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ASTM B770-10

ASTM B770-10

Standard Specification for Copper-Beryllium Alloy Sand Castings for General Applications

2015-05-15 /Historical
Superseeded by:

This specification establishes requirements for copper-beryllium alloy sand castings for general applications and covers Copper Alloy UNS Nos. C81400, C82000, C82200, C82400, C82500, C82510, C82600, C82800, and C96700. The product shall be manufactured by casting and thermal treatment. Castings shall conform to the chemical composition requirements prescribed for copper, nickel, silicon, beryllium, cobalt, chromium, iron, zirconium, tin, and manganese. The standard temper designations include TF00 (cast, solution and precipitation heat treated) and M01 (as sand cast). Requirements for precipitation and solution heat-treatments of castings for the purpose of determining conformance to the specified mechanical properties including tensile strength, yield strength, and elongation are detailed. Special combinations of properties such as increased ductility, electrical conductivity, dimensional accuracy, and endurance life may be obtained by special precipitation heat-treatments. Tension tests shall also meet the mechanical property requirements.


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 UnitsThe 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.

copper alloy castings; copper-base alloy castings; copper beryllium castings; Copper alloy castings--specifications; Copper-beryllium alloys--specifications; UNS C81400 (cast chromium copper); UNS C82000 (cast beryllium copper); UNS C82200 (cast beryllium copper); UNS C82400 (cast beryllium copper); UNS C82500 (cast beryllium copper); UNS C82510 (copper-beryllium alloy); UNS C82600 (cast beryllium copper); UNS C82800 (cast beryllium copper); UNS C96700 (cast copper nickel)
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