ER320LR

ER320LR has a composition similar to type
320, except that carbon, silicon, phosphorus,
and sulfur levels are kept at lower levels as
well as the columbium and manganese being
specified at a narrower range. The low
melting residuals are limited in this alloy to
reduce the possibility of microfissuring. It is
for this reason that this alloy is often used
for welding type 320 stainless steels.

AWS Specification
AWS A5.9/A5.9M:2006
AWS Classification ER320LR

Welding Current

DCEP

Typical Wire Chemistry
C 0.025
Cr 19.0 - 21.0
Ni 32.0 - 36.0
Mo 2.0 - 3.0
Mn 1.5 - 2.0
Si 0.15
P 0.015
S 0.02
Cu 3.0 - 4.0
Nb 8xCmin/0.40max

Typical Mechanical Properties
(As Welded)
Yield Strength, ksi 57
Tensile Strength, ksi 86
Elongation%, min 35

Welding Positions

F,V,OH,H

Available Diameters MIG with
Operating Range in Amps
.023" 35 - 70
.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