Silicon bronze welding wireSize: S 201composition: Sn1 Si0.3Mn0.3Cu Rem.Description: Good mechanical properties and crack resistance. Gas welding and argon arc welding of red copper.Equivalent to AWS : ERCu Size: S 211Composition : Si3 Mn1 Cu Rem.Description: Good mechanical properties. Argon arc welding of copper alloys and MIG brazing of steel.Equivalent to AWS: ERCuSi-A