ASTM B148-18

Standard Specification for Aluminum-Bronze Sand Castings

ABSTRACT
This specification establishes requirements for sand castings produced from copper-base alloys having the alloy numbers, commercial designations, and nominal compositions. The alloys the classified according to their nominal compositions: UNS No. C95200; UNS No. C95300; UNS No. C95400; UNS No. C95410; UNS No. C95500; UNS No. C95520; UNS No. C95600; UNS No. C95700; UNS No. C95800; UNS No. C95820; and UNS No. C95900. The castings shall conform to the chemical requirements specified. Mechanical properties shall be determined from separately cast test bar castings and shall meet the requirements. Brineel and Rockwell hardness readings shall be taken on 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 sand castings produced from copper-base alloys having the alloy numbers,2 commercial designations, and nominal compositions shown in Table 1.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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: Published
• Publication Date: 30-Sep-2018
• ICS: 77.150.10 - Aluminium products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.05 - Castings and Ingots for Remelting

Relations

• Replaces: ASTM B148-14 - Standard Specification for Aluminum-Bronze Sand Castings
• Effective Date: 01-Oct-2018
• Refers: ASTM E8/E8M-24 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jan-2024
• Refers: ASTM B846-19a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Aug-2019
• Refers: ASTM B846-19 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Jan-2019
• Refers: ASTM E18-18 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Jul-2018
• Refers: ASTM E18-17 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Jul-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 E8/E8M-16 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 15-Jul-2016
• Refers: ASTM E8/E8M-15 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Feb-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 E8/E8M-13 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jun-2013
• Refers: ASTM E18-12 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Dec-2012
• Refers: ASTM E10-12 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-Jan-2012

Overview

ASTM B148-18: Standard Specification for Aluminum-Bronze Sand Castings establishes the requirements for sand castings made from specific copper-base alloys. Published by ASTM International, this standard outlines the chemical, mechanical, and manufacturing criteria for a range of aluminum-bronze alloys identified by their Unified Numbering System (UNS) designations, including C95200 through C95900. Widely recognized in industries requiring durable, corrosion-resistant metal components, ASTM B148-18 provides essential quality and performance benchmarks for manufacturers, purchasers, and end-users.

Key Topics

Essential Aspects Covered by ASTM B148-18:

• Applicable Alloys: Covers copper-base alloys with designated UNS numbers (C95200, C95300, C95400, C95410, C95500, C95520, C95600, C95700, C95800, C95820, C95900).
• Chemical Composition: Specifies required limits for elements such as copper, aluminum, iron, nickel, manganese, and silicon to ensure optimal alloy performance.
• Mechanical Properties: Establishes minimum tensile strength, yield strength, elongation, and hardness values, with testing procedures for tension and hardness (Brinell and Rockwell).
• Manufacturing Requirements: Details procedures for heat treatment, casting, and optional weld repairs to maintain structural integrity.
• Testing and Inspection: Outlines sample preparation, methods for chemical and mechanical testing, and acceptance criteria for sand castings.
• Marking and Certification: Provides instructions for product identification and, where specified, certification to buyers regarding compliance.

Applications

ASTM B148-18 aluminum-bronze sand castings are valued for their strength, durability, and corrosion resistance, making them suitable for a wide range of applications:

• Marine Components: Used for ship propellers, seawater valves, and fittings, especially where resistance to saltwater corrosion is critical.
• Industrial Equipment: Employed in pumps, bearings, bushings, and gears that demand high wear resistance and mechanical stability.
• Power Generation: Suitable for components in turbines and power plant systems owing to their excellent mechanical properties under stress.
• Aerospace and Defense: Selected for parts exposed to demanding or corrosive environments, where reliability and longevity are vital.
• Oil & Gas: Utilized in offshore drilling and refinery equipment, taking advantage of aluminum-bronze’s resistance to sulfide stress corrosion cracking.

Adhering to ASTM B148-18 ensures consistent quality and performance in these and other high-stress environments, helping manufacturers and end-users meet industry and regulatory requirements.

Related Standards

Professionals working with aluminum-bronze sand castings in accordance with ASTM B148-18 may also reference the following standards to ensure comprehensive quality and testing:

• ASTM B208 - Practice for Preparing Tension Test Specimens for Copper Alloy Castings
• ASTM B824 - Specification for General Requirements for Copper Alloy Castings
• ASTM B846 - Terminology for Copper and Copper Alloys
• ASTM E8/E8M - Test Methods for Tension Testing of Metallic Materials
• ASTM E10 - Test Method for Brinell Hardness of Metallic Materials
• ASTM E18 - Test Methods for Rockwell Hardness of Metallic Materials
• ASTM E527 - Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

Referencing these related ASTM standards supports thorough compliance, robust quality assurance, and enhanced material performance in aluminum-bronze sand casting applications.

Keywords: ASTM B148-18, aluminum-bronze sand castings, copper alloy castings, UNS C95200, C95300, C95400, C95500, C95800, mechanical properties, chemical composition, marine castings, industrial standards

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:B148 −18
Standard Specification for
Aluminum-Bronze Sand Castings
This standard is issued under the fixed designation B148; 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* E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.1 This specification establishes requirements for sand
terials
castings produced from copper-base alloys having the alloy
2 E527 Practice for Numbering Metals and Alloys in the
numbers, commercialdesignations,andnominalcompositions
Unified Numbering System (UNS)
shown in Table 1.
1.2 The values stated in inch-pound units are to be regarded 3. Terminology
as standard. The values given in parentheses are mathematical
3.1 For definitions of terms related to copper and copper
conversions to SI units that are provided for information only
alloys, refer to Terminology B846.
and are not considered standard.
4. General Requirements
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard- 4.1 Material furnished under this specification shall con-
ization established in the Decision on Principles for the
form to the applicable requirements of Specification B824.
Development of International Standards, Guides and Recom-
5. Ordering Information
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. 5.1 Include the following specified choices when placing
orders for product under this specification as applicable:
2. Referenced Documents
5.1.1 ASTM designation and year of issue,
2.1 The following documents of the issue in effect on date 5.1.2 Copper or Copper Alloy UNS. No. designation,
of material purchase form a part of this specification to the 5.1.3 Temper, must include optional Heat Treatment when
extent referenced herein: needed,
3 5.1.4 Dimensions, diameter, and wall thickness (For tube or
2.2 ASTM Standards:
pipe: specify either O.D./I.D., O.D./Wall, or I.D./Wall unless
B208 Practice for Preparing Tension Test Specimens for
standard size such as type K are ordered; for flat products:
Copper Alloy Sand, Permanent Mold, Centrifugal, and
thickness, width, and edges; for rod, bar, or shapes: by
Continuous Castings
diameter or distance between parallel surfaces),
B824 Specification for General Requirements for Copper
5.1.5 Quantity of castings required,
Alloy Castings
5.1.6 Intended applications,
B846 Terminology for Copper and Copper Alloys
5.1.7 Specification title, number, and year of issue,
E8/E8M Test Methods for Tension Testing of Metallic Ma-
5.1.8 Pattern or drawing number and condition (cast,
terials
machined, and so forth),
5.1.9 Analysis of residual elements, if specified in the
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
purchase order (Specification B824),
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
5.1.10 Pressure test requirements, if specified in the pur-
Castings and Ingots for Remelting.
chase order (Specification B824),
Current edition approved Oct. 1, 2018. Published October 2018. Originally
approved in 1941. Last previous edition approved in 2014 as B148–14. DOI:
5.1.11 Soundness requirements, if specified in the purchase
10.1520/B0148–18.
order (Specification B824),
The UNS system for copper and copper alloys (see Practice E527) is a simple
5.1.12 Certification, if specified in the purchase order
expansion of the former standard designation system accomplished by the addition
(Specification B824),
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate
composition variations of the base alloy.
5.1.13 Test report, if specified in the purchase order (Speci-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
fication B824),
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1.14 Witness inspection, if specified in the purchase order
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (Specification B824),
*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
B148−18
TABLE 1 Nominal Compositions
Nominal Composition, %
Copper Alloy Old Commercial
UNS No. Designation Designation
Copper Nickel Iron Aluminum Silicon Manganese
C95200 9A Grade A 88.0 . . . 3.0 9.0 . . . . . .
A
C95300 9B Grade B 89.0 . . . 1.0 10.0 . . . . . .
A
C95400 9C Grade C 85.0 . . . 4.0 11.0 . . . . . .
A
C95410 . . 84.0 2.0 4.0 10.0 . .
A
C95500 9D Grade D 81.0 4.0 4.0 11.0 . . . . . .
A
C95520 . . 78.5 5.5 5.0 11.0 . .
C95600 9E Grade E 91.0 . . . . . . 7.0 2.0 . . .
C95700 9F Grade F 75.0 2.0 3.0 8.0 . . . 12.0
C95800 . . . . . . 81.3 4.5 4.0 9.0 . . . 1.2
C95820 . . . . . . 79.0 5.2 4.5 9.5 . . . 1.0
C95900 . . . . . . 87.5 . . . 4.5 13.0 . . . . . .
A
These grades respond to heat treatment.
5.1.15 Approvalofweldprocedureandrecordsofrepairs,if 6. Materials and Manufacture
specified in the purchase order (Section 10),
6.1 Materials:
5.1.16 ASME Boiler and Pressure Vessel Code application
6.1.1 The material of manufacture shall be sand castings of
(12.2 and Section 14),
Copper Alloys, UNS No. C95200, C95300, C95400, C95410,
5.1.17 Castings for seawater service (6.2.3), and
C95500, C95520, C95600, C95700, C95800, C95820, C95900
5.1.18 Product marking, if specified in the purchase order
of such purity and soundness as to be suitable for processing
(Specification B824).
into the products prescribed herein.
6.1.2 When specified in the contract or purchase order, that
5.2 When material is purchased for agencies of the U.S.
Government, the Supplementary Requirements of this specifi- heat identification or traceability is required, the purchaser
shall specify the details desired.
cation may be specified.
6.2 Manufacture:
6.2.1 As a specified option, Copper Alloy UNS Nos.
C95300, C95400, C95410, C95500, and C95520 may be
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
supplied in the heat-treated condition to obtain the higher
www.asme.org.
TABLE 2 Mechanical Requirements
Manganese-
Aluminum Bronze Nickel Aluminum Bronze Nickel
Silicon Aluminum Nickel Aluminum
Classification Aluminum
Bronze Aluminum Bronze
As-Cast As-Cast Bronze
Bronze
C95400 and
A B
Copper Alloy UNS No. C95200 C95300 C95500 C95820 C95600 C95700 C95800 C95900
C95410
Tensile strength, min, 65 65 75 90 94 60 90 85 .
C D
ksi (MPa ) (450) (450) (515) (620) (650) (415) (620) (585) .
E F
Yield strength, min, 25 25 30 40 39 28 40 35 .
C D F
ksi (MPa ) (270)
(170) (170) (205) (275) (195) (275) (240) .
Elongation in 2 in. 20 20 12 6 13 10 20 15 . . .
(50.8 mm), %
G
Brinell hardness No. 110 110 150 190 . . . . .
(3000-kg load)
Heat-Treated
C95400 and
H
Copper Alloy UNS No. C95300 C95500 C95520
C95410
Tensile strength, min, . 80 90 110 125 . . . .
C D
ksi (MPa) . (550) (620) (760) (862) . . . .
E F
Yield strength, min, . 40 45 60 95 . . . .
C D F
ksi (MPa) (655)
... (275) (310) (415) ... ... ... ...
Elongation in 2 in. . 12 6 5 2 . . . .
(50.8 min), %
G I
Brinell hardness No. . . . 160 190 200 255 . . . 241min
(3000-kg load)
A
As cast or temper annealed.
B
Normally supplied annealed between 1100 and 1300 °F for 4 h followed by air cooling.
C
ksi = 1000 psi.
D
See Appendix X1.
E
Yield strength shall be determined as the stress producing an elongation under load of 0.5 %, that is, 0.01 in. (0.254 mm) in a gage length of 2 in. (50.8 mm).
F C D
Yield strength at 0.2 % offset, min, ksi (MPa) .
G
For information only.
H
Copper Alloy UNS No. C95520 is used in the heat-treated condition only.
I
Sand castings and sand cast test specimens shall be 25 HRC minimum.
B148−18
mechanical properties shown in Table 2. Suggested heat
Copper Plus Named Elements,
Copper Alloy UNS Number min, %
treatments for these alloys are given in Table 3.Actual practice
may vary by manufacturer.
C95200 99.0
C95300 99.0
6.2.2 For better corrosion resistance in seawater
C95400 99.5
applications, castings in Copper Alloy UNS No. C95800 may
C95410 99.5
be given a temper anneal heat treatment at 1200 to 1300 °F
C95500 99.5
C95520 99.5
(650 to 705 °C) for 6 h minimum. Cooling shall be by the
C95600 99.0
fastest means possible that will not cause excessive distortion
C95700 99.5
or cracking. Propeller castings shall be exempt from this
C95800 99.5
C95820 99.2
requirement.
C95900 99.5
6.2.3 Copper Alloy UNS No. C95520 is used in the heat-
treated condition only.
8. Temper
6.2.4 Copper Alloy UNS No. C95900 is normally supplied
8.1 The suggested heat treatment (tempers) for products
annealed between 1100 °F (595 °C) and 1300 °F (705 °C)
described in this specification are given in Table 3.
followed by air cooling.
6.2.5 Copper Alloy UNS No. C95820 is supplied in the
9. Mechanical Property Requirements
as-cast condition.
9.1 Tensile Strength Requirements:
6.2.6 Separately cast test bar coupons representing castings
9.1.1 The mechanical properties shall be determined from
made in Copper Alloy UNS Nos. C95300HT, C95400HT,
separately cast test bar castings.
C95410HT, C95500HT, C95520HT, C95800 temper annealed,
9.1.2 Product furnished under this specification shall con-
and C95900 annealed shall be heat treated with the castings.
form to the mechanical properties requirements specified in
Table 2, when tested in accordance with Test Methods E8/
7. Chemical Composition
E8M.
9.1.3 Acceptance or rejection based upon mechanical prop-
7.1 The material shall conform to the chemical composition
requirements in Table 4 for the copper alloy UNS. No. erties shall depend on tensile strength, yield strength, and
elongation.
designation specified in the ordering information.
7.1.1 Results of analysis of the product sample shall con-
9.2 Hardness Requirement:
form to the composition requirements within the permitted
9.2.1 The approximate Brinell hardness values given in
analytical variance specified in Table 4.
Table 2 are for general information and assistance in testing,
7.1.2 These composition limits do not preclude the presence and shall not be used as a basis for product rejection.
of other elements. Limits may be established by agreement
10. Casting Repair
between manufacturer or supplier and purchaser for the un-
named elements.
10.1 Alloys included in this specification are generally
7.1.3 For alloys in which Copper is listed as remainder,
weldable. Weld repairs may be made at the manufacturer’s
copper is the difference between the sum of results of all
discretion provided each excavation does not exceed 20 % of
elements determined and 100 %. When all the elements in
the casting section or wall thickness or 4 % of the casting
Tab
...

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: B148 − 14 B148 − 18
Standard Specification for
Aluminum-Bronze Sand Castings
This standard is issued under the fixed designation B148; 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 sand castings produced from copper-base alloys having the alloy numbers,
commercial designations, and nominal compositions shown in Table 1.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B824 Specification for General Requirements for Copper Alloy Castings
B846 Terminology for Copper and Copper Alloys
B950 Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
4. General Requirements
4.1 Material furnished under this specification shall conform to the applicable requirements of Specification B824.
5. Ordering Information
5.1 Include the following specified choices when placing orders for product under this specification as applicable:
5.1.1 ASTM designation and year of issue,
5.1.2 Copper or Copper Alloy UNS. No. designation,
5.1.3 Temper, must include optional Heat Treatment when needed,
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 April 1, 2014Oct. 1, 2018. Published May 2014October 2018. Originally approved in 1941. Last previous edition approved in 20092014 as
B148 – 97 (2009).B148–14. DOI: 10.1520/B0148-14.10.1520/B0148–18.
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.” 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
B148 − 18
TABLE 1 Nominal Compositions
Nominal Composition, %
Copper Alloy Old Commercial
UNS No. Designation Designation
Copper Nickel Iron Aluminum Silicon Manganese
C95200 9A Grade A 88.0 . . . 3.0 9.0 . . . . . .
A
C95300 9B Grade B 89.0 . . . 1.0 10.0 . . . . . .
A
C95400 9C Grade C 85.0 . . . 4.0 11.0 . . . . . .
A
C95410 . . . . . . 84.0 2.0 4.0 10.0 . . . . . .
A
C95500 9D Grade D 81.0 4.0 4.0 11.0 . . . . . .
A
C95520 . . . . . . 78.5 5.5 5.0 11.0 . . . . . .
C95600 9E Grade E 91.0 . . . . . . 7.0 2.0 . . .
C95700 9F Grade F 75.0 2.0 3.0 8.0 . . . 12.0
C95800 . . . . . . 81.3 4.5 4.0 9.0 . . . 1.2
C95820 . . . . . . 79.0 5.2 4.5 9.5 . . . 1.0
C95900 . . . . . . 87.5 . . . 4.5 13.0 . . . . . .
A
These grades respond to heat treatment.
5.1.4 Dimensions, diameter, and wall thickness (For tube or pipe: specify either O.D./I.D., O.D./Wall, or I.D./Wall unless
standard size such as type K are ordered; for flat products: thickness, width, and edges; for rod, bar, or shapes: by diameter or
distance between parallel surfaces),
5.1.5 Quantity of castings required,
5.1.6 Intended applications,
5.1.7 Specification title, number, and year of issue,
5.1.8 Pattern or drawing number and condition (cast, machined, and so forth),
5.1.9 Analysis of residual elements, if specified in the purchase order (Specification B824),
5.1.10 Pressure test requirements, if specified in the purchase order (Specification B824),
5.1.11 Soundness requirements, if specified in the purchase order (Specification B824),
5.1.12 Certification, if specified in the purchase order (Specification B824),
5.1.13 Test report, if specified in the purchase order (Specification B824),
5.1.14 Witness inspection, if specified in the purchase order (Specification B824),
5.1.15 Approval of weld procedure and records of repairs, if specified in the purchase order (Section 10),
5.1.16 ASME Boiler and Pressure Vessel Code application (12.2 and Section 14),
5.1.17 Castings for seawater service (6.2.3), and
5.1.18 Product marking, if specified in the purchase order (Specification B824).
5.2 When material is purchased for agencies of the U.S. Government, the Supplementary Requirements of this specification may
be specified.
6. Materials and Manufacture
6.1 Materials:
6.1.1 The material of manufacture shall be sand castings of Copper Alloys, UNS No. C95200, C95300, C95400, C95410,
C95500, C95520, C95600, C95700, C95800, C95820, C95900 of such purity and soundness as to be suitable for processing into
the products prescribed herein.
6.1.2 When specified in the contract or purchase order, that heat identification or traceability is required, the purchaser shall
specify the details desired.
6.2 Manufacture:
6.2.1 As a specified option, Copper Alloy UNS Nos. C95300, C95400, C95410, C95500, and C95520 may be supplied in the
heat-treated condition to obtain the higher mechanical properties shown in Table 2. Suggested heat treatments for these alloys are
given in Table 3. Actual practice may vary by manufacturer.
6.2.2 For better corrosion resistance in seawater applications, castings in Copper Alloy UNS No. C95800 may be given a temper
anneal heat treatment at 1250 6 50°F (675 6 10°C)1200 to 1300 °F (650 to 705 °C) for 6 h minimum. Cooling shall be by the
fastest means possible that will not cause excessive distortion or cracking. Propeller castings shall be exempt from this
requirement.
6.2.3 Copper Alloy UNS No. C95520 is used in the heat-treated condition only.
6.2.4 Copper Alloy UNS No. C95900 is normally supplied annealed between 1100°F (595°C) and 1300°F (705°C)1100 °F
(595 °C) and 1300 °F (705 °C) followed by air cooling.
6.2.5 Copper Alloy UNS No. C95820 is supplied in the as-cast condition.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
B148 − 18
TABLE 2 Mechanical Requirements
Manganese-
Aluminum Bronze Nickel Aluminum Bronze Nickel
Silicon Aluminum Nickel Aluminum
Classification Aluminum
Bronze Aluminum Bronze
As-Cast As-Cast Bronze
Bronze
C95400 and
A B
Copper Alloy UNS No. C95200 C95300 C95500 C95820 C95600 C95700 C95800 C95900
C95410
Tensile strength, min, 65 65 75 90 94 60 90 85 . . .
C D
ksi (MPa ) (450) (450) (515) (620) (650) (415) (620) (585) . . .
E F
Yield strength, min, 25 25 30 40 39 28 40 35 . . .
C D F
ksi (MPa ) (270)
(170) (170) (205) (275) (195) (275) (240) . . .
Elongation in 2 in. 20 20 12 6 13 10 20 15 . . .
(50.8 mm), %
G
Brinell hardness No. 110 110 150 190 . . . . . . . . . . . . . . .
(3000-kg load)
Heat-Treated
C95400 and
H
Copper Alloy UNS No. C95300 C95500 C95520
C95410
Tensile strength, min, . . . 80 90 110 125 . . . . . . . . . . . .
C D
ksi (MPa) . . . (550) (620) (760) (862) . . . . . . . . . . . .
E F
Yield strength, min, . . . 40 45 60 95 . . . . . . . . . . . .
C D F
ksi (MPa) (655)
. . . (275) (310) (415) . . . . . . . . . . . .
Elongation in 2 in. . . . 12 6 5 2 . . . . . . . . . . . .
(50.8 min), %
G I
Brinell hardness No. . . . 160 190 200 255 . . . . . . . . . 241 min
(3000-kg load)
A
As cast or temper annealed.
B
Normally supplied annealed between 1100 and 1300°F1300 °F for 4 h followed by air cooling.
C
ksi = 1000 psi.
D
See Appendix X1.
E
Yield strength shall be determined as the stress producing an elongation under load of 0.5 %, that is, 0.01 in. (0.254 mm) in a gage length of 2 in. (50.8 mm).
F C D
Yield strength at 0.2 % offset, min, ksi (MPa) .
G
For information only.
H
Copper Alloy UNS No. C95520 is used in the heat-treated condition only.
I
Sand castings and sand cast test specimens shall be 25 HRC minimum.
TABLE 3 Suggested Heat Treatments
Solution Treatment Annealing Treatment
Copper
(Not Less than 1 h/in. (Not Less than 2 h
Alloy
Followed by Followed by
UNS No.
Water Quench) Air Cool)
C95300 1585-1635°F (860-890°C) 1150-1225°F (620-660°C)
C95300 1585–1635 °F (860-890 °C) 1150–1225 °F (620–660 °C)
C95400
1600-1675°F (870-910°C) 1150-1225°F (620-660°C)
C95410
C95400
1600–1675 °F (870–910 °C) 1150–1225 °F (620–660 °C)
C95410
(2 h followed by
C95500
water quench) 925-1000°F (495-540°C)
C95520
1600-1700°F (870-925°C)
(2 h followed by
C95500
water quench) 925–1000 °F (495–540 °C)
C95520
1600–1700 °F (870–925 °C)
A
C95800 1250 ± 50°F (675 ± 10°C),
6 h minimum followed
by air cooling
A
C95800 1200–1300 °F (650–705 °C),
6 h minimum followed
by air cooling
A
Corrosion inhibiting heat treatment, depends on agreement between the
manufacturer and buyer.
6.2.6 Separately cast test bar coupons representing castings made in Copper Alloy UNS Nos. C95300HT, C95400HT,
C95410HT, C95500HT, C95520HT, C95800 temper annealed, and C95900 annealed shall be heat treated with the castings.
7. Chemical Composition
7.1 The material shall conform to the chemical composition requirements in Table 4 for the copper alloy UNS. No. designation
specified in the ordering information.
B148 − 18
TABLE 4 Chemical Requirements
Manganese-
Silicon Nickel
Nickel Aluminum
Classification Aluminum Bronze Nickel Aluminum Bronze Aluminum Aluminum
Aluminum Bronze
Bronze Bronze
Bronze
A B
Copper Alloy C95200 C95300 C95400 C95410 C95500 C95520 C95600 C95700 C95800 C95820 C95900
UNS No.
Composition, %
Copper 86.0 min 86.0 min 83.0 min 83.0 min 78.0 min 74.5 min 88.0 min 71.0 min 79.0 min 77.5 min remainder
Aluminum 8.5–9.5 9.0–11.0 10.0–11.5 10.0–11.5 10.0–11.5 10.5–11.5 6.0–8.0 7.0–8.5 8.5–9.5 9.0–10.0 12.0–13.5
C
Iron 2.5–4.0 0.8–1.5 3.0–5.0 3.0–5.0 3.0–5.0 4.0–5.5 . . . 2.0–4.0 3.5–4.5 4.0–5.0 3.0–5.0
Manganese . . . . . . 0.50 max 0.50 max 3.5 max 1.5 max . . . 11.0–14.0 0.8–1.5 1.5 max 1.5 max
C
Nickel (incl . . . . . . 1.5 max 1.5–2.5 3.0–5.5 4.2–6.0 0.25 max 1.5–3.0 4.0–5.0 4.5–5.8 0.50 max
cobalt)
Silicon . . . . . . . . . . . . . . . 0.15 max 1.8–3.2 0.10 max 0.10 m
...