金 S 301 Al≥99.5 Good ductility and corrosion resistance. Gas welding and argon arc welding of pure aluminum. 塑性好、耐蝕。純鋁氣焊、氬弧焊用 ER1100
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。鋁合金氣焊、氬弧焊用。不宜用高鎂合金 ER4043
S 321 Mn1.3 Al Rem. Good corrosion resistance, weldability and ductility. Gas welding and argon arc welding of aluminum alloys. 良好的耐蝕性、可焊性及塑性。鋁合金氣焊、氬弧焊用
S 331 Mg5 Mn0.4 Al Rem. Corrosion resistance and high strength. Argon arc welding of aluminum alloys. 耐蝕,強(qiáng)度高。鋁合金氬弧焊用