Duplex Stainless Steel Flanges

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Many types of steel flanges are offered byKVN Steels one of the most used flanges areDuplex Steel Flanges. They are the famous manufacturer, supplier and stockiest of all types of steel flanges in all over the world. Stainless steel is highly durable and low-cost alloy. The flanges of Stainless steel are used widely as they have the properties which make it the unbeaten quality material.

Country Of Origin : India

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    Duplex Steel Flanges are hardened alloys and also exceptionally corrosion-resistant. Microstructures of this steel are consist of Ferrite and Austenite phases mixture. As a result, they consist of the features of both ferritic and austenitic stainless Steel. It has a high-strength and excellent resistance to corrosion. Duplex Stainless Steel Flangeshave excellent intergranular corrosion. It has an outstanding high resistance to corrosion cracking stress even in sulfide and chloride environments.

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    At the temperatures, more than 300 degree Celsius Duplex Steel Flanges is still protected from the corrosion causes embrittlement. Duct ability is excellent in low temperatures also. The fabrication work is done only through the tools assigned for materials of stainless steel. Before they used must be cleaned properly. It is done to save the stainless steel from the cross-contamination from the corroded metals.

    These flanges can be hardened by the treatment of heat. Duplex Steel Flanges are application industries are; They are used in off-shore oil drilling companies, used in Aircraft exhaust manifolds, uses in petrochemicals, in power generation, in gas processing, in pharmaceuticals, uses in specialty chemicals, spiral welded tube for burner pipes and fuels, pharmaceutical equipment, heat exchangers, and also in seawater equipment. Double Steel Flanges are available in the many designs like slip-on, weld-neck, blind, threaded, lap joint, and socket weld.

    The test certificate is according to the EN 10204/31B. Material testing includes intergranular corrosion (IGC) test, flaring test, pitting resistance test, micro, and macro test, flattening test, positive material identification test, chemical analysis, hardness test, and mechanical testing such as tensile of area. The packaging is in wooden pallets and cases to avoid the damages of the material during its delivery and to maintain the trust of the customers.

    S31803/S32205 Duplex Stainless Steel Flanges Equivalent Grades

    STANDARD WNR.
    Duplex S31803 / S32205 1.4462

    Chemical Composition of Duplex Steel S31803/S32205 Flanges

    Grade Common Name C% Mn% Si% P% S% Cr% Ni% Mo% N%
    2205 S31803 0.030 2.00 1.00 0.030 0.020 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20
    2205 S32205 0.030 2.00 1.00 0.030 0.020 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20

    Mechanical Properties Of Duplex Steel S31803/S32205 Flanges

    Tensile strength 620MPa min Density 7,805kg/m3
    Yield strength 450MPa mi Elastic modulus 200GPa

    Physical Properties of S31803/S32205 Duplex Steel Flanges

    Elongation 25% min Mean coefficient of thermal expansion
    Brinell hardness 293 HB max 0-100oC 13.7m/m/oC
    Rockwell hardness 31 HR C max 0-315oC

    Specification of Duplex Stainless Steel S31803/S32205 Flanges:

    Duplex Stainless Steel Flanges Specification :ASTM A182 / ASME SA182
    Dimension Standard :ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
    Standard :ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
    Size :1/2 (15 NB) to 48" (1200NB)



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