CK20 Stainless Steel Properties, Composition & Equivalent
CK20 ASTM A743 A351 Grade(UNS): J94202 Alloy Family: Austenitic Stainless Steel Equivalent: 310 stainless steel
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What is CK20 Stainless Steel ?
CK20 is a kind of soft austenitic steel alloy has high oxidation resistance. Which is used in sulfite solution and dilute sulfuric acid at room temperature.
This kind of stainless steel has high strength, less quenching and no temper embrittlement. It can be used in parts with low stress and high toughness requirements.
CK20 stainless steel alloy is generally used in mechanical parts and automobile manufacturing to produce parts with high surface requirements and low center requirements
CK20 chemical composition
| C | Mn | Si | P | S | Cr | Ni | |
| Max | 0.20 | 2.00 | 2.00 | 0.04 | 0.04 | 27.0 | 22.0 |
| Min | – | – | – | – | – | 23.0 | 19.0 |
Heat treatment
Heat to 2000°F [1093°C] minimum, hold for sufficient time to heat casting to temperature, quench in water or rapid
cool by other means
Mechanical Properties
| Grade | CK20 |
| Reduction of Area, min / % | – |
| Yield Strength, min | Ksi – 28, MPa – 195 |
| Tensile Strength, min | Ksi – 65, MPa – 450 |
| Elongation[50mm], min / % | 30 % |
Features
- Higher strength
- Less quenching
- High surface toughness
- High oxidation resistance
Applications
- Petroleum industry
- Electronic product
- Chemical industry
- Food industry
- Aerospace
- Military project
CK20 Equivalent
310 Stainless steel
310 stainless steel is austenitic chromium-nickel stainless steel.
It has good oxidation resistance and corrosion resistance. The strength of 310 stainless steel is higher due to its high chromium and nickel content. 310 stainless steel can work at high temperature and has good high temperature resistance.