ER316LSI

Class: ER316LSI
AWS: A5.9

Conforms to Certification: AWS A5.9 | ASME SFA A5.9

Weld Process Used for Tig: (GTAW)

AWS Chemical Composition Requirements
C = 0.03 max
Cr = 18.0 – 20.0
Ni = 11.0 – 14.0
Mo = 2.0 – 3.0
Mn = 1.0 – 2.5
Si = 0.65 – 1.00
P = 0.03 max
S = 0.03 max
Cu = 0.75 max

Available Sizes
.030 x 36
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36
3/16 x 36
5/32 x 36

Application
ER316LSI affords the same characteristics as 316L. The high silicon allows better arc stability along with minimal post-weld grinding. The low carbon in the weld metal gives excellent assurance against intergranular corrosion.

Deposited Chemical Composition % (Typical)
C = 0.02 Mo = 2.50 P = 0.010
Cr = 18.50 Mn = 1.70 S = 0.013
Ni = 11.50 Si = 0.90
Mechanical Properties (R.T.) 
Yield Strength 58,000psi
Tensile Strength 88,000psi
Elongation 37%
Reduction of Area 68%

Deposited All Weld Metal Properties
Data is typical for ER316LSI weld metal deposited by Tig using 100% Argon as the shielding gas.

Recommended Welding Parameters

GTAW “Tig Process”
Wire Diameter Amps DCSP Volts Shielding Gas
.035 60-90 12-15 Argon 100%
.045 80-110 13-16 Argon 100%
1/16 90-130 14-16 Argon 100%
3/32 120-175 15-20 Argon 100%

Note: Parameters for tig welding are dependent upon plate thickness and welding position.
Other shielding Gases may be used for Tig welding. Shielding gases are chosen taking Quality, Cost, and Operability into consideration.