AWS Class ER630
ASME SFA 5.9
ER630 is designed primarily for welding precipitation hardening stainless steels; it is modified to prevent the formation of ferrite networks in the martensitic microstructure which have deleterious effect on mechanical properties. ER630 is a precipitation hardening stainless steel that is used in welding high strength stainless steels of similar composition. ER630 properties listed above are greatly influenced by heat treatment.
Available in multiple sizes and diameters
Chemical Composition (Wt%):
Si Mn Cu Mo S Ni Cr P C Nb+Ta
0.75 0.25-0.75 3.25-4.0 0.75 0.03 4.5-5.0 16.0-16.75 0.03 0.05 0.15-0.30