Duplex Stainless Steel

Duplex Stainless Steel is Dual Phase Stainless Steel with Austenitic & Ferritic phase in equilibrium. Duplex Steel exhibits properties of both Austenitic & Ferritic composition offering great mechanical strength & corrosion resistance. Duplex Alloy 2205 is primary grade of Duplex Stainless Steel use.d throughout industry. UNS S31803 / S32205 / DIN EN 1.4462 are common Equivalent of Duplex Stainless Steel. Duplex Stainless Steel is very versatile material to be available in all raw material form. FerroBend is Elite Manufacturer & Supplier of Duplex Stainless Steel Products – Pipes, Tubes, Pipe Fittings, Tube Fittings, Forgings, Flanges, Valves, Strainers, Expansion Joints, etc.

About Duplex Stainless Steel

Duplex Stainless Steel was developed some 40 years back but its importance grew some 20 years ago. Duplex Stainless Steel is low cost alternative to Stainless Steel and other Nickel Chrome Corrosion resistant alloys. Duplex Stainless steel will replace conventional Stainless Steel in many applications.

Alloy 2205 is the most typical Duplex Steel Grades. UNS S31803, UNS S32205, UNS S32304 are common Duplex grade UNS Designation.

Duplex 2205Duplex S31803Duplex 32205Duplex F51 / Duplex F60Duplex 1.4462

Duplex Stainless Steel Products includes

  • Pipes, Tubes
  • Pipe Fittings, Tube Fittings, Forged Fittings
  • Flanges, Fasteners
  • Valves, Strainers
  • Expansion Joints, etc.

Duplex Stainless Steel is widely used in

  • Sea Water Desalination Plants
  • Fuel Gas Cleaning
  • Chemical Process Piping
  • Paper & Pulp Process Piping
  • Pharmaceutical Equipment, etc.

Some common Duplex Stainless Steel Specifications are

  • ASTM A182

  • ASTM A351

  • ASTM A790

  • ASTM A815


Duplex Stainless Steel Equivalent


Trade Name UNS Designation EN DIN Number EN Name DIN Name SWEDISH AFNOR BRITISH JIS
2205 UNS S32205 & UNS S31803 1.4461 X2CrNiMoN 22-5-3 X2CrNiMoN 22 5 3 SS 2377 Z2.CND22.05.03 BS318S13 SUS 329J3L
2304 UNS S32304 1.4361 X2CrNiN 23 4 -- SS 2327 Z 2 CN 23.04AZ -- --

Duplex Stainless Steel Chemical Composition

ElementMin, %Max, %
Carbon0.000.03
Manganese0.002.00
Phosphorus0.000.03
Sulphur0.000.02
Silicon0.001.00
Copper0.000.00
Nickel4.506.50
Chromium21.023.0
Molybdenum2.503.50
Nitrogen0.080.20

Duplex Stainless Steel Mechanical Properties

Parameter Value
Yield 0.2 % ( Mpa/Nmm 2 ), Min 450
Tensile ( Mpa/Nmm2), Min 620
*Elongation (% in 50MM ), Min 25
Reduction Area(%), Min 45
Hardness ( BHN ), Max -



Duplex Stainless Steel Specifications

Duplex Stainless Steel Forged Flanges & Fittings

Duplex Stainless Steel Cast Valves

Duplex Stainless Steel Tube / Tubing

Duplex Stainless Steel Seamless & Welded Pipes

Duplex Stainless Steel Butt Weld Pipe Fittings

Duplex Stainless Steel Cast Valves

Duplex Stainless Steel Fusion Welded Pipes

Duplex Stainless Steel Cast Valves

 

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