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Duplex stainless steel is a type of stainless steel that combines both austenitic and ferritic microstructures, providing enhanced strength and corrosion resistance. Typically composed of chromium, nickel, and molybdenum, duplex stainless steel is known for its high resistance to pitting and stress corrosion cracking. This unique composition allows it to perform well in harsh environments, making it a popular choice in various industrial applications.
| Material composition | Typically contains 18-28% chromium and 4-8% nickel |
| Yield strength | Usually ranges from 450 to 700 MPa |
| Tensile strength | Typically between 600 and 800 MPa |
| Corrosion resistance | Excellent resistance to pitting and crevice corrosion |
| Standard forms | Available as sheets, plates, bars, and pipes |
When selecting duplex stainless steel, consider the specific grade that best fits your application, as different grades offer varying levels of corrosion resistance and mechanical properties. It's important to specify the required tolerances, dimensions, and any relevant certifications such as ASTM or EN standards. Additionally, determine the quantity needed to ensure you receive accurate pricing and delivery timelines.
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Duplex stainless steel offers high strength, excellent corrosion resistance, and better weldability compared to traditional stainless steels.
Yes, duplex stainless steel has magnetic properties due to its ferritic content.
Yes, it is highly resistant to corrosion in seawater, making it suitable for marine environments.
Duplex stainless steel is typically solution annealed to optimize its microstructure and properties.
Duplex stainless steel has higher strength and better resistance to stress corrosion cracking compared to austenitic grades.
Common industries include oil and gas, chemical processing, and marine applications.