Penn Machine

Copper Nickel Material Grade Composition Chart

NAME MIL/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.

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