KT Group Members

Applications and Features

( 1 ) Weld metal is austenitic structure with 23%Cr-12%Ni-2%Mo.

( 2 ) Similar to 309 with the exception for the addition of 2.0 - 3.0% molybdenum to increase its pitting corrosion resistance in halide-containing environments.

( 3 ) Used to achieve a single-layer overlay with a chemical composition similar to that of a 316L stainless steel.

Welding Position

Welding Instruction

( 1 ) Use Ar+1~2%O₂ for spray transfer and Ar+1~2%CO₂ for short-circuit transfer.

( 2 ) For welding dissimilar alloy, please refer to Appendix I.

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

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Cr

Ni

Mo

0.03

0.36

1.88

0.013

0.009

24.41

13.32

2.44

Typical Mechanical Properties of Weld Metal

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

620

440

39

Size and Suggested Operating Range (DC+)

Diameter (mm)

0.8

0.9

1.0

1.2

1.4

1.6

Ar+1~2%CO₂

Current (A)

40~120

60~140

80~160

100~210

-

-

Voltage (V)

15~20

15~21

16~22

17~22

-

-

Ar+1~2%O₂

Current (A)

160~210

170~260

180~280

200~300

210~320

220~330

Voltage (V)

24~28

24~30

24~30

24~30

24~32

24~32