Stellite 1
High-carbon high-chromium cobalt alloy offering maximum hardness and abrasion resistance.
Material overview
Stellite 1 is included in the Cobalt-Based Alloys catalog. High-carbon high-chromium cobalt alloy offering maximum hardness and abrasion resistance. Key characteristics for evaluation include Very hard deposit with excellent abrasion and corrosion resistance and limited impact resistance. Typical applications include Cutting tools, bearings and sleeves, pump components, and grain-crushing and hard-wear parts. The dataset currently includes 12 property records covering chemical composition, mechanical properties, and physical properties. Associated standards include A5.21 and A5.13, and product form records cover Cast Product and Bar / Rod. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation must be confirmed against the applicable specification and mill certificate.
Key characteristics
- Very hard deposit with excellent abrasion and corrosion resistance
- limited impact resistance
Typical applications
- Cutting tools
- bearings and sleeves
- pump components
- grain-crushing and hard-wear parts
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 | 11.0-13.0 | wt% | Typical value |
| C | 2.0-2.5 | wt% | Typical value |
| Fe | 3.0 max | wt% | Typical value |
| Mn | 1.0 max | wt% | Typical value |
| Si | 1.0 max | wt% | Typical value |
| Ni | 3.0 max | wt% | Typical value |
| Mo | 1.0 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Hardness | 54-58 HRC | HRC | As cast / as deposited |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 8.6 | g/cm3 | Typical |
| Melting range | 1250-1295 | C | Typical |