ASTM B806-08a - 1.10.2008
 
1. Scope

1.1 This specification establishes requirements for copper alloy permanent mold castings for general applications. Nominal compositions of the alloys under this specification are shown in Table 1.

1.2 The 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.

TABLE 1 Nominal Composition

ClassificationCopper
Alloy
UNS No.		Nominal Composition
CopperAluminumIronManganeseNickel (incl Cobalt)SiliconLeadZincTin

Aluminum bronze

C95300
C95400
C95410

89.0
85.0
84.0

10.0
11.0
10.0

1.0
4.0
4.0

...
...
...

...
...
2.0

...
...
...

...
...
...

...
...
...

...
...
...

Nickel aluminum bronze

C95500
C95800

81.0
81.3

11.0
9.0

4.0
4.0

...
1.2

4.0
4.5

...
...

...
...

...
...

...
...

Silicon brass

C87500
C87800

82.0
82.0

...
...

...
...

...
...

...
...

4.0
4.0

...
...

14.0
14.0

...
...

C87850A

76.0

. . .

. . .

. . .

. . .

3.0

. . .

20.9

. . .

Lead-free yellow brassB

C89540

61.0

0.40

0.30

...

0.5

...

...

36.0

0.8

A Phosphorus 0.12.

B Bismuth 0.9; selenium 0.03.

 
2. Referenced Documents

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

E527-23

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