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ER308LSI

Class: ER308L

AWS: A5.9

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

Weld Process Used for Mig (GMAW) and Submerged Arc (SAW)

AWS Chemical Composition
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 – Diameter X Spool Sizes
.025 x 2#, 10#, 25#
.030 x 2#, 10#, 25#, 30#, 33#
.035 x 2#, 10#, 25#, 30#, 33#
.045 x 2#, 10#, 25#, 30#, 33#
1/16 x 10#, 25#, 30#, 33#

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 Mig using Argon + 2% oxygen as the shielding gas. Data on sub-arc is not presented, as sub-arc is dependent on the type of flux used.

Recommended Welding Parameters
GMAW “Mig Process” Reversed Polarity
Wire Diameter Wire Feed Amps Volts Shielding Gas Gas CFH
Short Arc Welding .030 13-26 40-120 16-20 Argon+2% O2 25
.035 13-26 60-140 16-22 Argon+2% O2 25
Spray Are Welding .035 20-39 140-220 24-29 Argon+2% O2 38
.045 16-30 160-260 25-30 Argon+2% O2 38
1/16 10-16 230-350 27-31 Argon+2% O2 38

Other shielding Gases may be used for Mig welding. Shielding gases are chosen taking Quality, Cost, and Operability into consideration

Recommended Welding Parameters
SAW “Submerged Arc Welding Process” Reversed Polarity Suggested
Wire Diameter Amps Volts
3/32 250-450 28-32
1/8 300-500 29-34
5/32 400-600 30-35
3/16 500-700 30-35

Both Agglomerated and fused fluxes can be used for submerged arc welding.
Note: The chemical composition of the flux mainly affects the chemistry of the weld metal and consequently its corrosion resistance and Mechanical properties.