309L Stainless Steel Flux Cored Wire

Product Detail

Standards: GB/T 17853 E308LT1-1  NB/T 47018  E309LT1-1   AWS A5.22 E309LT1-1

Application   

Applying for dissimilar steel welding of stainless steel, carbon steel or low alloy steel;

Characteristic

The carbon in the deposit metalof this wire is not exceeding 0.04%. Besides the excellent intercrystalline corrosion resistanc and low crack sensitivity. it also has the features of arc stability, deslagging easily, low welding spatter and fine welding appearance. The mechanical properties of deposited metal is very good in as-welded. Suitable for full position welding.

Chemical analysis of deposit (%)(shielding gas:CO2).

Item	C	Mn	Si	S	P	Cr	Ni	Mo	Cu
Standards value	=0.04	0.5-2.5	=1.0	=0.03	=0.04	22.0-25.0	12.0-14.0	=0.5	=0.5
Test value	0.03	1.49	0.62	0.005	0.028	22.7	12.87	0.06	0.15




Mechanical property of deposited metal


Experiment Items	Yield strength Rel/p0.2 MPa	Tensile Strength Rm/MPa	Elongation A/%	Charpy-V impact KV2(J) -40?
Standards value	=520	=345	=25	=35
Test values of sample	548	459	32	54.7
Ferrite contents: 3-10%




Welding parameter


Welding wire diameter(mm)	1.2	1.6
Welding current(A)	140-240	200-300
Welding voltage(V)	24-30	26-32




Attentions

?Direct current electrode positive(DCEP)welding.(Welding wire connecting anode).

?The elongation of wire is 15-20mm,and CO2 flow is 20-25L/min.

?When in multi pass welding, layer temperature should not exceed 120?.

Product Categories: welding consumables, welding material, Stainless steel flux cored wire, flux cored wire.



why use a flux-cored wire?

A flux-cored wire is optimized to obtain performance not possible with a solid wire. For many welding applications like vertical-up welding, flat welding, welding over galvanized, or welding hard-to-weld steels, a flux-cored wire can do it better and faster.

Although gas metal arc welding (GMAW) with a solid mild steel wire is popular, easy-to-use, and effective for many applications, it does have limitations and drawbacks. For example, GMAW is slow for out-of-position welding. It is either limited to short-circuit transfer, which is restricted by many welding codes due to the tendency for lack-of-fusion, or pulse transfer, requiring a special welding power source. It also requires very clean steel.

The ability to add a variety of materials to the core of the welding wire allows many performance enhancements to be made. Slag formers are added to shield the weld pool and shape and support the weld. Iron powder is used to increase deposition rates. Powdered alloys are added to produce low-alloy deposits or improving the mechanical properties. Scavengers and fluxing agents are used to refine the weld metal.