Plates made of duplex stainless steel have chromium concentrations that are quite high (between 18 and 28 percent), and nickel concentrations that are either low or moderate (between 1.5 percent and 8 percent ). The high corrosion resistance and excellent mechanical properties of duplex stainless steels can be attributed to their chemical composition and balanced (duplex) microstructure, which consists of approximately equal volume percentages of ferrite and austenite. Both of these factors contribute to the material's duplex nature. LDX 2101® is a low nickel, nitrogen-enhanced lean duplex stainless steel. It has a corrosion resistance that is comparable to that of 304, but it possesses a significantly better mechanical strength.

duplex steel plate


This makes it possible to utilise it in narrower cross-sections, which results in cost savings for the end customer. The most frequent grades of alloy are number 2304 and number 2205. Both of them have an exceptional resistance to cracking brought on by chloride stress-corrosion. When compared with austenitic stainless steels from the 300 series or standard duplex alloys, "super" duplex grades offer superior resistance to pitting and crevice corrosion. This is because the chromium, molybdenum, and nitrogen content of these materials is significantly higher than average. The "super" duplex grade with the highest frequency of use is alloy 2507.

Standard Specification For Duplex/Super Duplex Plate :

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