KT Group Members

Applications and Features

( 1 ) KMS-625 is 61%Ni-22%Cr-9%Mo-3.5%Nb alloy.

( 2 ) Excellent corrosion resistance and high strength over broad temperature range. The highest service temperature is up to 540℃.

( 3 ) Suitable for welding 9%Ni steel, Inconel 601, 625, 718, Alloy 20, 45 and ASTM B443, B444, B446Ni-Cr-Mo alloy.

Welding Position

Welding Instruction

( 1 ) Clean surface of base metal before welding.

( 2 ) Heat input should be controlled as low as possible.

( 3 ) For other instructions, please refer to Appendix B.

Typical Chemical Composition of Wire (wt%)

C

Si

Mn

P

S

Cr

Mo

Fe

Nb

Ni

0.01

0.07

0.06

0.006

0.001

22.15

8.71

0.37

3.71

64.30

Typical Mechanical Properties of Weld Metal    

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

Charpy V-Notch

^oC

J

783

492

40

-196

122

Size and Suggested Operating Range (DC+)

Diameter (mm)

0.8

0.9

1.2

1.6

Current (A)

140~180

160~200

190~230

200~250

Voltage (V)

24~27

25~28

26~30

29~33