Linkweld Steel Tig Rod LKT-56 ER70S-6

Description

Characteristics:

LKT-56 is designed for welding of mild steel and 490N/mm² grade steel. Commonly used is butt or

fillet welding. As an all-position welding rod for TIG welding, it is especially suitable for the root pass of pipe

welding.

Applications:

It is suitable for welding of high pressure piping for shipbuilding, petro chemistry and nuclear power plant,

etc.

Notes on Usage:

1.100% Argon shielding gas with 99.997% high purity is recommended and the flow rate must be

properly controlled. The flow rate is recommended 7-12l/min when arc current is 100-200Amp

and it goes up to 12-15l/min when arc current rises to 200-300Amp.

2.Select right gas cup size and employ proper stick out of tungsten electrode.

3.To obtain a very clean weld pool, keep the weld plate free from dirt, rust, paint and any other

atmospheric contamination.

4.Trailer Shield is required to ensure the weld pool completely s hielded until solidification is

complete and no porosity problem.

Classification:

AWS A5.14 ERNiCr-3
JIS Z3334 YNiCr-3

Typical chemical composition of weld metal (wt%)

C	Mn	Si	P	S	Ni	Cr	Mo	V	Cu
0.08	1.53	0.80	0.015	0.011	0.008	0.022	0.021	0.006	0.044

Typical mechanical properties of weld metal

YP N/mm²	TS N/mm²	EL %	IV -30°C J
460	550	35	196

Sizes available