Dual phase steel

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Dual-phase steel (DPS) is a high-strength steel that has a ferrite and martensitic microstructure. DPS starts as a low or medium carbon steel and is quenched from a temperature above A1 but below A3 on a continuous cooling transformation diagram.
We can produce and deliver nearly any duplex material requirement in pipe, tube or fittings.
Nature:

It is mainly composed of ferrite and martensite steel, which can be low-carbon steel or low alloy steel by the treatment or control rolling of the critical region. The type of steel has high strength and high ductility, good co-ordination. Now, it has become a high strength, good formability new stamping steel successful for the auto industry.

Through proper control of chemical composition and heat treatment process, both the advantages of ferritic stainless steel and austenitic stainless steel duplex stainless steel due to the characteristics of the two-phase structure, it austenitic stainless steel with excellent toughness and weldability and iron ferritic stainless steel with high strength and resistance to chloride stress corrosion combined with superior performance of duplex stainless steel welding of structural materials has developed rapidly since the 1980s has become a martensitic, Austria steel type's size and ferritic stainless steel side by side.

Special Piping Materials has always been at the forefront of the industry due to the company’s determination to supply its clients with the materials grades that best suit their requirements.


MATERIALS
An example of the range of materials we supply are as follows:
  • Super Duplex (S32760 and S32750 / 2507)
  • Duplex (S31803 / 2205)
  • 6% Moly (S31254)
  • Nickel Alloys (Alloy 400, 625, 800, 825, etc)
  • Stainless Steels (316L, 304L, 904L, 310, 321, etc.)
Duplex becomes brittle at extreme temperatures so its use is normally restricted to a maximum temperature of 300 degrees and shows signs of embrittlement at –50 degrees.
The Benefits of using Duplex Stainless Steel Pipe:
  • Stronger than 300 series stainless steel which also brings weight advantages
  • High resistance to pitting, crevice corrosion and stress corrosion cracking
  • Higher heat conductivity and lower thermal expansion than austenitic steels
Duplex Stainless Steel Pipe is used in:
  • Pipes for production and transportation of oil and gas
  • Structural and mechanical components
  • Heat exchangers
  • Cooling pipes

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