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ASTM B768 - 11(2016)
Standard Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Strip and Sheet
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Abstract
This specification establishes the requirements for strips and sheets of copper-cobalt-beryllium and copper-nickel-beryllium alloys with Copper Alloy UNS Nos. C17410, C17450, and C17460. The materials for manufacture shall be cast billets or slabs of such purity and soundness as to be suitable for processing by hot-working, cold-working, and annealing to produce a uniform wrought structure in the finished product, which shall be rolled to finished size and heat treated when required to meet temper properties. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (thickness, length, width, straightness, and edge contours), mechanical (tensile and yield strength, Rockwell hardness, and elongation), electrical conductivity, and chemical composition requirements.
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. Scope
1.1 This specification establishes the requirements for copper-cobalt-beryllium and copper-nickel-beryllium strip and sheet of the following alloys:
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| Nominal Composition, % | ||
| Copper Alloy UNS No.2 | Beryllium | Cobalt | Nickel |
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| C17410 | 0.3 | 0.5 | . . . |
| C17450 | 0.3 | . . . | 0.8 |
| C17460 | 0.3 | . . . | 1.2 |
1.2 Units—Values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.
1.3 The following safety hazard caveat pertains only to the test methods described in this specification:
1.3.1 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.
ASTM Standards
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B601 Classification for Temper Designations for Copper and Copper Alloys--Wrought and Cast
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ICS Code
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code
UNSPSC Code 30262300(Copper sheets)
Referencing This Standard
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DOI: 10.1520/B0768-11R16
Citation Format
ASTM B768-11(2016), Standard Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Strip and Sheet, ASTM International, West Conshohocken, PA, 2016, www.astm.org
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