KT Group Members

Applications and Features

(1)    Suitable for welding 620N/mm² grade steel.

(2)    0.5% Mo to provide higher strength in both the as welded and stress relieved conditions.

(3)    Ideal for welding high tensile pipe and earthmoving and construction equipment.

Welding position

Welding Instruction

Please refer to Appendix B.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Mo

0.07

0.71

1.68

0.019

0.008

0.43

Typical Mechanical Properties of Weld Metal

Tensile Strength N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

698

621

23

-40

80

Size and Suggested Operating Range (DC+)

Diameter (mm)

0.8

0.9

1.0

1.2

1.4

1.6

Current

(A)

H/HF

50~180

50~200

50~220

80~350

100~470

200~500

V-up

50~100

50~140

50~140

50~140

100~180

-

OH

50~100

50~120

50~120

50~160

-

-

V-down

50~100

50~200

-

-

-

-