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Phos Bronze A Alloy

AWS A5.7 Class ERCuSn-A
ASME SFA5.7 ERCuSn-A

Washington Alloy Phos-Bronze A filler metal is used for MIG and TIG welding of tin-bronze base metals such as 509 to 519 series, for brass and for overlay welding of steel.

Phos-Bronze A contains approximately 5% tin and up to 0.35% phosphorus. The tin content increases the wear resistance of the weld deposit while the phosphorus acts as a deoxidizer. Preheating is recommended.

TYPICAL WELD METAL CHEMISTRY (%) 

-

PHOS-BRONZE A

Cu

Remainder


0.80 max


0.30 max


0.05 max


0.05 max


0.10 max


0.20 max


Balance


0.15 total max


Supporting Documentation: