AWS Class E630-16
ASME SFA 5.4
WT 630-16 is a precipitation hardening stainless steel that is often used to weld materials of similar composition, such as 17-4 and 17-7. The mechanical properties of WT 630-16 are influenced by the heat treatment. This electrode is modified to stop the formation of ferrite networks in the martensite microstructure. WT 630-16 can be used in the welded condition or can be heat treated to obtain higher strength.
Tensile Strength: 135,000 psi min.
Elongation: 7% min.
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 0.04 0.05 0.15-0.30