Stainless steels
FERVEO INX 309LSi MIG
solid wireCatalogue only
also as: TIG rod
AWS class
ER 309 LSi
EN ISO class
G/W 23 12 L Si
Tensile strength (Rm)
600 MPa
Classification
| AWS class | ER 309 LSi |
|---|---|
| EN ISO class | G/W 23 12 L Si |
| Material no. (W.-Nr.) | 1.4332 |
Purpose
- Low-carbon Cr-Ni 24.5/13.5 solid wire for joining unalloyed and low-alloy steel to stainless steel resistant to intergranular corrosion up to 300°C.
Why it works
The wire version (MIG/MAG, also TIG) of the 309L class — like the electrode, it works as an intermediate layer and for joining dissimilar steels, with low carbon to avoid stainless sensitization.
Fields of application
- DIN 1.4583, 1.4710, 1.4729, 1.4740, 1.4825, 1.4828, 1.4878 (heat-resistant steels and castings).
- Intermediate layers and dissimilar-steel joining.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.02 |
| Cr | 24.5 |
| Mn | 1.8 |
| Ni | 13.5 |
| Si | 0.85 |
Mechanical properties
| Tensile strength (Rm) | 600 MPa |
|---|---|
| Yield strength (Rp0.2) | 400 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 65 J |
| Service temperature | −60 … 300 °C |
Process
| Polarity | DC+ |
|---|---|
| Shielding gas | M11,M12 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.8 mm | |
| 1 mm | |
| 1.2 mm | |
| 1.6 mm |
Supply programme
spools C300 / D100 / D200 / K200 / K300
Cross-reference
| Replaces CN 23/12-IG (Böhler) | Direct replacement |
| Replaces AVESTA 309L-Si (Böhler) | Direct replacement |
| Replaces OK Autrod 309LSi (ESAB) | Direct replacement |
| Replaces SM-309L (Hyundai) | Direct replacement |
| Replaces INEFIL INOX 309 LSI (Inefil) | Direct replacement |
| Replaces MG-S309LS (Kobelco) | Direct replacement |
| Replaces LNM 309LSi (Lincoln) | Direct replacement |
| Replaces MI 309LSi (Magmaweld) | Direct replacement |
| Replaces NIC 309 L (Nicrotec) | Direct replacement |
| Replaces NIC 309 LSI (Nicrotec) | Direct replacement |
| Replaces INERTFIL 309LSi (Oerlikon) | Direct replacement |
| Replaces 24/12S (Selectarc) | Direct replacement |
| Replaces 24/12 (Selectarc) | Direct replacement |
| Replaces UTP A 6824 LC (UTP) | Direct replacement |
Equivalence refers to the classification (AWS / EN ISO), not to product identity. In applications with a qualified procedure (WPS), validate the substitution before use.
Base metals
1.45831.47101.47291.47401.48251.48281.4878
Advantages
- Corrosion resistant up to 300°C.
- Weldable in MIG/MAG and also in TIG.
Limitations
- High ferrite content in the deposit: risk of sigma-phase embrittlement under sustained exposure at 600–900°C — not recommended for critical structures in that range.