How to Weld AISI 4140 Steel: Complete Guide

AISI 4140 Steel Welding can be carried out using SMAW (Stick Welding), TIG, MIG and FCAW process. Stick welding of AISI 4140 is carried out using E8018-B2 or E7018 electrode while TIG or MIG welding is carried out using ER80S-B2 or ER70S-2 welding wire. Check this article for detailed guidelines