Stellite is a high temperature alloy, mainly composed of cobalt (Co) base, with excellent wear resistance, corrosion resistance and high temperature resistance. Stellite alloy is widely used in various industrial fields, especially those that need to work in harsh environments, such as aerospace, petrochemical, power generation and nuclear industries.
The main matrix element of Stellite, providing high temperature strength and oxidation resistance.
Enhances the corrosion resistance of the alloy.
Improves the hardness and wear resistance of the alloy.
Enhances the hardness and wear resistance of the alloy by forming carbides.
Stellite alloy has extremely high hardness and can maintain excellent wear resistance under high friction and high stress conditions.
Due to the presence of chromium, Stellite alloy can remain stable in acidic, alkaline and oxidizing environments.
Stellite can maintain its mechanical properties and chemical stability at high temperatures, suitable for working under extreme temperature conditions.
For machined Stellite cast turbine products, suitable processing technology and tools are required to cope with their high hardness and wear resistance. Advanced CNC machining technology may be used to ensure the accuracy and efficiency of machining.
In equiaxed crystal casting, this helps to make Stellite cast turbine products have more uniform mechanical properties and good comprehensive performance. The formation of equiaxed crystals is promoted by precisely controlling various parameters in the casting process, such as temperature, cooling rate, etc. This can improve the reliability and stability of the product in use, making it better adapted to various working conditions and environments.
Aerospace industry: In the aerospace field, Stellite products are often used to manufacture high-temperature and high-pressure parts such as turbine blades, turbine disks, and turbine shafts because they can withstand extreme working conditions and harsh environments.
Energy industry: In the energy industry, Stellite products are often used to manufacture key components such as turbines, gas turbines, and turbine generators, which require wear resistance, corrosion resistance, and high temperature resistance.
Oil and gas industry: Stellite products play an important role in the extraction, processing, and transportation of oil and gas. For example, they are used to manufacture key wear-resistant and corrosion-resistant components such as valves, pumps, and drill bits.
Medical devices: Stellite alloys are also widely used in the field of medical devices, such as artificial heart valves, orthopedic implants, etc., because of their biocompatibility and corrosion resistance.
Automobile and shipbuilding: In automobile and shipbuilding, Stellite products are often used to manufacture high-performance engine parts, turbochargers, etc. to improve the performance and reliability of vehicles or ships.
| Stellite | 1 | |||||
|---|---|---|---|---|---|---|
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 28-32 11-3 2.0-3.0 Ni, | Fe, | Si, | Mn, | Mo 50-58 | HRC 8.69 | g/cm3 1248-1290ºC |
| 550-720 | HV 0.314 | lb/in3 2278-2355ºF | ||||
| Stellite | 6 | |||||
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 27-32 3-6 0.9-1.4 Ni, | Fe, | Si, | Mn, | Mo 36-45 | HRC 8.44 | g/cm3 1250-1360ºC |
| 380-490 | HV 0.305 | lb/in3 2282-2480ºF | ||||
| Stellite | 12 | |||||
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 27-32 7.5-9.5 1.4-2.0 Ni, | Fe, | Si, | Mn 45-51 | HRC 8.53 | g/cm3 1225-1280ºC | |
| 435-590 | HV 0.308 | lb/in3 2240-2335ºF | ||||
| Stellite | 21 | |||||
| Co Cr Mo C Ni Others Hardness** Density Melting | Range | |||||
| Base 26-29 4.5-6.0 <0.35 <3.0 Fe, | Si, | Mn 27-40 | HRC** 8.33 | g/cm3 1295-1435ºC | ||
| 290-430 | HV** 0.301 | lb/in3 2360-2615ºF | ||||
| Stellite | 190 | |||||
| Co Cr W C Fe Others Hardness Density Melting | Range | |||||
| Base 27 14 3.3 <3 Ni, | Si, | Mo, | Mn 52-60 | HRC 8.66 | g/cm3 1200-1335ºC | |
| 570-760 | HV 0.313 | lb/in3 2192-2435ºF | ||||
| stellite | 13 | |||||
| Co Cr W Ni C Others Hardness Density Melting | Range | |||||
| Base 28 20 5 0.9 V, | Fe, | Si, | Mn 45-50 | HRC 9.02 | g/cm3 1230-1300ºC | |
| 0.326 | lb/in3 2246-2372ºF | |||||
| stellite3 | ||||||
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 30.5 12.5 2.3 Ni, | Fe, | Si 48-63 | HRC 8.69 | g/cm3 1250-1290ºC | ||
| 0.314 | lb/in3 2280-2355ºF | |||||
| stellite19 | ||||||
| Co Cr W C Si Others Hardness Density Melting | Range | |||||
| Base 31 10.5 1.9 1 Ni, | Fe 51-53 | HRC 8.36 | g/cm3 1239-1299ºC | |||
| 0.302 | lb/in3 2263-2370ºF | |||||
| stellite20 | ||||||
| Co Cr W C Ni Others Hardness Density Melting | Range | |||||
| Base 32.5 17.5 2.5 <2.0 Mo, | Fe, | Si 53-62 | HRC 8.77 | g/cm3 1263-1301ºC | ||
| 0.317 | lb/in3 2305-2374ºF | |||||
| stellite25 | ||||||
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 20 15 0.1 Ni, | Fe, | Si, | Mo, | Mn 20-45 | HRC* 8.31 | g/cm3 1329-1410ºC |
| 0.300 | lb/in3 2425-2573ºF | |||||
| stellite31 | ||||||
| Co Cr W C Ni Others Hardness Density | (deposit) Melting | Range | ||||
| Base 26 7.5 0.5 10.5 Mo, | Fe, | Si 25-35 | HRC* 8.61 | g/cm3 1340-1395ºC | ||
| 0.311 | lb/in3 2245-2545ºF | |||||
| stellite250 | ||||||
| Co Cr Fe C Si Others Hardness Density | (deposit) Melting | Range | ||||
| Base 28 20 0.1 1 Mn 18-29 | HRC 8.05 | g/cm3 1380-1395ºC | ||||
| 0.291 | lb/in3 2515-2540ºF | |||||
| stellite25 | ||||||
| Co Cr W C Ni Others Hardness Density | (deposit) Melting | Range | ||||
| Base 26 7.5 0.5 10.5 Mo, | Fe, | Si 25-35 | HRC* 8.61 | g/cm3 1340-1395ºC | ||
| 0.311 | lb/in3 2245-2545ºF | |||||
| stellite694 | ||||||
| Co Cr W Ni C Others Hardness Density | (deposit) Melting | Range | ||||
| Base 28.5 19.5 5 0.9 V, | Fe, | Si, | Mn 44-50 | HRC 9.02 | g/cm3 1237-1296ºC | |
| 0.326 | lb/in3 2259-2365ºF | |||||
| Stellite | Star | J | Alloy | |||
| Co Cr W C Fe Ni Others Hardness Density | (deposit) Melting | Range | ||||
| Bal 32.5 17.5 2.5 2 2 Mn, | Si 50-63 | HRC 8.76 | g/cm3 1215-1299ºC | |||
| 0.316 | lb/in3 2220-2370ºF | |||||
| Stellite | 4 | Alloy | ||||
| Co Cr W C Others Hardness Density Melting | Range | |||||
| Base 30 14 1 Mn, | Fe, | Si, | Ni 45-49 | HRC 8.61 | g/cm3 1340-1395ºC | |
| 0.311 | lb/in3 2245-2545ºF |
| Stellite | American standard（UNS） | ASTM Standards |
|---|---|---|
| Stellite 1 | UNS R30001 | ASTM A732 |
| Stellite 6 | UNS R30006 | ASTM A732 |
| Stellite 12 | UNS R30012 | ASTM A732 |
| Stellite 21 | UNS R30021 | ASTM A732 |
| Stellite 31 | UNS R30031 | ASTM A732 |
Turbine blades made of equiaxed casting are widely used in aircraft engines and gas turbines. These blades have good high temperature strength and corrosion resistance, and are suitable for high temperature and high pressure parts of turbines.
Turbine disks are important components that support turbine blades and transmit power. The equiaxed casting process can produce turbine disks with good mechanical properties and durability, which are suitable for various turbine equipment.
Combustion chamber liners need to work in high temperature and high pressure environments. The equiaxed casting process can produce liners with high temperature oxidation resistance and corrosion resistance.
Widely used in aircraft engines and gas turbines. This design helps to improve the manufacturing accuracy of blades, reduce stress concentration, and facilitate replacement and maintenance.
Guide vanes are used to adjust the airflow direction and improve the working efficiency of turbines. Equiaxed casting can ensure that these blades have uniform grain structure and good mechanical properties.
Engine turbine accessories also include several key components, each of which plays a vital role in the high temperature, high pressure and high speed environment of the engine.
High strength and durability
Excellent fatigue performance
Complex shape manufacturing capability
Material diversity