Mild & carbon steels
FERVEO STL SG3 TIG
TIG rodCatalogue only
also as: solid wire
AWS class
ER 70S-6
EN ISO class
G 46 4 M21 4Si1
Tensile strength (Rm)
510–610 MPa
Classification
| AWS class | ER 70S-6 |
|---|---|
| EN ISO class | G 46 4 M21 4Si1 |
| Other standards | ISO 20172: Gruppe 1.1 |
Purpose
- Solid MIG rod with higher manganese and silicon content than FERVEO STL SG2, for carbon and low-alloy steel (AWS ER 70S-6, EN ISO G 46 4 M21 4Si1).
Why it works
Higher Mn-Si than FERVEO STL SG2 further improves weld-pool deoxidation and steps up mechanical strength, useful on parts with more surface oxide or where extra strength margin is wanted.
Fields of application
- General carbon and low-alloy steel, MAG welding in all positions with CO2 or mixed gas, where extra strength or deoxidation margin is wanted.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.08–0.13 |
| Mn | 1.6–1.9 |
| Si | 0.8–1.2 |
Mechanical properties
| Tensile strength (Rm) | 510–610 MPa |
|---|---|
| Yield strength (Rp0.2) | 390–490 MPa |
| Elongation (A5) | 25 % |
| Impact energy (KV) | 90 J |
Process
Sizes and part numbers
| Ø | Request |
|---|---|
| 1 mm | |
| 1.6 mm | |
| 2.4 mm | |
| 3.2 mm |
Cross-reference
| Replaces UNION I 52 (Böhler) | Direct replacement |
| Replaces OK Tigrod 12.64 (ESAB) | Direct replacement |
| Replaces ST-50.6 (Hyundai) | Direct replacement |
| Replaces INETIG (Inefil) | Direct replacement |
| Replaces LNT 26 (Lincoln) | Direct replacement |
| Replaces TG 3 (Magmaweld) | Direct replacement |
| Replaces CARBOROD 1A (Oerlikon) | Direct replacement |
| Replaces F57 (Selectarc) | 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
St 35-St 55St 35.4-St 55.4StE255-StE 420HI-HII-HIII17Mn419Mn6GS 38-GS 52S235JRG2-S355J2P235GHP265GHP295GHP355GH
Advantages
- More deoxidation and one mechanical-strength step above FERVEO STL SG2.
Limitations
- Only available in MIG format, unlike FERVEO STL SG1/SG2 which are also offered as TIG rod.