FCW S 312-O

Special flux cored self shielded stainless steel wire for open arc welding

Description & applications

•Special flux cored self shielded stainless steel wire for open arc welding

•29% chromium - 9% nickel deposit

•Sound deposits are obtained even in the presence of cross draughts

•Primary choice for cladding and rebuilding application

•Suited for joining

•Provides maximum productivity for outdoor jobs

•The weld deposit workhardens and gives good wear and friction resistance


The FCW S series of wires is designed for on-site weld surfacing, repair and assembly of stainless steels. Good quality welds may be obtained, even when they are used in difficult weather conditions.


•Welding stainless steels of similar composition or ferritic stainless steels.

•Joining stainless steels to mild and low-alloyed steels.

•Buffer layers before hardsurfacing.

•Maintenance on « hard-to-weld steels ».

•Welding high carbon hardenable steels, of known or unknown composition and generally most of steels subject to cracking such as tool steels, manganese steels, spring steels and high-speed steels.


ASME IIC SFA 5.22 / AWS A 5.22 EN 12073
E312T0-3 T 29 9 U N 3

Typical weld metal composition (%)

C Mn Si Cr Ni Mo S P
0.10 1.30 0.8 29.0 9.50 0.40 0.008 0.02

All weld metal mechanical properties

Rm [MPa] Rp0.2% [MPa] A [%] KCV [J]
800 670 22 30 : +20°C

Operating conditions

Current type Gas flow rate Stick out Recovery
DC (+) - 25-45 mm 88%

Welding positions

FCW S wires are weldable downhand, on fillets, in the horizontal-vertical position, and on inclined welds ascending or descending.

Packings & Diameters

Diameters [mm] 1.2-1.6-2.0-2.4
Packing(s) EN 759 : BS300
Weight [Kg] 15
Description -
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