FCW S 307-O
307 gas-free cored wire
Product description
– Stainless steel flux-cored wire for gas-shielded arc welding
– 18% chromium – 8% nickel – 6% manganese type deposit
– Outstanding weldability and bead appearance
– Automatic slag removal, excellent radiographic quality
– High productivity for welding in horizontal position
– Can be used in
position – Can be welded under mixed gas or CO2
Product application instructions
APPLICATIONS
– Undercoating on 14% Mn steels, hard steels or steels of unknown composition prior to hardfacing
– Welding and hardfacing of parts subjected to metal abrasion with impact
– Joining dissimilar steels (14% Mn-stainless steel, CMn-stainless steel, etc.)
– Repair work requiring work-hardenable deposited metal with high mechanical strength and toughness
– Shielding steels
Welding positions: EN ISO 6947: PA, PB, PC, (PF, PG, PD) ASME IX: 1G, 1F, 2G, 2F, (3G, 3F, 4F, 4G)
Wear resistance
Metal-Metal
Corrosion
Temperature
Impact
Abrasion
Classification
| AWS A 5.22 | EN ISO 17633-A |
|---|---|
| E307T0-4 - E307T0-1 nearest | T 18 8 Mn R M 3 - T 18 8 Mn R C 3 |
Chemical analysis (%)
| C | Mn | If | Cr | Ni |
|---|---|---|---|---|
| 0.1 | 6.0 | 0.7 | 17.0 | 9.0 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | KCV |
|---|---|---|---|
| 630 | 480 | 40 | 20°C: 50 J |
Why choose this cored wire?
- Ideal for manganese steels and unknown steels
FCW S 307-O contains a lot of manganese (~6-8%) and a little nickel (~4-5%), giving it high toughness and excellent resistance to cracking. It is ideal for :
-welding or hardfacing manganese steels (Hardox type, X120Mn12),
-repairing worn or broken parts without knowing the exact grade.
- High resistance to impact and deformation
The deposit remains relatively ductile and impact-resistant – making it a good choice for :
-quarry or crusher parts,
-Stressed mechanical chassis,
-areas exposed to strong vibrations.
- Gas-free = easy and economical
In the open arc version, this wire can be used without protective gas.
- Very good for reloading and buffer layers
307 is often used as an intermediate layer before depositing a harder alloy, as it offers good grip and a smooth transition between base metal and final hardfacing.
- Good resistance to heat and moderate corrosion
Although not a high-grade stainless steel, it offers better corrosion resistance than conventional steels, and can withstand temperatures of up to 300-350°C.
