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This specification establishes the requirements for copper-beryllium alloy forgings and extrusions. The following alloys are specified: UNS No. C17500 and C17510. The material of manufacture should be a cast billet conforming to the chemical composition requirements for the alloy specified. The product shall be manufactured by hot working or extrusion, solution heat-treating, precipitation hardening, and straightening. The material shall conform to the chemical composition for the alloy specified. The material shall conform to the electrical conductivity requirements specified. Hardness test and tensile test shall be made to conform to the requirements specified.
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.
1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions. The following alloys are specified:
Nominal Composition, %
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.
1.3 The following safety hazard caveat pertains to Sections 10 and 11 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings
B441 Specification for Copper-Cobalt-Beryllium, Copper-Nickel-Beryllium, and Copper-Nickel-Lead-Beryllium Rod and Bar (UNS Nos. C17500, C17510, and C17465)
B601 Classification for Temper Designations for Copper and Copper Alloys--Wrought and Cast
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
E18 Test Methods for Rockwell Hardness of Metallic Materials
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E1004 Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method
ICS Number Code 77.120.30 (Copper and copper alloys)
UNSPSC Code 31133100(Copper forgings); 31111605(Copper impact extrusions)
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ASTM B870-08(2014), Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions Alloys (UNS Nos. C17500 and C17510), ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top