Mild & carbon steels
FERVEO STL FD2 FCW
flux-cored wire (FCW)Catalogue only
AWS class
E 71 TGS
EN ISO class
EN ISO 17632-A T 42 Z W NO 1 H5
Tensile strength (Rm)
520 MPa
Classification
| AWS class | E 71 TGS |
|---|---|
| EN ISO class | EN ISO 17632-A T 42 Z W NO 1 H5 |
Purpose
- Self-shielded flux-cored wire, no shielding gas needed, for low-alloy steel (AWS E 71 TGS, EN ISO 17632-A T 42 Z W NO 1 H5) — the only self-shielded reference in the FERVEO STL ladder.
Why it works
The alloy system (with aluminum as the main deoxidizer) generates its own protective atmosphere without a gas bottle — weldable outdoors or in wind, where conventional shielding gas would disperse.
Fields of application
- Joining low-alloy steel, especially thin sheet, including galvanized sheet, in all positions and with no shielding gas needed.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.15 |
| Al | 0.8 |
| Mn | 1 |
| Si | 0.3 |
Mechanical properties
| Tensile strength (Rm) | 520 MPa |
|---|---|
| Elongation (A5) | 22 % |
Process
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-upPGvertical-down |
|---|---|
| Requires shielding gas | Self-shielded (gasless) |
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.9 mm | |
| 1.2 mm | |
| 1.6 mm | |
| 2.4 mm | |
| 3.2 mm |
Supply programme
spools D100 / D200 / K200 / K300 · Ø 0.9 / 1.2 / 1.6 mm
Base metals
St 35-St 55St 35.4-St 55.4StE255-StE 380HI-HII17Mn419Mn6GS 38-GS 52S235JRG2-S355J2P235GHP265GHP295GH
Advantages
- No shielding gas required — weldable outdoors or in windy conditions where a conventional gas wouldn't be viable.
- Easily removable slag, weldable in all positions.
Limitations
- Without shielding gas, metallurgical control of the deposit is less precise than a gas-shielded flux-cored wire — for indoor shop work, the gas-shielded range (FERVEO STL BF31/MF10/RF14/MF35 FCW) usually gives a better result.