ASTM B176-08(2013)
(Specification)Standard Specification for Copper-Alloy Die Castings
Standard Specification for Copper-Alloy Die Castings
ABSTRACT
This specification establishes the requirements for copper-alloy die castings and covers Copper Alloy UNS Nos. C85700, C85800, C86500, C87800, C99700, and C99750. The material shall conform to the chemical composition requirements prescribed for copper, tin, lead, zinc, iron, nickel, cobalt, aluminum, manganese, silicon, antimony, sulphur, and phosphorus. Unless specified, acceptance of die castings under this specification shall not depend on mechanical properties determined by tension or impact tests. Requirements for sampling for chemical analysis, dimensions, mass, internal soundness, and pressure tightness are given.
SCOPE
1.1 This specification establishes the requirements for copper-alloy die castings. The alloys specified are Copper Alloy UNS Nos. C85700, C85800, C86500, C87800, C99700, and C99750.2
1.2 Units—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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:B176 −08(Reapproved 2013)
Standard Specification for
Copper-Alloy Die Castings
This standard is issued under the fixed designation B176; 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 Department of Defense.
1. Scope 2.4 Military Standards:
MIL-STD-129 Marking for Shipment and Storage (Military
1.1 This specification establishes the requirements for
Agencies)
copper-alloy die castings. The alloys specified are Copper
MIL-P-116 Methods of Preservation
Alloy UNS Nos. C85700, C85800, C86500, C87800, C99700,
and C99750.
3. General Requirements
1.2 Units—The values stated in inch-pound units are to be
3.1 The following sections of Specification B824 constitute
regarded as standard. The values given in parentheses are
a part of this specification.
mathematical conversions to SI units that are provided for
3.1.1 Terminology (Section 3),
information only and are not considered standard.
3.1.2 Number of Tests and Retests (Section 10) (Note to
2. Referenced Documents
users: Paragraph 10.3 of Specification B824 applies only when
mechanical requirements are specified in the purchase order.),
2.1 ASTM Standards:
3.1.3 Test Methods (Section 12),
B824 Specification for General Requirements for Copper
3.1.4 Significance of Numerical Limits (Section 13),
Alloy Castings
3.1.5 Inspection (Section 14),
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Ma- 3.1.6 Rejection and Rehearing (Section 15),
3.1.7 Certification (Section 16),
terials
E23 Test Methods for Notched Bar Impact Testing of Me- 3.1.8 Test Report (Section 17),
tallic Materials 3.1.9 Product Marking (Section 18), and
E255 Practice for Sampling Copper and Copper Alloys for
3.1.10 Supplementary Requirements.
the Determination of Chemical Composition
3.2 In addition, when a section with a title identical to that
E527 Practice for Numbering Metals and Alloys in the
referenced in 3.1, above, appears in this specification, it
Unified Numbering System (UNS)
contains additional requirements which supplement those ap-
2.2 American Die Casting Institute:
pearing in Specification B824.
“E” Series Product Standards
2.3 Federal Standard:
4. Terminology
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
4.1 For general terms related to copper and copper alloys,
1 refer to Terminology B846.
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
Castings and Ingots for Remelting.
5. Ordering Information
Current edition approved Oct. 1, 2013. Published November 2013. Originally
approved in 1942. Last previous edition approved in 2008 as B176 – 08. DOI: 5.1 Include the following information when placing orders
10.1520/B0176-08R13.
for die castings under this specification as applicable:
The UNS system for copper and copper alloys (see Practice E527) is a simple
5.1.1 Specification title, number, and year of issue,
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 5.1.2 Part name and number,
composition variations of the base alloy.
5.1.3 Copper Alloy UNS Number,
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.4 Quantity and delivery schedule, as required,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.5 Engineering drawing of die casting, when required,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
giving all necessary dimensions and tolerances and showing
Available from theAmerican Die Casting Institute, 2340 Des PlainesAve., Des
latest revisions and allowances for machining, if any. Location
Plaines, IL 60018.
5 ofejectorpinmarksorpartinglinesshallbeattheoptionofthe
Available from DLA Document Services, Building 4/D, 700 Robbins Avenue,
Philadelphia, PA 19111-5094, http://quicksearch.dla.mil/ manufacturer unless specifically designated on the drawing.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B176−08 (2013)
TABLE 2 Sum of All Named Elements Analyzed
5.1.6 When die castings are purchased for agencies of the
U.S. government the Supplementary Requirements of Specifi- Copper Alloy Copper Plus Named
UNS No. Elements, % min
cation B824 may be specified.
C85700 98.7
5.2 The following requirements are optional and should be
C85800 98.7
C86500 99.0
specified in the purchase order when required.
C87800 99.5
5.2.1 Inspection lot sampling (Section 8),
C99700 99.7
5.2.2 Chemical analysis of residual elements (Section 4),
C99750 99.7
5.2.3 Soundness requirements (Section 9),
5.2.4 Mechanical requirements (Section 5),
5.2.5 Special requirements (Section 9),
5.2.6 Certification (Specification B824),
cal properties determined by tension or impact tests. Table
5.2.7 Foundry test report (Specification B824),
X1.1 shows typical mechanical properties.
5.2.8 Witness inspection (Specification B824),
5.2.9 Product marking (Specification B824), and 7.2 When minimum mechanical properties are specified in
5.2.10 Packaging requirements (Section 12). the purchase order the mechanical properties shall be agreed
upon between the manufacturer or supplier and the purchaser.
6. Chemical Composition
6.1 The castings shall conform to the requirements for 8. Dimensions, Mass, and Permissible Variations
major elements as shown in Table 1.
8.1 Permissible variations in dimensions shall be within the
6.2 These specification composition limits do not preclude limits specified on the drawings or in the contract or purchase
the presence of other elements. Limits may be established and order.
analysis required for unnamed elements agreed upon between 8.1.1 Any dimensions for which a tolerance is not specified
the manufacturer or supplier and the purchaser. Copper or zinc shall be in accord with ADCI Product Standard Series E1 to
may be given as remainder and may be taken as the difference E16 inclusive.
between the sum of all elements analyzed and 100 %.When all
named elements in Table 1 are analyzed, their sum shall be as 9. Sampling
specified in Table 2.
9.1 An inspection lot shall consist of the production from
6.3 It is recognized that residual elements may be present in each die or compound die on each machine for each 24 h
during the first week of normal operation and the production
cast copper-base alloys. Analysis shall be made for residual
elements only when specified in the purchase order. for each 48 h thereafter of normal operation. Any significant
change in the machine, composition, die or continuity of
6.4 If the producer’s or supplier’s method of composition
operation shall be considered as the start of a new lot. Die
control is acceptable, sampling for chemical analysis may be
castings inspected by this method shall be so marked or
waived at the discretion of the purchaser.
handled during the finishing operations as not to lose their
7. Mechanical Property Requirements identity.
7.1 Unless specified in the purchase order, acceptance of die 9.2 Each die casting of a randomly selected sample shall be
castings under this specification shall not depend on mechani- examined to determine conformance to the requirements with
TABLE 1 Chemical Requirements
Composition, % max (unless shown as a range or min)
Major Elements Residual Elements
Copper
Nickel
Alloy
inclu- Alumi- Manga- Anti- Nickel Phos- Alumi- Manga-
UNS
Copper Tin Lead Zinc Iron Silicon Iron Sulphur Silicon
ding num nese mony Cobalt phorous num nese
No.
Cobalt
C85700 58.0– 0.50– 0.8– 32.0– . . . . . 0.7 . 1.0 . . 0.8 . 0.05
A
64.0 1.5 1.5 40.0
A B
C85800 57.0 min 1.5 1.5 31.0– . . . . . 0.50 0.05 0.50 0.05 0.01 0.55 0.25 0.25
41.0
C86500 55.0– 1.0 0.40 36.0– 0.40– . 0.50– 0.10– . . . 1.0 . . . . .
A
60.0
...
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