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The physical properties and material properties of S32760 super duplex stainless steel

Views:51     Author:Site Editor     Publish Time: 2021-04-25      Origin:Site

1. Overview of S32760 (F55, 1.4501) super duplex stainless steel:


S32760 (F55, 1.4501) is a high-alloy super duplex stainless steel, mainly used in various strong corrosive environments. S32760 dual-phase steel has strong strength and corrosion resistance, and is mainly used in chemical processing, petrochemical and subsea equipment. It has strong resistance to chloride corrosion, high thermal conductivity and low thermal expansion coefficient. The high content of chromium, molybdenum and nitrogen makes it highly resistant to pitting corrosion, crevice corrosion and other corrosion. The excellent comprehensive properties of S32760 dual-phase steel are better than general dual-phase steels, such as 2205, S31803, etc.


S32760 dual-phase steel can withstand various inorganic acids and organic acids. At the same time, its added copper element makes it have excellent resistance to non-oxidizing acid corrosion. S32760 is also resistant to strong alkali corrosion, but S32760 dual-phase steel is not suitable for long-term working temperature. Use at temperatures above 300°C, because the toughness of the material will decrease significantly above this temperature.


2. The physical properties of S32760 (F55, 1.4501) super duplex stainless steel:


  • Density of S32760 (F55, 1.4501) dual-phase steel: 8.0g/cm3,

  • S32760 (F55, 1.4501) dual-phase steel melting point: 1400-1450°C,

  • S32760 (F55, 1.4501) dual-phase steel specific heat (J/kg・K): 460,

  • S32760 (F55, 1.4501) dual-phase steel resistivity (μΩ・cm): 90.0,

  • S32760 (F55, 1.4501) dual-phase steel thermal conductivity (W/m・K): 12.8,


3. Mechanical properties of S32760 (F55, 1.4501) super duplex stainless steel:


  • S32760 (F55, 1.4501) dual-phase steel mechanical properties: tensile strength: σb≥750Mpa,

  • S32760 (F55, 1.4501) dual-phase steel yield strength σb≥550Mpa:

  • S32760 (F55, 1.4501) dual-phase steel elongation: δ≥45%,

  • S32760 (F55, 1.4501) dual-phase steel hardness: 270 (HB)


4, S32760 (F55, 1.4501) super duplex stainless steel material characteristics:


  • Reliable corrosion resistance of S32760 (F55, 1.4501) duplex steel (pitting resistance coefficient (PREN≥40)*,

  • S32760 (F55, 1.4501) dual-phase steel has excellent resistance to chloride ion pitting and crevice corrosion,

  • S32760 (F55, 1.4501) dual-phase steel has excellent sulfuric acid resistance,

  • S32760 (F55, 1.4501) dual-phase steel has excellent stress corrosion cracking resistance under chloride-containing and acidic (such as hydrogen sulfide) medium environments,

  • S32760 (F55, 1.4501) dual-phase steel is resistant to erosion corrosion and corrosion fatigue,

  • S32760 (F55, 1.4501) dual-phase steel has excellent mechanical properties and good weldability.


5. The main application of S32760 (F55, 1.4501) super duplex stainless steel:


S32760 (F55, 1.4501) duplex steel main applications: neutral chloride environment, oil refining industry, petrochemical and chemical industry, chemical industry pipelines, oil and gas industry, pulp and paper industry, fertilizer industry, urea industry, phosphate fertilizer Industry, seawater environment, energy and environmental protection industry, light industry and food industry, food and pharmaceutical industry equipment, high-strength structural parts, submarine pipelines, smoke machine desulfurization, permeation desalination equipment, sulfuric acid plants, marine engineering fasteners, etc.


6. Variety specifications and supply status of S32760 (F55, 1.4501) super duplex stainless steel:


  • Variety classification: S32760 seamless pipe, S32760 steel plate, S32760 round steel, S32760 forgings, S32760 flange, S32760 ring, S32760 welded pipe, S32760 steel strip, S32760 wire and S32760 matching welding materials.

  • Delivery status: seamless pipe: solid solution + acid white, length can be set; plate: solid solution, pickling, trimming; welded pipe: solid solution acid white + RT% flaw detection, forging: annealing + car polish; Bars are forged and rolled, surface polished or car polished; strips are delivered after cold rolling, solid solution soft state, and deoxidized; wire rods are finely ground in solid solution pickled disk or straight strips, solid solution straight strips Delivery in light state.


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