1.1This specification establishes requirements for copper alloy² permanent mold castings for general applications. Nominal compositions of the alloys under this specification are shown in Table 1.

TABLE 1 Nominal Composition

Classification	Copper Alloy UNS No.	Nominal Composition
Classification	Copper Alloy UNS No.	Copper	Aluminum	Iron	Manganese	Nickel (incl Cobalt)	Silicon	Lead	Zinc	Tin
Yellow brass	C85470^A	62.5	0.5	. . .	. . .	. . .	. . .	. . .	34.3	2.5
Silicon brass	C87500 C87800	82.0 82.0	... ...	... ...	... ...	... ...	4.0 4.0	... ...	14.0 14.0	... ...
	C87850^B	76.0	. . .	. . .	. . .	. . .	3.0	. . .	20.9	. . .
Lead-free yellow brass^C	C89540	61.0	0.40	0.30	...	0.5	...	...	36.0	0.8
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	... ...	... ...	... ...	... ...

^A Phosphorus 0.13.

^B Phosphorus 0.12.

^C Bismuth 0.9; selenium 0.03.

1.2The 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.