+ What is the different between AWS A5.18 ER70S-G and ER70S-6? BCK, May 24, 2021May 24, 2021, Blog, A5.18 ER70S, Welding electrode, 0 ER70S-6/ER70S-G wire conforms to the AWS A5.18 specification. The designations are as follows: ER: indicates filler metal may be used...