... conductivity and hardness by changing the heat treatment conditions CuCo1Ni1Be--CW103C (DIN 2.1285) Cobalt Nickel Beryllium Copper Alloy contains approximately ... J461,463; RWMA Class 3European Standards: CuCo1Ni1Be, DIN 2.1285; CW103C to ENNote: ASTM: American Society for Testing and Materials SAE ...