Class: ER308LSI

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 = 19.5 – 22.0
Ni = 9.0 – 11.0
Mo = 0.75 max
Mn = 1.0 – 2.5
Si = 0.65 – 1.0
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
WW308LSI is suitable for joining stainless steels of the 304 type and 308 types. Welding speed is higher that 308 or 308L due to improved weldability of the weld metal.

Deposited Chemical Composition % (Typical)
C = 0.016	Si = 0.85	Mn = 1.65
P = 0.016	S = 0.008	Cr = 20.65
Ni = 10.0

 

Mechanical Properties (R.T.)
Yield Strength	59,000 psi
Tensile Strength	87,000 psi
Elongation	39%
Reduction of Area	60%

Deposited All Weld Metal Properties
Data is typical for ER308LSI 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.