美国泰克罗伊ER90S-B9焊丝ER90S-B90.110.600.199.00.50.95P91(T91)钢焊接Techalloy110S-1ER110S-10.071.550.450.32.300.42σS680Mpa,Ak87J(-51℃)Techalloy120S-1ER120S-10.081.50.450.352.550.50σs730Mpa,Ak80J(-51℃))