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Grade UNS S31803 is termed as a duplex class due to its mixed Austenitic-ferritic microstructure. Duplex stainless steel alloys have an equal proportion of both austenite and ferrite, which is why Duplex Steel Fittings exhibit properties prominent to both classes. Duplex Steel Buttweld Fittings demonstrate better localized corrosion resistance in comparison to both grade 316L and 317L. Hence these duplex steel fittings are used in applications involving several key industrial fields such as chemical plants, seawater pump, seawater desalination plant, and so on. Werkstoff No 1.4462 Duplex Steel Pipe Fittings have a high resistance to intergranular corrosion, especially in chloride and sulphide containing environments. Usually, a regular steels grade would be susceptible to getting degraded in these conditions, unlike Duplex Stainless Steel Fittings, which exhibit very high resistance to stress related corrosion cracking.
Two of the most important characteristics of duplex grade is its superior corrosion resistance as well as high tensile strength.
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What Is Duplex Steel Fittings?
UNS S31803 Duplex Steel Elbow fittings in most cases, tend to be tougher when compared to ferritic stainless steel. Whereas the mechanical strengths of duplex stainless steel fittings can in some cases for e.g. UNS S31803 could be as much as two times more than that of conventional austenitic stainless steels. The high chromium content present in the alloy is what protects the Duplex Steel Forged Fittings against corrosion, generally causes embrittlement at temperatures exceeding 300°C.
Duplex Steel Buttweld Fittings Specification
Standard Specification :
Duplex Steel Fittings
Coating Fitting Faces :
Cold and Hot Dip Galvanized, Yellow Transparent, Oil Black Paint, Zinc Plated, Anti-rust Paint
2000#, 3000#, 6000#, 9000#
Nuclear Power Plant
Water Pipeline Industry
Oil And Gas Industry
Natural Gas Industry