Heat-resistant Cr-Mo steels
FERVEO CMO 5 MIG
solid wireCatalogue only
also as: TIG rod
AWS class
5.9 ER 502 A5.28-96
EN ISO class
G/W CrMo5Si
Tensile strength (Rm)
650 MPa
Classification
| AWS class | 5.9 ER 502 A5.28-96 |
|---|---|
| EN ISO class | G/W CrMo5Si |
Purpose
- Solid Cr-Mo wire (5.7% Cr–0.6% Mo, EN ISO G/W CrMo5Si) — MIG/MAG welding of high-heat-resistant steels up to 600°C, for petrochemical process equipment.
Why it works
The higher chromium content (5.7%, versus 2.7% for the FERVEO CMO 2 family) gives the deposit resistance to high-temperature, high-pressure hydrogen attack — the same alloying principle as the FERVEO CMO 5B electrode, here in solid-wire form for MIG/MAG.
Fields of application
- Petrochemical process equipment and high-heat-resistant steels, continuous service up to 600°C.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.07 |
| Cr | 5.7 |
| Mn | 0.5 |
| Mo | 0.6 |
| Si | 0.5 |
Mechanical properties
| Tensile strength (Rm) | 650 MPa |
|---|---|
| Yield strength (Rp0.2) | 500 MPa |
| Elongation (A5) | 18 % |
| Impact energy (KV) | 70 J |
Process
| Polarity | DC+ |
|---|---|
| Shielding gas | M1,M2,M3 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.8 mm | |
| 1 mm | |
| 1.2 mm | |
| 1.6 mm |
Supply programme
spools D100 / D200 / K200 / K300
Base metals
1.7362
Advantages
- Solid-wire format — mechanized/semi-automatic welding productivity and lower starting hydrogen than a covered electrode.
- Same Cr-Mo alloy grade (5Cr) as the FERVEO CMO 5B electrode — consistent in-service behavior across processes.
Limitations
- Specifically intended for pressurized-hydrogen or high-heat-resistance petrochemical service — for conventional steam boilers without that risk, the FERVEO CMO 1/2 grades are usually sufficient.