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ER630

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 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.



AWS Class: ER630

Certification:  AWS A5.9/ A5.9M:2006

Alloy:  ER630

AWS/ASME SFA A5.9

 

Welding Position:   

F, V, OH, H        

Current:

DCEP

 

Typical Properties (as welded)

Yield, kpsi:

135

Tensile Strength, kpsi:

150

Elongation%, min:

10


Typical Wire Chemistry as per AWS A5.9 (single values are maximum)

C

Cr

Ni

Mo

Mn

Si

P

S

Cu

Element

Amount

0.05

16.00-16.75

4.5-5.0

0.75

0.25-0.75

0.75

0.03

0.03

3.25-4.00

Nb

0.15-0.30

 

 

Typical Welding Parameters

Diameter

Process

Volt

 

Amps

GAS

in

(mm)

.035

 (0.9)

GMAW

26-29

160-210

98% Argon/2% Oxygen or 97% Argon/3% Oxygen

.045

 (1.14)

GMAW

28-32

180-250

98% Argon/2% Oxygen or 97% Argon/3% Oxygen

1/16”

(1.6)

GMAW

29-33

200-280

98% Argon/2% Oxygen  or 97% Argon/3% Oxygen

Diameter

Process

Volt

 

Amps

GAS

in

(mm)

 1/16”

 (1.6)

GTAW

14-18

90-130

100% Argon

 3/32”

 (2.4)

GTAW

15-20

120-175

100% Argon

 1/8”

 (3.2)

GTAW

15-20

150-220

100% Argon