Stainless steels
FERVEO INX 310 B
covered electrode · stick electrodeCatalogue only
AWS class
~E 310-15
EN ISO class
E 25 20 B 22
Tensile strength (Rm)
560–690 MPa
Classification
| AWS class | ~E 310-15 |
|---|---|
| EN ISO class | E 25 20 B 22 |
Purpose
- Basic-coated variant of INX 310, same Cr-Ni 25/20.5 — wider service range (-196°C to +1200°C) and more toughness than the rutile variant (100 J vs 47 J).
Why it works
Same core as INX 310 R, basic-coated: the manufacturer's impact test gives more than double the toughness (100 J vs 47 J), and the stated service range spans from cryogenic (-196°C) up to +1200°C — the choice when toughness matters alongside hot service.
Fields of application
- Austenitic Cr-Ni steels, ferritic Cr-Ni-Al steels, heat-resistant cast/forged/rolled steels.
- Ceramics, petrochemical industry, furnaces, boilers, chimneys.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.12 |
| Cr | 25 |
| Mn | 3 |
| Ni | 20.5 |
| Si | 0.9 |
Mechanical properties
| Tensile strength (Rm) | 560–690 MPa |
|---|---|
| Yield strength (Rp0.2) | 355 MPa |
| Elongation (A5) | 25 % |
| Impact energy (KV) | 100 J (20 °C) |
Process
| Polarity | DC+ |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 250 mm | 50–80 A | |
| 3.2 mm | 300 mm | 80–110 A | |
| 3.2 mm | 350 mm | 80–110 A | |
| 4 mm | 350 mm | 110–140 A |
Cross-reference
| Replaces EutecTrode 310-17 (Castolin) | Direct replacement |
| Replaces EutecTrode 310-16 (Castolin) | Direct replacement |
| Replaces EI 310B (Magmaweld) | Direct replacement |
| Replaces NIC 310 (Nicrotec) | Direct replacement |
| Replaces BASINOX 310 (Oerlikon) | 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
X15CrNiSi 25 20X12CrNi 25 21X15CrNiSi 20 12G-X 15CrNi 25 20G-X 40CrNi 25 21G-X40CrNiSi22 9X10CrAI 18X10CrAI 24G-X40CrSi 17AISI 305310314.
Advantages
- Service range -196°C to +1200°C.
- Higher toughness than the rutile variant (100 J vs 47 J).