1.1This specification covers the requirements for specified copper-zinc-tin alloys and copper-zinc-tin-iron-nickel alloys plate, sheet, strip, and rolled bar. The alloys and nominal compositions are as follows:

Copper Alloy UNS No.	Copper, %	Tin, %	Zinc, %	Phos., %%	Iron, %	Nickel, %

C40500	95	1	4
C40810	95.5	2.0	2.2	0.03	0.1	0.15
C40850	95.5	3.0	1.3	0.1	0.1	0.1
C40860	94.8	2.0	3	0.03	0.03	0.1
C41100	91	0.5	8.5
C41300	91	1	8
C41500	91	2	7
C42200	87	1	12
C42500	88	2	10
C42520	89.8	2.0	8	0.1	0.1	0.1
C43000	85	2	13
C43400	85	0.7	14.3

1.2Units-The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.