ASTM B870-02

ASTM B870-02 - 10.10.2002

1. Scope

1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions. The following alloys are specified:
Copper Alloy UNS No. Nominal Composition, %
Beryllium Cobalt Nickel
C17500 0.59 2.6
C17510 0.40 1.8

1.2 Units—The values stated in inch-pound units are 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 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

B441-22	Standard Specification for Copper-Cobalt-Beryllium Alloy, Copper-Nickel-Beryllium Alloy, Copper-Nickel-Lead-Beryllium Alloy, and Copper-Nickel-Cobalt Alloy Rod and Bar
B249/B249M-23	Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings
B194-22	Standard Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B601-24	Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846-24	Standard Terminology for Copper and Copper Alloys
B950-26	Standard Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys
E8/E8M-25	Standard Test Methods for Tension Testing of Metallic Materials
E18-25	Standard Test Methods for Rockwell Hardness of Metallic Materials
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E1004-23	Standard Test Method for Determining Electrical Conductivity Using the Electromagnetic (Eddy Current) Method