Stellite 1
Details
Lork Group's high-quality Stellite 1 is a cobalt-chromium-tungsten-based hardfacing alloy. This combination of properties enables extreme abrasion resistance, high hot hardness, and excellent corrosion resistance.
Products Description
Lork Group's high-quality Stellite 1 is a cobalt-chromium-tungsten-based hardfacing alloy. This combination of properties enables extreme abrasion resistance, high hot hardness, and excellent corrosion resistance. Through casting or hardfacing deposition, Stellite 1 exhibits hardness levels in the range of HRC 50-58. Stellite 1 is used in many different industries, from pump sleeves, rotary seal rings, wear pads, bearing sleeves, to high-temperature valve sealing surfaces.
Corresponding standard
- Castings：UNS R30001
- Wire/Rod：UNS W73031 (Wire),AWS A5.21 / ASME SFA 5.21 ERCoCr-C
- Electrode：UNS W73001,AWS A5.13 / ASME SFA 5.13 ECoCr-C
Stellite 1 Chemical Composition
|
Element |
Content (%) |
|
Co |
43.0-59.0 |
|
Cr |
28.0-32.0 |
|
W |
11.0-14.0 |
|
C |
2.0-3.0 |
|
Ni |
≤ 3.0 |
|
Fe |
≤ 3.0 |
|
Si |
≤ 1.0-2.0 |
|
Mn |
≤ 1.0-2.0 |
Stellite 1 Physical properties
|
Performance Indicators |
Typical Values |
|
Density |
8.69 g/cm³ |
|
Melting range |
1190 – 1345°C |
|
Hardness (room temp.) |
50 – 58 HRC / 550 – 720 HV (Typical values for as-cast state) |
|
Magnetic properties |
Non-magnetic |
|
Thermal conductivity |
Approx. 13 – 14.8 W/(m·K) |
|
Electrical resistivity |
Approx. 0.85 – 0.94 μΩ·m |
|
Coefficient of linear expansion |
Approx. 11.5 × 10⁻⁶/K (20–100°C) |
Stellite 1 Mechanical properties
|
Tensile strength |
Approx. 550–600 MPa (as-cast) |
|
Yield strength |
Approx. >450 MPa |
|
Elongation |
< 1–3% |
|
Elastic modulus |
Approx. 248 GPa (as-cast); Approx. 230 GPa (HIP) |
|
Compressive strength |
Approx. 2000–2500 MPa |
Stellite 1 Application
- High-temperature, high-pressure valve seats
- Pump sleeves
- Wear-resistant liners
- Hot shear blades
- Hot forming dies
- Boiler wear parts
- Reactor agitator blades
- Refiner plates