S 311

Si5 Al Rem.

Corrosion resistance, wide range of usage. Gas welding and argon arc welding of aluminum alloys other than high magnesium alloys.
抗裂性好，通用性大。铝合金气焊、氩弧焊用。不宜用高镁合金

ER4043

S 321

Mn1.3 Al Rem.

Good corrosion resistance, weldability and ductility. Gas welding and argon arc welding of aluminum alloys.
良好的耐蚀性、可焊性及塑性。铝合金气焊、氩弧焊用

S 331

Mg5 Mn0.4
Al Rem.

Corrosion resistance and high strength. Argon arc welding of aluminum alloys.
耐蚀，强度高。铝合金氩弧焊用