| Aluminum alloys 铝 合 金 | S 301 | Al≥99.5 | Good ductility and corrosion resistance. Gas welding and argon arc welding of pure aluminum. 塑性好、耐蚀。纯铝气焊、氩弧焊用 | 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。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 | ER5183 |