ER630

ER630 is a precipitation hardening grade of
stainless steel used for joining materials of
similar chemical composition. Mechanical
properties of this alloy are greatly influenced
by the heat treatment.

AWS Specification
AWS A5.9/A5.9M:2006
AWS Classification ER630

Welding Current

DCEP

Typical Wire Chemistry
C 0.05
Cr 16.00 - 16.75
Ni 4.5 - 5.0
Mo 0.75
Mn 0.25 - 0.75
Si 0.75
P 0.03
S 0.03
Cu 3.25 - 4.00
Nb 0.15 - 0.30

Typical Mechanical Properties
(As Welded post heat treatment
between 1875º and 1625ºF for
one hour, followed by precipitation
hardening between 1135ºF and
1165ºF for four hours)
Yield Strength, ksi 135
Tensile Strength, ksi 150
Elongation%, min 10

Welding Positions

F,V,OH,H

Available Diameters MIG with
Operating Range in Amps
.030" 50 - 100
.035" 160 - 210
.045" 180 - 250

Available Diameters TIG with
Operating Range in Amps
.035" 60 - 90
.045" 80 - 110
1/16" 90 - 130
3/32" 120 - 175
1/8" 150 - 220
5/32" 170 - 350