Product description
Cobalt-based flux-cored wire offering exceptional resistance to metal-to-metal wear in corrosive, high-temperature environments. The deposited metal work-hardens to hardnesses in excess of 45 HRC. FCW 21-O is less susceptible to cracking than other cobalt-based alloys, making it ideal for use on parts subjected to repeated thermal cycling and impact. It is recommended for hardfacing most iron- and nickel-based materials.
It contains a self-protecting flux for site and outdoor work, giving an easily removable slag and leaving a smooth bead.
The product is used for seats and guides of large valve bodies for water and high pressure, stamping dies, pump shafts, sleeves etc…
Product application instructions
Wear resistance
Metal-Metal
Corrosion
Temperature
Impact
Abrasion
Classification
| EN 14700 | AWS A 5.21 | DIN 8555 |
|---|---|---|
| TCo1 | ERCCoCr-E | MF20-GF-350/50-CKTZ |
Chemical analysis (%)
| C | Mn | If | Cr | Ni | Mo | Fe | Co |
|---|---|---|---|---|---|---|---|
| 0.25 | 1.0 | 1.0 | 28.5 | 3.0 | 5.5 | 4.0 | Bal. |
Mechanical characteristics
| Hardness - As welded | Hardness - Work hardened |
|---|---|
| 33 HRc | 47 HRc |
Why choose this cored wire?
Choosing our FCW 21-O, in open arc, produces a deposit resistant to metal-to-metal wear, corrosion and thermal shock up to 800°C. It is particularly stable in conditions of alternating abrasion and oxidation.
Its austenitic matrix structure guarantees good toughness, even when hot.
The open arc makes it easy to use on site without the need for external gases. It is an excellent compromise between hardness, ductility and thermal resistance.
