None
Wear/Heat/Corrosion Resistance
ISO 9001
1000ºC
TOP
Carton or Plywood Package
ASTM, AMS, GB, API, AWS A5.21
Shenyang
Product Description
Custom Cobalt Alloy Products Manufacturer
SYTOP began to produce cobalt alloys for about 30 years and has produced 5000+ products for different industries. SYTOP can provide detailed drawings for you, and offer a wide range of products and custom solutions to meet the needs of high temperature, wear and corrosion applications.

Why Choose SYTOP as Your Trusted Manufacturer
SYTOP has 30 years of experience in R&D and production, strict quality control measures ensuring superior products, 17+ years of export experience, free design services, and continual investment in advanced processing technology to meet evolving needs.

1. Professional Manufacturer
SYTOP is a professional cobalt alloys and cermets manufacturer, boasting about 30 years of experience in R&D and production.
SYTOP is a professional cobalt alloys and cermets manufacturer, boasting about 30 years of experience in R&D and production.
2. Quality and After-Sales Guarantee
Maintain strict quality control measures throughout the manufacturing and offer after-sales support to guarantee swift issue resolution.
Maintain strict quality control measures throughout the manufacturing and offer after-sales support to guarantee swift issue resolution.
3. 17+ Years Export Experience
With more than 17 years of export experience, SYTOP has in-depth partnerships with many countries, especially Europe and America.
4. Free Drawing and Design
With more than 17 years of export experience, SYTOP has in-depth partnerships with many countries, especially Europe and America.
4. Free Drawing and Design
Offer free design services. Our professional technical team of experts can develop customized solutions tailored to your specific requirements.
What are the Benefits of Cobalt Alloys?
Cobalt alloys, metal materials with cobalt as the main component, form a diversified alloy system by adding different proportions of chromium, nickel, tungsten, molybdenum, iron, and other elements. These alloys not only inherit the excellent properties of cobalt itself, such as high melting point, good thermal shock resistance, and fatigue resistance, but also further improve their wear resistance, corrosion resistance, and high-temperature stability through the interaction between elements.
Cobalt Alloys Datasheet
C (wt%) | Mn (wt%) | Si (wt%) | Cr (wt%) | Ni (wt%) | Mo (wt%) | W (wt%) | Co (wt%) | Fe (wt%) | |
ST1 | 2.2~2.8 | 1.0 | 2.0 | 29.0~33.0 | 3.0 | 1.0 | 11.0~14.0 | Bal. | 3.0 |
ST3 | 2.0~2.7 | 1.0 | 1.0 | 29.0~33.0 | 3.0 | 1.0 | 11.0~14.0 | Bal. | 3.0 |
ST4 | 0.8~1.3 | 1.0 | 1.5 | 28.0~32.0 | 3.0 | 1.5 | 12.5~15.5 | Bal. | 3.0 |
ST6 | 0.9~1.4 | 1.0 | 1.5 | 27.0~31.0 | 3.0 | 1.5 | 3.5~5.5 | Bal. | 3.0 |
ST6B | 0.9~1.4 | 0.5~2.0 | 0.2~2.0 | 28.0~32.0 | 3.0 | 1.5 | 3.5~5.5 | Bal. | 3.5 |
ST 12 | 1.1~1.7 | 1.0 | 1.0 | 28.0~32.0 | 3.0 | - | 7.0~9.5 | Bal. | 3.0 |
ST 19 | 1.5~2.1 | 1.0 | 1.0 | 29.5~32.5 | 3.0 | - | 9.5~11.5 | Bal. | 3.0 |
ST20 | 2.2~3.0 | - | 2.0 | 30.0~34.0 | 3.0 | 1.0 | 14.0~19.0 | Bal. | 3.0 |
ST 21 | 0.2~0.3 | 1.0~2.0 | 1.0 | 26.0~28.0 | 2.5 | 5.0~6.0 | - | Bal. | 2.5 |
ST25 | 0.1 | 1.5 | 0.5 | 19.0~21.0 | 9.0~11.0 | - | 14.0~16.0 | Bal. | 3.0 |
ST 31 | 0.45~0.55 | 1.0 | 1.0 | 24.5~26.5 | 9.5~11.5 | 0.5 | 7.0~8.0 | Bal. | 2.0 |
ST 694 | 0.80~1.20 | - | 0.8~1.2 | 26.5~29.5 | 4.0~6.0 | - | 18.0~20.0 | Bal. | 3.0 |
Applications of Cobalt Alloy Products
- Steel industry: Using cobalt alloy parts as sinking roller sleeves and stabilizing roller sleeves in the production process of hot-dip galvanizing production lines can extend their service life, reduce downtime and maintenance costs, and improve the overall efficiency and productivity of the steel plant.
- Power plants: Cobalt alloy 6 will be used as turbine blade patches or valve spare parts in power plants under high temperature and wear conditions. Cobalt alloy has excellent corrosion resistance, but the whole body is usually unused because of the high cost.
- Oil and natural gas: In the oil and natural gas industry, equipment operating conditions are relatively harsh, which may be the cold Arctic, the hot and dry desert, or even the sea, so the life expectancy of materials is very high.
- Automotive industry: Cobalt alloys significantly improve engine performance and extend their service life due to their excellent wear resistance and high-temperature strength. Because of this, the alloy is widely used in engine parts such as exhaust valve seats.
- Food processing: Food processing equipment usually must operate under multiple challenges, such as acid and alkali corrosion, electrochemical corrosion, high temperature, and wear. In this case, material safety is critical. Cobalt alloy has become the material of choice for homogenizer components in the food processing industry due to its excellent high-temperature wear and corrosion resistance.
- Cobalt alloy is also suitable for harsh environments requiring high temperature, wear, and corrosion resistance.
Packaging and Shipping
Securely packaged to ensure safe delivery and product integrity, carton boxes and plywood cases are equipped with bubble wrap and EPE foam for optimal protection during transit.

Securely packaged to ensure safe delivery and product integrity, carton boxes and plywood cases are equipped with bubble wrap and EPE foam for optimal protection during transit.

