It is used for welding a
range of copper base alloys to themselves and to CMn
steels or cast irons, and also for the repair and joining
It is also suitable, if low dilution is achieved, for weld
surfacing to give a bearing surface and/or corrosion
resistant overlay on steel components, shafts etc.
Stainless steels should be avoided because chromium
pick-up causes embrittlement. The tin bronze weld metal tends to be sluggish
because of its wide melting range. Preheating to
about 200°C can help improve fluidity when welding
thick sections. To avoid hot cracking it is desirable to
keep the interpass temperature below 200°C. It can also be used to weld copper material if the presence of tin in the weld metal is not objectionable, for example copper and tin bronzes, especially used for joining of copper-zinc alloys and steels.
For multi-layer welding on steel, pulsed arc welding is recommended-also appropriate for oven soldering.
Tin bronze alloy wire for welding similar tin bronze
(phosphor bronze) alloys.
A multi phase copper base structure with complex
Materials to be welded
Tin bronze up to 10%Sn+0.5%P. Cu + 20-25%Sn. Cu + 40%Zn, manganese bronze.