1. Introduce
– HS : Abbreviation for Haynes Stellite
– Forged Co-based alloys
– Co-based Cr, W alloy for wear, corrosion and high temperature environments
– Maintains high hardness at 1093°C
– Superior toughness, weldability, corrosion resistance, and wear resistance compared to cast or welded HS 6 (Stellite 6)
– UNS R30016
* Stellite Alloys
- A Co-Cr alloy designed for wear resistance
- Alloys with Cr, C, W, Mo, etc. added to a Co base
- Excellent corrosion, erosion, and wear resistance
→ Cause : Intrinsic properties of hard carbide phase dispersed in the CoCr alloy base
* UNS
- Abbreviation for Unified Numbering Systems for Metals and Alloys
- Unified unique numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* R : Reactive and Refractory Metals and Alloys
* UNS R30016 : 3XXXX : Cobalt
2. Property
– Excellent strength, abrasion resistance, corrosion resistance ,heat resistance, oxidation resistance, corrosion resistance
| Element | Impact |
|---|---|
| Co | Provides high temperature creep strength, abrasion resistance |
| Cr | Provides corrosion resistance, strength |
| W | Provides high temperature hardness, abrasion resistance |
[HS 6B Chemical Composition (%)]
| Co | Cr | Mo | Ni |
|---|---|---|---|
| 51.60 ~ 67.60 | 28.00 ~ 32.00 | Max. 1.50 | Max. 3.00 |
| Fe | C | Mn | W |
|---|---|---|---|
| Max. 3.00 | 0.90 ~ 1.40 | Max. 2.00 | 3.50 ~ 5.50 |
[HS 6B Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| 1000 | 621 | 12 |
[HS 6B Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Specific Heat (0-100℃), J/kg*℃ |
|---|---|---|
| 8.39 | 1265 ~ 1354 | 420 |
3. Standard & Specification
– Specification : UNS R30016
| Product Form | SAE |
|---|---|
| Bar, Rod, Sheet, Plate | AMS 5894, AMS 5387 |
| Pratt & Whitney PWA | 1196, 300, MCL, LCS |
| Boeing BMS | 7-338 |
4. Available Form
– Bar, Rod
– Wire, Coil
– Plate, Sheet
5. Application & Product
– Aerospace, Petroleum
| Application | Product |
|---|---|
| Aerospace | High temperature bearings, Fan blades, Steam turbines |
| Petroleum | Needle valves, Pump plungers, Vapor erosion shields |
(1) Bearing / (2) Fan Blade / (3) Vapor Erosion Shield / (4) Needle Valve
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