Class: ER308LSI
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.
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Deposited Chemical Composition % (Typical)
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C = 0.016
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Si = 0.85
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Mn = 1.65
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P = 0.016
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S = 0.008
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Cr = 20.65
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Ni = 10.0
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Mechanical Properties (R.T.)
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Yield Strength
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59,000 psi
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Tensile Strength
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87,000 psi
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Elongation
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39%
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Reduction of Area
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60%
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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.
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Recommended Welding Parameters
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GMAW “Mig Process”
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Reversed Polarity
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Wire Diameter
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Wire Feed
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Amps
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Volts
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Shielding Gas
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Gas CFH
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Short Arc Welding
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.030
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13-26
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40-120
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16-20
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Argon+2% O2
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25
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.035
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13-26
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60-140
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16-22
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Argon+2% O2
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25
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Spray Are Welding
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.035
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20-39
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140-220
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24-29
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Argon+2% O2
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38
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.045
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16-30
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160-260
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25-30
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Argon+2% O2
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38
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