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, %
Copper Alloy UNS No.	Previously Used Designation	Copper	Tin	Nickel	Lead	Phos- 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