保护气体为M21（氩气+15至25%CO2）
分类标准及标号
产品牌号 类别 AWS A… EN…
Union I CrMo GTAW 5.28； ER80S-G 12070； W CrMo 1 Si
Union I CrMo* GMAW 5.28； ER80S-G 12070: G CrMo 1 Si
Thyssen MV CrMo MCAW 5.28； E80C-B2 H4 12071: T CrMo1 MM2 H5
Union I CrMo 910 GTAW 5.28； ER90S-G 12070: W CrMo 2 Si
Union I CrMo 910* GMAW 5.28； ER90S-G 12070: G CrMo 2 Si
Union I Cr 2 WV GTAW 5.28； ER90S-G 12070: W ZCrWV2
Union I Cr 2 WV* GMAW 5.28； ER90S-G 12070: G ZCrWV2
Union I CrMoVTi B GMAW 5.28； ER90S-G 12070: W ZCrMoV2
Union I CrMoVTi B* GMAW 5.28； ER90S-G 12070: G ZCrMoV2
Union I CrMo 5 GTAW 5.28； ER80S-B6 12070: G CrMo 5 Si
Thermanit MTS 3 GTAW 5.28； ER90S-B9 12070: W CrMo 9 1
Thermanit MTS 3* GMAW 5.28； ER90S-B9 12070: G CrMo 9 1