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Stellite 21 Alloy
2024-05-08 12:00Stellite 21 Alloy
Stellite 21 alloy is a cobalt chrome molybdenum alloy known for its excellent cavitation, galling, and metal-to-metal sliding wear resistance. This alloy can be used to make welding wire, powder for hard-facing, thermal spraying, spray welding, and other processes, castings, forgings, and powder metallurgy parts. It is not recommended for severe hard particle abrasion.
Stellite 21 Chemical Compositions
C (wt%) | Mn (wt%) | Si (wt%) | Cr (wt%) | Ni (wt%) | Mo (wt%) | W (wt%) | Co (wt%) | Fe (wt%) | Others | Density (g/cm³) |
|
| ≤ |
| ≤ |
|
|
| ≤ |
| ≥ |
0.2～0.3 | 1.0~2.0 | 1.0 | 26.0～28.0 | 2.5 | 5.0~6.0 | - | Bal. | 2.5 |
| 8.33 |
Physical Properties
Temperature | Hardness | Tensile Strength | Yield Strength | Elongation |
RT | 27~40HRC | 710 MPa | σ 0.2 ≥/MPa | δ5≥ (%) |
The Mechanical Properties of Stellite 21
Stellite 21 alloy exhibits excellent mechanical properties that make it promising for a wide range of applications in multiple industrial sectors.
First, Stellite 21 alloy stands out for its excellent wear resistance. It can resist friction, wear, and abrasive erosion, so it has significant advantages in manufacturing valve parts, bearings, and cutting tools.
Secondly, the alloy also has excellent corrosion resistance. It is resistant to corrosive media such as acids, alkalis and salt water, making it widely used in chemical, oil and natural gas industries.
Finally, Stellite 21 alloy can maintain strength and stability in high-temperature environments. This characteristic makes it an indispensable material in aerospace, energy, and high-temperature technology, especially when it is necessary to meet the requirements of both high-temperature and abrasion resistance
.
The Application of Stellite 21
1. Oil and Gas Industry: Stellite 21 is frequently chosen for crafting parts that withstand harsh conditions and corrosive substances like valves, sealing rings, pump casings, and wellhead equipment.
2. Chemical Industry: Stellite 21 is widely applied in equipment and pipelines due to its superb corrosion resistance, making it suitable for valves, pumps, and pipeline joints that face acidic or alkaline substances, as well as high temperatures and pressures.
3. Aerospace Applications Stellite 21 makes engine components such as turbine blades, nozzles, and combustion chamber parts, offering durability against high temperatures and wear.
4. Power Generation: Stellite 21 alloy is commonly used in power stations for coal mill components, boiler nozzles, and coal grinding rollers, where it withstands the wear caused by pulverized coal and high temperatures.
Except for industries, Stellite 21 can be used in water pump parts, chemical reactors, and other areas where high wear and corrosion resistance are needed.
Shenyang Top New Materials Co., Ltd. uses innovative research and development of high-performance alloy materials as its core driving force. Facing the rapid advancement of science and technology, the requirements for material performance in various industries are also constantly increasing, especially in the energy and industrial fields.
Against this background, we firmly believe that the high-performance alloy materials developed by Shenyang Top New Materials Co., Ltd. will demonstrate their unique value in a broader range of fields with their excellent performance. These materials can meet the growing application needs, provide unprecedented solutions for various industries, and promote the entire society's scientific and technological progress and industrial upgrading.
In the future, Shenyang Top New Materials Co., Ltd. will continue to be committed to the research, development and innovation of high-performance alloy materials, provide safer, more reliable and more efficient products and services to customers worldwide, and jointly create better future.