美國漢默Weld Mold 4940鋁青銅焊條

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Weld Mold 4940

Weld Mold 4940 is a copper, nickel, chromium, aluminum bronze bare wire. Weld Mold 4940 has excellent thermal conductivity wear resistance and corrosion resistance.

A high performance, high thermal conductivity copper alloy commonly utilized by the injection and blow molding industries as well as others in the molding industry as an alternative product for welding beryllium copper. Also used for welding Ampco? 940 molds.

For GTAW direct current straight polarity is preferred but alternating current with high frequency can be used. 100 helium is recommended for most applications. 100 argon or a mixture of argon and helium can be used. 40 to 55 CFH is desirable.

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