ASTM B427-09 - 1.10.2009
 
1. Scope

1.1 This specification establishes requirements for alloys whose copper alloy numbers and nominal compositions are shown in Table 1. The castings may be furnished as one of three types: static chill, centrifugal chill, or sand cast.

1.2 The values stated in inch-pound units are to be regarded as the standard. SI values given in parentheses are for information purposes only.

TABLE 1 Nominal Composition

Copper
Alloy
UNS No.		Previously
Used
Designation		Composition, %
CopperTinNickelLeadPhos-
phorus

C90800

A

87.8

12.0

...

0

0.2

C91700

B

86.3

12.0

1.5

0

0.2

C90700

...

87.8

11.0

...

0

0.2

C91600

C

88.0

10.3

1.5

0

0.2

C92900

D

83.5

10.0

3.5

2.8

0.2

 
2. Referenced Documents

E8/E8M-25

Standard Test Methods for Tension Testing of Metallic Materials

B950-26

Standard Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys

B846-24

Standard Terminology for Copper and Copper Alloys

B824-17(2025)

Standard Specification for General Requirements for Copper Alloy Castings

B208-14(2021)

Standard Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings

E10-23

Standard Test Method for Brinell Hardness of Metallic Materials

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)