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Duplex stainless steel


Eastking Steel has a large stock of 2304, 2205 and 2507 duplex stainless steel plates to choose from, which is sufficient to meet your strict requirements for corrosion resistance and high strength.

Duplex stainless steel is a stainless steel sheet with a relatively high chromium content (between 18% and 28%) and an appropriate amount of nickel (between 4.5% and 8%). The almost equal content of ferrite and austenite forms a balanced (two-phase) microstructure, combined with its chemical composition can explain its strong corrosion resistance and excellent mechanical properties. Alloys 2304 and 2205 are the most common grades. The ability to resist chloride stress corrosion cracking is another significant feature of this stainless steel sheet.

Compared with ordinary austenitic or duplex stainless steels, super duplex stainless steels have stronger pitting and crevice corrosion resistance. This is because chromium, molybdenum and nitrogen are further added to this grade. Alloy 2507 is the most common super duplex grade.

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