Product description
– Stainless steel flux-cored wire for gas-shielded arc welding
– Austenitic-ferritic deposit type 29% chromium – 9% nickel
– Good weldability
– Clean 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
The high alloying level and high ferrite content of the deposited metal enable FCW S 312 to benefit from very high tolerance to hot cracking and dilution with a very 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: EN ISO 6947: PA, PB, ASME IX: 1G, 1F, 2F.
Wear resistance
Abrasion
Impact
Metal-Metal
Corrosion
Temperature
Classification
| AWS A 5.22: | EN ISO 17633-A: | Werkstoff Nr. |
|---|---|---|
| E312T0-4 - E312T0-1 | T 29 9 R M 3 - T 29 9 R C 3 | 1.4337 |
Chemical analysis (%)
| C | Mn | If | Cr | Ni | Mo |
|---|---|---|---|---|---|
| 0.03 | 1.3 | 0.8 | 29.0 | 8.6 | 0.4 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | KCV |
|---|---|---|---|
| 860 | 650 | 25 | 20°C : 40 J |
Why choose this cored wire?
-
Very good resistance to cracking
➤ 312 contains a high proportion of ferrite in an austenitic matrix, making it extremely resistant to hot cracking. -
Perfect for welding dissimilar materials
➤ Ideal for welding carbon steel with stainless steel, or steels that are difficult to identify (e.g. cast steels, tool steels, hardened steels…). -
Excellent arc stability in the flat position
➤ Flux-cored wire provides a smooth, stable arc and a clean deposit with little spatter, facilitating quality flat-welding work. -
Good compromise between mechanical strength and ductility
➤ Good resistance to shock, vibration and thermal cycling. The deposited metal has a high mechanical strength (often > 800 MPa). -
Easy to weld
➤ Even in less-than-ideal conditions (contaminated steels, repairs), this wire is highly tolerant, with little preparation required.
