KT Group Members

Applications and Features

( 1 ) Weld metal is ferritic structure with 12%Cr-Nb.

( 2 ) The addition of niobium improves corrosion resistance and promotes a ferritic micro-structure

( 3 ) Suitable for welding automotive exhausts.

( 4 ) Used to weld Type 409 and 409Ti base materials.

Welding Position

Welding Instruction

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

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

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Cr

Nb

0.02

0.45

0.44

0.011

0.008

11.61

0.41

Typical Mechanical Properties of Weld Metal

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

-

-

-

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