FCW Sub 312
Slag-free stainless flux-cored wire for gas-shielded arc welding
Product description
– Slag-free stainless flux-cored wire for gas-shielded arc welding
– 29% chromium – 9% nickel deposit
– Improved weldability and productivity compared with corresponding solid wires
– Very secure penetration, good wetting, excellent radiographic quality
– High welding speed in horizontal position
Product application instructions
The high alloying level and high ferrite content of the deposited metal make FCW Sub 312 highly tolerant of hot cracking and dilution with a wide range of base metals.
Preheating can be minimized or even avoided. The deposited metal hardens and resists frictional wear.
Examples:
– Joining stainless steels of similar composition or ferritic stainless steels
– Heterogeneous assemblies between stainless steels and non- or low-alloy steels
– Underlayment before hard surfacing
– Maintenance work on steels with limited weldability
– Welding of high-carbon hardening steels, of defined or undefined composition, and generally of all crack-sensitive steels such as tool steels, manganese steels, spring steels and high-speed steels.
Welding positions: The FCW Sub 312 can be welded both flat and in position, adapting the type of transfer and current intensity as with solid wire.
Wear resistance
Corrosion
Classification
| ASME IIC SFA 5.9 / AWS A 5.9 | EN ISO 17633-A |
|---|---|
| EC312 | T 29 9 M M 1 |
Chemical analysis (%)
| C | Mn | If | Cr | Ni | Mo | S | P |
|---|---|---|---|---|---|---|---|
| 0.03 | 1.50 | 0.55 | 28.5 | 9.00 | 0.40 | 0.008 | 0.015 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | KCV [J] |
|---|---|---|---|
| 800 | 610 | 25 | +20°C : 40 |
Why choose this cored wire?
FCW Sub 312L is a rutile stainless steel flux-cored wire for welding dissimilar, difficult-to-weld or high-alloy steels. Thanks to its unique composition (29Cr-9Ni type), it offers excellent mechanical strength, ductility and crack resistance, even in extreme conditions.
The benefits of FCW Sub 312L :
– Ideal for dissimilar or unfamiliar steels: perfect for joining or repairing manganese steels, tool steels, cast irons or austenitic and martensitic stainless steels.
-Very high resistance to cracking: the deposited metal absorbs mechanical stress without breaking.
– For maintenance and repair: often used for hardfacing, reconstituting or welding on worn or cracked parts.
