Stainless steels
FERVEO INX 318Si TIG
TIG rodCatalogue only
also as: solid wire
AWS class
ER 318 Si
EN ISO class
G/W 19 12 3 Nb Si
Tensile strength (Rm)
650 MPa
Service temperature
−120 … 400 °C
Classification
| AWS class | ER 318 Si |
|---|---|
| EN ISO class | G/W 19 12 3 Nb Si |
| Material no. (W.-Nr.) | 1.4576 |
| Other standards | ISO 20172: Gruppe 8.1 · TÜV Kennblatt 1000: Gruppe 30 |
Purpose
- TIG rod version of the Cr-Ni-Mo-Nb INX 318Si wire — same -120°C to +400°C service on austenitic stainless.
Why it works
Same alloy as INX 318Si MIG, as a TIG rod (DC-, I1 gas) — fine puddle control for root passes and thin sections in cryogenic service.
Fields of application
- DIN 1.4401, 1.4404, 1.4571, 1.4573, 1.4580, 1.4581, 1.4583 (AISI 316/316L/316Ti).
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.06 |
| Cr | 19 |
| Mn | 1.5 |
| Mo | 2.6 |
| Nb | 12×C |
| Ni | 12 |
| Si | 0.85 |
Mechanical properties
| Tensile strength (Rm) | 650 MPa |
|---|---|
| Yield strength (Rp0.2) | 510 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 65 J |
| Service temperature | −120 … 400 °C |
Process
| Polarity | DC− |
|---|---|
| Shielding gas | I1 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 1 mm | |
| 1.6 mm | |
| 2.4 mm | |
| 3.2 mm |
Supply programme
boxes 5 kg · TIG cold wire D100
Cross-reference
| Replaces SAS 4-IG (Böhler) | Direct replacement |
| Replaces NIC 318 (Nicrotec) | Direct replacement |
| Replaces UTP A 68 Mo (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
1.44011.44041.45711.45731.45801.45811.4583
Advantages
- Service -120°C to +400°C.
- Controlled TIG arc — suits root passes.