KT Group Members

Applications and Features

(1)    Suitable for vertical downward welding of 490N/mm² grade steel.

(2)   
Easy control of weld puddle, low spatters, good slag removal and smooth bead, good penetration and X-ray soundness.

(3)    Good mechanical properties of weld metal, crack resistance and
high deposition rate.

(4)    Applicable for ship building, bridge and steel structures.

Welding position

Welding Instruction

Please refer to Appendix A.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

0.08

0.50

1.01

0.012

0.008

Typical Mechanical Properties of Weld Metal

Tensile Strength N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

℃

J

560

485

31

0

208

-29

142

Size and Suggested Operating Range (AC or DC+)

Diameter (mm)

3.2

4.0

5.0

6.0

Current

(A)

V-down

110~160

140~210

220~270

300~350