KT Group Members

Welding Instruction

(1) Use Ar blend with 1~2%O₂ for high current, spray transfer welding.

(2) Use Ar blend with 1~2%CO₂ for low current, short-circuit transfer welding.

Typical Chemical Composition of Weld Metal (wt %) (Shielding Gas : Ar+2%O₂)

C

Si

Mn

P

S

Cr

Ni

0.06

0.40

1.36

0.02

0.02

19.56

10.23

Typical Mechanical Properties of Weld Metal (Shielding Gas : Ar+2%O₂)

Tensile Strength                         Yield Strength

 N/mm²（kgf/mm²）                     N/mm²（kgf/mm²）

Elongation 

%

560                                  370      

45

Size and Suggested Operating Range (DC+)

Diameter

        (mm)  

Operating range

0.8

0.9

1.0

1.2

1.4

1.6

Ar+1~2%CO₂

Amp

—

60~140

80~160

100~210

—

—

Volt

—

15~21

16~22

17~22

—

—

Ar+1~2%O₂

Amp

—

170~260

180~280

200~300

210~320

220~330

Volt

—

24~30

24~30

24~30

24~32

24~32