KT Group Members

Applications and Features

( 1 ) KFT-X308L produces slag to protect the reverse side of the root pass from oxidation by the atmosphere and saves the cost for back shielding gases and gas purging downtime including the setting time for gas purging jigs.

( 2 ) Suitable for welding 18%Cr-8%Ni steel ( AISI 304,304L).

Welding Position

Welding Instruction

( 1 ) Formation of key-hole during welding is very important in order to supply slag onto reverse side bead.

( 2 ) The melting rate of flux cored wire is higher than that of solid wire due to flux addition. The speed of wire feeding must be higher.

( 3 ) Only for root pass in single-side welding, not for cover pass.

Typical Chemical Composition of Weld Metal (wt%)

C

Si

Mn

P

S

Cr

Ni

0.02

0.78

1.65

0.022

0.009

18.65

10.21

Typical Mechanical Properties of Weld Metal

Tensile Strength

N/mm²

Yield Strength

N/mm²

Elongation

%

623

444

42

Size and Polarity (DC-)

Diameter (mm)

2.2

Length (mm)

1000