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This specification establishes the general requirements common to copper alloy castings of UNS Nos. C94700, C95300, C95400, C95410, C95500, C95520, and C96800. Materials shall be sampled and prepared, then tested accordingly to examine their conformance to mechanical (tensile and yield strength, hardness, and elongation), electrical (resistivity and conductivity), dimensional, chemical composition, and grain size requirements. In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
14.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice .
Rounded Limit for Observed or
nearest unit in the last right-hand significance digit used in expressing the limiting value
nearest ksi (5 MPa)
nearest 1 %
Under 0.060 mm
nearest multiple of 0.005 mm
0.060 mm and over
nearest 0.01 mm
1.1 This specification establishes general requirements common to ASTM copper alloy casting specifications , , , , , , , , , , , , , , and . These requirements apply to the casting specifications to the extent referenced therein.
1.1.1 In the event of conflict between this specification and a casting specification, the requirements of the casting specification shall take precedence.
1.2 The chemical composition and other requirements not included in this specification shall be prescribed in the casting product specifications.
1.3 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.
1.4 No precise quantitative relationship can be stated between the properties of the metal in various locations of the same casting or between the properties of castings and those of a test bar casting from the same metal. (See .)
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B22 Specification for Bronze Castings for Bridges and Turntables
B61 Specification for Steam or Valve Bronze Castings
B62 Specification for Composition Bronze or Ounce Metal Castings
B66 Specification for Bronze Castings for Steam Locomotive Wearing Parts
B67 Specification for Car and Tender Journal Bearings, Lined
B148 Specification for Aluminum-Bronze Sand Castings
B176 Specification for Copper-Alloy Die Castings
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings
B271/B271M Specification for Copper-Base Alloy Centrifugal Castings
B369 Specification for Copper-Nickel Alloy Castings
B427 Specification for Gear Bronze Alloy Castings
B505/B505M Specification for Copper Alloy Continuous Castings
B584 Specification for Copper Alloy Sand Castings for General Applications
B763/B763M Specification for Copper Alloy Sand Castings for Valve Applications
B770 Specification for Copper-Beryllium Alloy Sand Castings for General Applications
B806 Specification for Copper Alloy Permanent Mold Castings for General Applications
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E581 Test Methods for Chemical Analysis of Manganese-Copper Alloys
UNSPSC Code 31100000(Castings and casting assemblies)
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ASTM B824-16, Standard Specification for General Requirements for Copper Alloy Castings, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top