ASTM B 770 : 2009
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Specification for Copper-Beryllium Alloy Sand Castings for General Applications
Hardcopy , PDF
11-11-2014
English
01-10-2009
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
B 05
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| DocumentType |
Standard
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| Pages |
5
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1 This specification establishes requirements for copper-beryllium alloy sand castings for general applications and nominal compositions alloys defined by this specification are shown in Table 1.
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 only to the test methods described in 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 requirements prior to use.
TABLE 1 Nominal Compositions
| Copper Alloy UNS No. | Previous Designation | Copper | Nickel | Silicon | Beryllium | Cobalt | Chromium | Iron | Zirconium | Tin | Manganese |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C81400 | 70C | 99.1 | ... | ... | 0.06 | ... | 0.8 | ... | ... | ... | ... |
| C82000 | 10C | 97 | ... | ... | 0.5 | 2.5 | ... | ... | ... | ... | ... |
| C82200 | 3C, 14C | 98 | 2.0 | ... | 0.5 | ... | ... | ... | ... | ... | ... |
| C82400A | 165C, 165CTA | 97.8 | ... | ... | 1.7 | 0.5 | ... | ... | ... | ... | ... |
| C82500A | 20C, 20CTA | 97.2 | ... | 0.3 | 2.0 | 0.5 | ... | ... | ... | ... | ... |
| C82510 | 21C | 96.6 | ... | 0.3 | 2.0 | 1.1 | ... | ... | ... | ... | ... |
| C82600A | 245C, 245CTA | 96.8 | ... | 0.3 | 2.4 | 0.5 | ... | ... | ... | ... | ... |
| C82800A | 275C, 275CTA | 96.6 | ... | 0.3 | 2.6 | 0.5 | ... | ... | ... | ... | ... |
| C96700 | 72C | 67.2 | 31.0 | ... | 1.2 | ... | ... | 0.6 | 0.3 | 0.3 | 0.6 |
A When fine-grained castings are specified, 0.02 to 0.12 titanium is added for grain refinement, usually in the remelt ingot. See Specification B30.
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