ASTM B0870-21
Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos. C17500, C17510, and C17540)
| Standard number: | ASTM B0870-21 |
| Released: | 01.10.2021 |
| Status: | Active |
| Pages: | 3 |
| Section: | 02.01 |
| Keywords: | copper beryllium extrusions; copper beryllium forgings; UNS Alloy C17500; UNS Alloy C17510; UNS Alloy C17540; |
| ASTM number: | ASTM B870 |
| Supersedes: | B0870-08R14 |
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.
1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions. The following alloys are specified:
| Copper Alloy | Nominal Composition, % | ||
| Beryllium | Cobalt | Nickel | |
| C17500 | 0.50 | 2.6 | ... |
| C17510 | 0.40 | ... | 1.8 |
| C17540 | 0.50 | 1.5 | 1.5 |
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.