ASTM B740-09 - 15.8.2009
 
1. Scope

1.1 This specification establishes requirements for copper-nickel-tin alloy strip in the following alloys:

Copper Alloy UNS No.

Nominal Composition Weight %

Copper

Nickel

Tin

C72700

85

9

6

C72900

77

15

8

C72650

87.5

7.5

5

1.2 Units—The values stated in inch-pound units and the values stated in SI units in Table 5 are to be regarded as standard, except for grain size which is stated in metric units only. The values given in parentheses are mathematical conversions to SI units and are provided for information only and are not considered standard.

1.3 The following safety hazard caveat pertains only to the test method(s) 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

B846-24

Standard Terminology for Copper and Copper Alloys

E3-26

Standard Guide for Preparation of Metallographic Specimens

E8/E8M-25

Standard Test Methods for Tension Testing of Metallic Materials

E75-76(1996)

Standard Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys

E290-22

Standard Test Methods for Bend Testing of Material for Ductility

E478-24

Standard Test Methods for Chemical Analysis of Copper Alloys

B820-26

Standard Test Method for Bend Test for Determining the Formability of Copper and Copper Alloy Strip

B248-22

Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar

B598-14

Standard Practice for Determining Offset Yield Strength in Tension for Copper Alloys

B601-24

Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast