MH-SPCo-21 Cobalt Alloy Solid Welding Wire
Standard：AWS A5.21，ERCoCr-E (Co 21).
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It has excellent resistance on high heat, corrosion and abrasion. Recommended use for making fuild valve,brass casting die , vlave seat, etc.
| Hardness | 28HRC-40HRC |
| Number | Co | Cr | W | C | Ni | Mo | Fe | Si | other |
| MH-SPCo-21 Cobalt Alloy Solid Welding Wire | Bal. | 28 | - | 0.25 | 2.9 | 5.2 | ≤3 | ≤1.5 | ≤0.5 |
