Beryllium-copper master alloy

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Copper Beryllium Master Alloy:
1. CuBe3.3:
Spec: Be: 3.0-4.0%, Fe: <0.12%, Al: <0.15%, Si: <0.15%, Pb<0.005%, Cu: Balance
2. CuBe4:
Spec: Be: 3.8-4.3%, Fe: <0.12%, Al: <0.15%, Si: <0.15%, Pb<0.005%, Cu: Balance