ER321 H0Cr20Ni10TiC≤0.06 Cr18.0~22.0Si≤0.6 Ni 9.0~10.5Mn1.0~2.5 Ti9×C%~1.0P≤0.03 S≤0.02For the same type of stainless steel welding. 1.6 1.2 1.0