KT Group Members

Applications and Features

(1)     KFX-719J is suitable for welding 490N/mm² grade steel.

(2)     Less fume, stable arc, good slag removal and good bead appearance.

(3)     Excellent impact toughness at low temperature due to Ni addition.

(4)     Ideal for welding steel structure, shipbuilding, offshore structure and foundation of offshore wind mill.

Welding position

Welding Instruction

Please refer to Appendix D.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Ni

0.04

0.35

1.51

0.015

0.011

0.31

Typical Mechanical Properties of Weld Metal

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

590

540

27

-40

95

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