.5–4.0 . . . . . . . . . . . . . . . . . .
C87500 79.0 min . . . 0.09
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B763/B763M − 15 B763/B763M − 15 (Reapproved 2022)
Standard Specification for
Copper Alloy Sand Castings for Valve Applications
This standard is issued under the fixed designation B763/B763M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes requirements for copper alloy sand castings for valve applications. Nominal compositions of the
alloys defined by this specification are shown in Table 1.
NOTE 1—This specification does not cover Copper Alloy UNS Nos. C83600, C92200, C96200, and C96400. These alloys are also used in valve
applications. They are covered by the following specifications:
C83600: B62
C92200: B61
C96200: B369
C96400: B369
1.2 The castings produced under this specification are used in products which may be manufactured in advance and supplied for
sale from stock by the manufacturer.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
each system mayare not benecessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be
used independently of the other. Combiningother, and values from the two systems may result in non-conformance with the
standard.shall not be combined.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
B61 Specification for Steam or Valve Bronze Castings
B62 Specification for Composition Bronze or Ounce Metal Castings
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on Castings
and Ingots for Remelting.
Current edition approved May 1, 2015May 1, 2022. Published May 2015May 2022. Originally approved in 1986. Last previous edition approved in 20142015 as
B763/B763M – 14.B763/B763M – 15. DOI: 10.1520/B0763_B0763M-15.10.1520/B0763_B0763M-15R22.
The UNS system for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of a
prefix “C” and a suffix “00”.“00.” The suffix can be used to accommodate composition variations of the base alloy.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B763/B763M − 15 (2022)
TABLE 1 Nominal Compositions
Copper Alloy Alumi- Man- Sili- Sele-
Classification Commercial Designation Copper Tin Lead Zinc Nickel Iron Bismuth
UNS No. num ganese con nium
1 1
Leaded red brass C83450 88 2 ⁄2 2 6 ⁄2 1 . . . . . . . . . . . . . . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . . . . . . . . . . . . . . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . . . . . . . . . . . . . . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15, or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . . . . . . . . . . . . . . . . . .
Leaded yellow brass C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . . . . .
C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . . . . .
A
Yellow brass C85470 yellow brass 62.5 2.5 . . . 34.5 . . . . . . 0.5 . . . . . . . . . . . .
Leaded yellow brass C85700 leaded naval brass 61 1 1 37 . . . . . . . . . . . . . . . . . . . . .
High-strength yellow C86200 high-strength manganese bronze 63 . . . . . . 27 . . . 3 4 3 . . . . . . . . .
brass
C86300 high-strength manganese bronze 61 . . . . . . 27 . . . 3 6 3 . . . . . . . . .
1 1
C86400 leaded manganese bronze 58 1 1 38 . . . 1 ⁄2 ⁄2 . . . . . . . . .
C86500 No. 1 manganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . . . . .
C86700 leaded manganese bronze 58 1 1 34 . . . 2 2 2 . . . . . . . . .
Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . . . . . . . . . . . . . 1 4 . . . . . .
1 1
brass C87400 silicon brass 82 . . . ⁄2 14 . . . . . . . . . . . . 3 ⁄2 . . . . . .
C87500 silicon brass 82 . . . . . . 14 . . . . . . . . . . . . 4 . . . . . .
C87600 silicon bronze 89 . . . . . . 6 . . . . . . . . . . . . 5 . . . . . .
C87610 silicon bronze 92 . . . . . . 4 . . . . . . . . . . . . 4 . . . . . .
C89530 Bismuth-Selenium 86.5 4.7 . . . 8.0 . . . . . . . . . . . . . . . 1.5 .20
C89535 Bismuth 86.5 3.0 . . . 7.0 .65 . . . . . . . . . . . . 1.4 . . .
Bismuth brass C89537 bismuth brass 85 4.5 . . . 9 . . . . . . . . . . . . 0.9 1.7 . . .
B
C89570 bismuth brass 60.5 0.8 . . . 36.5 0.32 . . . 0.5 . . . . . . 1.0 . . .
C
C89720 bismuth brass 67.5 1 . . . 29.8 . . . . . . 0.5 . . . 0.5 0.7 . . .
Bismuth semi-red brass C89844 bismuth brass 84 ⁄2 4 . . . 8 . . . . . . . . . . . . . . . 3 . . .
Tin bronze and leaded tin C90300 88-8-0-4, or modified “G” bronze 88 8 . . . 4 . . . . . . . . . . . . . . . . . . . . .
bronze
C90500 88-10-0-2, on “G” bronze 88 10 . . . 2 . . . . . . . . . . . . . . . . . . . . .
C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . . . . . . . . . . . . . . . . . .
C92600 87-10-1-2 87 10 1 2 . . . . . . . . . . . . . . . . . . . . .
High-lead tin bronze C93200 83-7-7-3 83 7 7 3 . . . . . . . . . . . . . . . . . . . . .
C93500 85-5-9-1 85 5 9 1 . . . . . . . . . . . . . . . . . . . . .
C93700 80-10-10 80 10 10 . . . . . . . . . . . . . . . . . . . . . . . .
C93800 78-7-15 78 7 15 . . . . . . . . . . . . . . . . . . . . . . . .
C94300 71-5-24 71 5 24 . . . . . . . . . . . . . . . . . . . . . . . .
Nickel-tin bronze and C94700 nickel-tin bronze grade “A” 88 5 . . . 2 5 . . . . . . . . . . . . . . . . . .
leaded nickel-tin C94800 leaded nickel-tin bronze grade “B” 87 5 1 2 5 . . . . . . . . . . . . . . . . . .
bronze
C94900 leaded nickel-tin bronze grade “C” 80 5 5 5 5 . . . . . . . . . . . . . . . . . .
Aluminum bronze C95200 Grade A 88 . . . . . . . . . . . . 3 9 . . . . . . . . . . . .
C95300 Grade B 89 . . . . . . . . . . . . 1 10 . . . . . . . . . . . .
C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . . . . .
C95410 84 . . . . . . . . . 2 4 10 . . . . . . . . . . . .
Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . . . . .
Nickel aluminum bronze C95500 Grade D 81 . . . . . . . . . 4 4 11 . . . . . . . . . . . .
C95800 81.3 . . . . . . . . . 4.5 4 9 1.2 . . . . . . . . .
Leaded nickel bronze C97300 12 % leaded nickel silver 57 2 9 20 12 . . . . . . . . . . . . . . . . . .
C97600 20 % leaded nickel silver 64 4 4 8 20 . . . . . . . . . . . . . . . . . .
C97800 25 % leaded nickel silver 66 5 2 2 25 . . . . . . . . . . . . . . . . . .
Special alloys C99400 87 . . . . . . 4.4 3.0 3.0 1.6 . . . 1.0 . . . . . .
C99500 87 . . . . . . 1.5 4.5 4.0 1.7 . . . 1.3 . . . . . .
A
Phosphorus 0.13
B
Phosphorus 0.1
C
Antimony 0.07, Boron 0.001.
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B369 Specification for Copper-Nickel Alloy Castings
B824 Specification for General Requirements for Copper Alloy Castings
E10 Test Method for Brinell Hardness of Metallic Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. General Requirements
3.1 The following sections of Specification B824 form a part of this specification.
3.1.1 Terminology,
B763/B763M − 15 (2022)
3.1.2 Other Requirements,
3.1.3 Dimensions, Mass, and Permissible Variations,
3.1.4 Workmanship, Finish, and Appearance,
3.1.5 Sampling,
3.1.6 Number of Tests and Retests,
3.1.7 Specimen Preparation,
3.1.8 Test Methods,
3.1.9 Significance of Numerical Limits,
3.1.10 Inspection,
3.1.11 Rejection and Rehearing,
3.1.12 Certification,
3.1.13 Test Report,
3.1.14 Product Marking,
3.1.15 Packaging and Package Marking, and
3.1.16 Supplementary Requirements.
4. Ordering Information
4.1 Include the following information when placing orders for product under this specification, as applicable:
4.1.1 Specification title, number, and year of approval,approval;
4.1.2 Quantity of castings,castings;
4.1.3 Copper Alloy UNS Number and temper (as-cast, heat-treated, etc.),etc.);
4.1.4 Pattern or drawing number and condition (as-cast, machined, etc.),etc.);
4.1.5 When castings are purchased for agencies of the U.S. Government, the Supplementary Requirements of Specification B824
may be specified.
4.2 The following requirements are optional and should be specified in the purchase order when required.
4.2.1 Pressure test or soundness requirements (Specification B824),
4.2.2 Approval of weld repair and records of repair (Section 10),
4.2.3 Certification (Specification B824),
4.2.4 Foundry test report (Specification B824),
4.2.5 Witness inspection (Specification B824),
B763/B763M − 15 (2022)
4.2.6 Product marking (Specification B824),
4.2.7 Castings for seawater service (5.1).
5. Materials and Manufacture
5.1 For better corrosion resistance in sea water applications, castings in Copper Alloy UNS No. C95800 shall be given a temper
anneal heat treatment at 1250 6 50°F [675 6 10°C]1250 °F 6 50 °F [675 °C 6 10 °C] for 6-h6 h minimum. Cooling shall be by
the fastest means possible that will not cause excessive distortion or cracking.
5.2 Copper Alloy UNS Nos. C94700, C95300, C95400, C95410, and C95500 may be supplied in the heat-treated condition to
obtain the higher mechanical properties shown in Table 4. Suggested heat treatments for these alloys and copper alloy UNS No.
C95520 are given in Table 5. Actual practice may vary by manufacturer.
5.3 Separately cast test bar coupons representing castings made in Copper Alloy UNS Nos. C94700HT, C95300HT, C95400HT,
C95410HT, and C95500HT shall be heat treated with the castings.
6. Chemical Composition
6.1 The castings shall conform to the requirements for major elements shown in Table 2.
6.2 These specification limits do not preclude the presence of other elements. Limits may be established and analysis required for
unnamed elements agreed upon between the manufacturer or supplier and the purchaser. Copper or zinc may be given as remainder
and may be taken as the difference between the sum of all elements analyzed and 100 %. When all named elements in Table 2 are
analyzed, their sum shall be as specified in Table 3.
7. Mechanical Properties
7.1 Mechanical properties shall be determined from separately cast test bars, and shall conform with the requirements shown in
Table 4.
8. Sampling
8.1 Copper Alloy UNS Nos. C86200, C86300, C86400, C86500, C86700, C95200, C95300, C95400, C95410, C95500, C95600,
C95800, C99400, and C99500 test bar castings shall be cast to the form and dimensions shown in Figs. 1 or 2 of Practice B208.
For all other alloys listed in this specification test bars shall be cast to the form and dimensions shown in Figs. 2, 3 or 4 of Practice
B208.
9. Test Methods
9.1 Analytical chemical methods are given in Specification B824 (Test Methods section).
9.2 Brinell hardness readings, if specified on the purchase order, shall be taken in the grip end of the tension test bar and shall
be made in accordance with Test Method E10, except that a 3000-kg3000 kg load shall be used.
10. Casting Repair
10.1 Copper Alloy UNS Nos. C95200, C95300, C95400, C95410, C95500, C95600, and C95800 included in this specification are
generally weldable. Weld repairs may be made at the manufacturer’s discretion provided each excavation does not exceed 20 %
of the casting section or wall thickness or 4 % of the casting surface area.
10.2 Excavations that exceed those described in 10.1 may be made at the manufacturer’s discretion except that when specified in
the ordering information (4.2.2), the weld procedure shall be approved by the purchaser and the following records shall be
maintained:
B763/B763M − 15 (2022)
TABLE 2 Chemical Requirements
Composition, % max, except as indicated
Copper Alloy Nickel
Copper Tin Lead Zinc Aluminum Manganese Silicon Bismuth Selenium Iron Antimony Sulfur Phosphorus
UNS No. incl Cobalt
C83450 87.0–89.0 2.0–3.5 1.5–3.0 5.5–7.5 0.8–2.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C83800 82.0–83.8 3.3–4.2 5.0–7.0 5.0–8.0 1.0 0.005 . . . 0.005 . . . . . . 0.30 0.25 0.08 0.03
A B
C84400 78.0–82.0 2.3–3.5 6.0–8.0 7.0–10.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
A B
C84800 75.0–77.0 2.0–3.0 5.5–7.0 13.0–17.0 1.0 0.005 . . . 0.005 . . . . . . 0.40 0.25 0.08 0.02
C85200 70.0–74.0 0.7–2.0 1.5–3.8 20.0–27.0 1.0 0.005 . . . 0.05 . . . . . . 0.6 0.20 0.05 0.02
C85400 65.0–70.0 0.50–1.5 1.5–3.8 24.0–32.0 1.0 0.35 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C85470 60.0–65.0 1.0–4.0 0.09 Rem . . . 0.10–1.0 . . . . . . . . . . . . 0.20 . . . . . . 0.02–0.25
C85700 58.0–64.0 0.50–1.5 0.8–1.5 32.0–40.0 1.0 0.8 . . . 0.05 . . . . . . 0.7 . . . . . . . . .
C86200 60.0–66.0 0.20 0.20 22.0–28.0 1.0 3.0–4.9 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86300 60.0–66.0 0.20 0.20 22.0–28.0 1.0 5.0–7.5 2.5–5.0 . . . . . . . . . 2.0–4.0 . . . . . . . . .
C86400 56.0–62.0 0.50–1.5 0.50–1.5 34.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86500 55.0–60.0 1.0 0.40 36.0–42.0 1.0 0.50–1.5 0.10–1.5 . . . . . . . . . 0.40–2.0 . . . . . . . . .
C86700 55.0–60.0 1.5 0.50–1.5 30.0–38.0 1.0 1.0–3.0 1.0–3.5 . . . . . . . . . 1.0–3.0 . . . . . . . . .
C87300 94.0 min . . . 0.09 0.25 . . . . . . 0.8–1.5 3.5–4.5 . . . . . . 0.20 . . . . . . . . .
C87400 79.0 min . . . 1.0 12.0–16.0 . . . 0.8 . . . 2.5–4.0 . . . . . . . . . . . . . . . . . .
C87500 79.0 min . . . 0.09 12.0–16.0 . . . 0.50 . . . 3.0–5.0 . . . . . . . . . . . . . . .
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