What welding rod should be used for welding between No. 20 and No. 45 steel?
J427When welding, pay attention to the small current at the bottom, and the weldability of No. 45 steel is poor
J427When welding, pay attention to the small current at the bottom, and the weldability of No. 45 steel is poor
No. 20 steel and No. 45 steel belong to dissimilar metal welding. Recommended electrode: J506 or J507.Steel No. 20 belongs to low carbon structural steel. It can be made of low alloy structural steel electrode with J422, J426, J427 and other grade strength.No. 45 belongs to medium carbon steel. The strength level of the matched electrode is J555 J556.Can use J50 series grade intensity of basic electrode welding rod, the electrode is lower than 45 steel J55 welding rod one level, higher than 20 steel J42 welding rod one level.Recommendation: J506 (E5016) low hydrogen potassium alloy structural steel welding rod;Or: J507 (E5015) low hydrogen sodium type low alloy structural steel welding rod
