Copper Nickel Material Grade Composition Chart

Name	ASTM#	Grade	UNS#	Nominal Composition
CU-NI 70/30	15726 * B151	70-30	C71500	Cu-65min Ni-29-33 Mn-1.0max Fe-.4-1 Zn-.5max
CU-NI 90/10	15726 * B151	90-10	C70600	Cu-86.5min Ni-9-11 Mn-1.0max Fe-1-1.8 Zn-.5max

* Material is supplied as MIL-C-24679 for forged shapes.