Austenitic stainless steels
Austenitic stainless steels are the most common type, known for their excellent corrosion resistance and workability.
- 304: The most widely used grade, offering good corrosion resistance and workability, extensively used in food processing, chemical equipment, and architectural decoration.
- 316: Contains more molybdenum than 304, providing better corrosion resistance, especially in chloride environments, suitable for marine environments and chemical processing.
- 321: Added titanium to prevent carbide precipitation at high temperatures, suitable for high-temperature environments like aerospace components and furnace equipment.
- 309: High heat resistance, suitable for high-temperature applications such as furnaces and heat exchangers.
Ferritic Stainless Steel Sheets
Ferritic stainless steels contain higher chromium, providing good oxidation resistance but relatively lower corrosion resistance.
- 430: Commonly used in automotive exhaust systems, kitchen equipment, and household appliances, with good oxidation resistance and formability.
- 409: Good oxidation resistance, often used in the lower parts of automotive exhaust systems.
- 446: Excellent high-temperature performance, suitable for high-temperature furnaces and heating equipment.
Martensitic Stainless Steel Sheets
Martensitic stainless steels contain higher carbon, providing higher hardness and strength but poorer corrosion resistance.
- 410: Commonly used for making cutlery, pump bodies, and mechanical parts, with good hardness and wear resistance.
- 420: Used for making high-hardness cutlery and surgical instruments, with high wear resistance and heat treatability.
- 440C: A high-carbon martensitic stainless steel with extremely high hardness, suitable for high-demand cutting tools and blades.
Duplex Stainless Steel Sheets
Duplex stainless steels combine the properties of austenitic and ferritic stainless steels, providing high strength and excellent corrosion resistance.
- 2205: The most common duplex stainless steel, known for its excellent strength and corrosion resistance, suitable for the oil and gas industry.
- 2507: A super duplex stainless steel with higher corrosion resistance and strength, ideal for extreme environments such as marine and chemical processing equipment.
These specific grades cover various application needs of stainless steel sheets. Selecting the appropriate grade depends on the specific usage environment and performance requirements.