ER630
ER630 is a precipitation hardening grade of stainless steel used for joining materials of similar chemical composition. Mechanical properties of this alloy are greatly influenced by the heat treatment.
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AWS Class: ER630
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Certification: AWS A5.9/ A5.9M:2006
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Alloy: ER630
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AWS/ASME SFA A5.9
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Welding Position:
F, V, OH, H
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Current:
DCEP
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Typical Properties (as welded)
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Yield, kpsi:
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135
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Tensile Strength, kpsi:
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150
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Elongation%, min:
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10
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Typical Wire Chemistry as per AWS A5.9 (single values are maximum)
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C
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Cr
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Ni
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Mo
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Mn
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Si
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P
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S
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Cu
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Element
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Amount
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0.05
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16.00-16.75
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4.5-5.0
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0.75
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0.25-0.75
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0.75
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0.03
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0.03
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3.25-4.00
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Nb
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0.15-0.30
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Typical Welding Parameters
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Diameter
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Process
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Volt
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Amps
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GAS
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in
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(mm)
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.035
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(0.9)
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GMAW
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26-29
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160-210
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98% Argon/2% Oxygen or 97% Argon/3% Oxygen
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.045
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(1.14)
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GMAW
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28-32
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180-250
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98% Argon/2% Oxygen or 97% Argon/3% Oxygen
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1/16”
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(1.6)
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GMAW
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29-33
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200-280
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98% Argon/2% Oxygen or 97% Argon/3% Oxygen
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Diameter
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Process
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Volt
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Amps
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GAS
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in
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(mm)
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1/16”
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(1.6)
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GTAW
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14-18
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90-130
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100% Argon
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3/32”
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(2.4)
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GTAW
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15-20
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120-175
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100% Argon
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1/8”
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(3.2)
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GTAW
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15-20
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150-220
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100% Argon
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