KT Group Members

Applications and Features

(1)    Suitable for welding 780N/mm² grade steel.

(2)    Good weldability, good mechanical properties and crack resistance.

(3)    Applicable for pressure vessels/pipe, bridges, shipbuilding and offshore structures.

Welding position

Welding Instruction

Please refer to Appendix A.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Cr

Ni

Mo

0.07

0.23

1.14

0.012

0.008

0.25

2.16

0.43

Typical Mechanical Properties of Weld Metal

Tensile Strength N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

800

690

23

0

145

-20

105

Size and Suggested Operating Range (AC or DC+)

Diameter (mm)

3.2

4.0

5.0

6.0

Current

(A)

F/H-Fillet

90~130

130~180

180~240

230~300

V-up/OH

80~120

110~160

150~200

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