Stellite 12
Higher-carbon cobalt alloy providing greater abrasion resistance than Stellite 6.
Material overview
Stellite 12 is recorded in the Cobalt-Based Alloys catalog. Higher-carbon cobalt alloy providing greater abrasion resistance than Stellite 6. Its recorded characteristics include Harder than Stellite 6 with better abrasion resistance and somewhat lower impact tolerance. Typical applications include Severe-wear valve and pump parts, saw tips, bearings, and agricultural and industrial knives. The dataset currently includes 12 property records covering chemical composition, mechanical properties, and physical properties. Related standards include A5.21 and A5.13; product form data covers Bar / Rod and Cast Product. The final chemistry, condition, dimensions, test requirements, and documentation package must be confirmed before order acceptance.
Key characteristics
- Harder than Stellite 6 with better abrasion resistance
- somewhat lower impact tolerance
Typical applications
- Severe-wear valve and pump parts
- saw tips
- bearings
- agricultural and industrial knives
Grade names and equivalents
Technical properties
Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.
Chemical composition
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Co | balance | wt% | Typical value |
| Cr | 28.0-32.0 | wt% | Typical value |
| W | 7.0-9.0 | wt% | Typical value |
| C | 1.2-1.7 | wt% | Typical value |
| Ni | 3.0 max | wt% | Typical value |
| Fe | 3.0 max | wt% | Typical value |
| Mo | 1.0 max | wt% | Typical value |
| Mn | 1.0 max | wt% | Typical value |
| Si | 1.0 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Hardness | 45-50 HRC | HRC | As cast / as deposited |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 8.46 | g/cm3 | Typical |
| Melting range | 1265-1290 | C | Typical |