KT Group Members

Applications and Features

(1)     KFX-715 is suitable for welding 490N/mm² grade steel.

(2)     Low hydrogen, excellent crack resistance and impact toughness at low temperature.

(3)     Ideal for welding ship-building, steel structure and machinery.

Welding position

Welding Instruction

Please refer to Appendix D.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

0.05

0.37

1.61

0.022

0.010

Typical Mechanical Properties of Weld Metal

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

559

506

28

-40

81

Size and Suggested Operating Range (DC+)

Diameter (mm)

1.2

1.6

F/HF

130~300A/24~36V

160~340A/24~38V

H

130~280A/22~33V

160~280A/24~34V

V-up/OH

130~220A/22~28V

160~280A/22~28V

V-down

230~280A/28~33V

250~320A/28~32V