1.1 This specification establishes requirements for copper alloy sand castings for valve applications. Nominal compositions of the alloys defined by this specification are shown in Table 1.
Note 18212;This specification does not cover Copper Alloy UNS Nos. C83600, C92200, C96200, and C96400. These alloys are also used in valve applications. They are covered by the following specifications:
| C83600: B 62 |
| C92200: B 61 |
| C96200: B 369 |
| C96400: B 369 |
1.2 The castings produced under this specification are used in products which may be manufactured in advance and supplied for sale from stock by the manufacturer.
1.3 Units8212;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
TABLE 1 Nominal Compositions
| Classification | Copper Alloy UNS No. | Commercial Designation | Copper | Tin | Lead | Zinc | Nickel | Iron | Alumi- num | Man- ganese | Sili- con | Bismuth | Selenium |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Leaded red brass | C83450 | 88 | 2½ | 2 | 6½ | 1 | . . . | . . . | . . . | . . . | . . . | ||
| C83800 | 83-4-6-7 or commercial red brass | 83 | 4 | 6 | 7 | . . . | . . . | . . . | . . . | . . . | . . . | ||
| Leaded semi-red brass | C84400 | 81-3-7-9 or valve composition | 81 | 3
ASTM B763-08a history
Copyright ©2024 All Rights Reserved |