Stainless steels
FERVEO INX 312 MIG
solid wireCatalogue only
AWS class
ER312
EN ISO class
G/W 25 4
Tensile strength (Rm)
700 MPa
Classification
| AWS class | ER312 |
|---|---|
| EN ISO class | G/W 25 4 |
| Material no. (W.-Nr.) | 1.4820 |
Purpose
- Mo-free austenitic Cr-Ni 26/5 solid wire, corrosion-resistant and resistant to sulphur attack at high temperature — scaling-resistant to 1150°C.
Why it works
DIN 1.4820 alloy (Cr-Ni 26/5, molybdenum-free) — designed as the final top layer over a more ductile filling layer (e.g. FERVEO INX 310), with good resistance to sulphur attack in combustion atmospheres up to 1150°C.
Fields of application
- Equivalent/comparable Mo-free corrosion-resistant steels and castings (DIN 1.4713, 1.4724, 1.4742, 1.4762, 1.4821, 1.4823).
- Combustion atmospheres with high-temperature sulphur attack.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.04 |
| Cr | 26 |
| Ni | 5 |
| Si | 0.9 |
Mechanical properties
| Tensile strength (Rm) | 700 MPa |
|---|---|
| Yield strength (Rp0.2) | 480 MPa |
| Elongation (A5) | 18 % |
| Impact energy (KV) | 50 J |
Process
| Polarity | DC+ |
|---|---|
| Shielding gas | M13 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.8 mm | |
| 1 mm | |
| 1.2 mm | |
| 1.6 mm |
Supply programme
spools D100 / D200 / K200 / K300
Cross-reference
| Replaces MI 312 (Magmaweld) | Direct replacement |
| Replaces UTP A 651 (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
1.47131.47241.47421.47621.48211.4823
Advantages
- Scaling-resistant to 1150°C.
- Good resistance to hot sulphur attack.
- Weldable on MIG/MAG and TIG.
Limitations
- Intended for continuous high-temperature oxidation resistance; if the part cools after prolonged exposure at 600–900°C, room-temperature toughness may drop due to sigma-phase formation.