Comparison of Duplex Stainless Steel 2205 and 2507

Duplex stainless steel 2507 (S32750) has higher corrosion resistance and better mechanical properties than the duplex stainless steel 2205 (S31803). Mainly used for chemical processing, petrochemicals and subsea equipment. It has strong resistance to chloride corrosion, high thermal conductivity and low thermal expansion coefficient. Higher chromium, molybdenum, and nitrogen content have high resistance to pitting, crevice corrosion, and general corrosion. Its impact strength is also very high, 2507 alloy is not suitable for use in temperatures above 570 °C, long-term in such an environment, its toughness will be reduced. Name S32750, SAF2507, F53, national standard 00Cr25Ni7Mo4N.

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