低合金焊丝 品名 类别 AWS型号 典型化学成分，% 特点和用途 C Mn Si Cr Ni Mo 低合金钢焊丝 Techalloy 80S-B2 ER80S-B2 0.09 0.55 0.48 1.35 0.55 1.25Cr-0.5Mo钢焊接 Techalloy 80S-B6 ER80S-B6 0.07 0.44 0.36 5.45 0.55 5CrMo钢焊接 Techalloy 80S-B8 ER80S-B8 0.08 0.45 0.34 9.15 1.05 9CrMo钢焊接 Techalloy 90S-B9 ER90S-B9 0.11 0.60 0.19 9.0 0.5 0.95 P91(T91)钢焊接 Techalloy 110S-1 ER110S-1 0.07 1.55 0.45 0.3 2.30 0.42 σS 680Mpa,Ak 87J(-51℃) Techalloy 120S-1 ER120S-1 0.08 1.5 0.45 0.35 2.55 0.50 σs 730Mpa,Ak 80J(-51℃)