3RE60 Duplex Stainless Steel

Standards:3RE60 ASTM A789 / A790            Grade(UNS):S31500           Type:Duplex Stainless steel

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3RE60 Duplex Stainless Steel Characteristics

3RE60 is a special duplex stainless steel with chloride ion stress corrosion resistance by adding 0.05% – 0.10% nitrogen on the basis of duplex stainless steel.

It has high corrosion resistance and high mechanical strength. It has good welding performance and physical properties. It has high stress corrosion cracking ability in the environment containing CI.

Its corrosion resistance is equivalent to that of 316L

This duplex stainless steel is often used in refineries, chemical plants and other pulping industries

3RE60 duplex stainless steel

Chemical Composition​


Heat treatment

Fast cooling at 920 ~ 1150 ℃ for solid solution

3RE60 Standards

  • GB-T standard digital brand: S21953
  • New brand of GB-T standard: 022Cr19Ni5Mo3Si2N
  • Old brand of GB-T standard: 00Cr18Ni5Mo3Si2
  • ASTM standard: S31500
  • UNS standard: 3RE60
  • JIS standard: dp11
  • DIN standard: 1.4424
  • EN standard: X2CrNiMOsi18-5-3


  • Good weldability
  • Good corrosion resistance
  • Excellent mechanical strength
  • Good stress resistance in CI environment
  • High hardness
  • High strength


  • Refinery
  • Chemical plant
  • Pulping industry
  • Heat exchanger

Mechanical properties

Yield strength (Rp0.2 / MPa)≥683
Tensile strength (Rm / MPa)≥881
Impact (Kv / J)22
Elongation (A / %)23
Density7.8 g/cm³
Hardness (HB)324

Our duplex stainless steel grades

Duplex stainless steel is a kind of stainless steel composed of ferrite and austenite. The ferrite content is about 50%, and the austenite content is about 50%. This kind of steel has the characteristics of both austenitic stainless steel and ferritic stainless steel.

Duplex stainless steel pipe is one of the main products of our company. It has good corrosion resistance and welding performance. Widely used in steel, smelting, petroleum, chemical, marine equipment and other industries.

Because of the high strength of duplex stainless steel, it can save material, such as reducing the wall thickness of the pipe.
  1. Oil pipe in oil and natural gas industry
  2. Crude oil desalting
  3. Sulfur-containing gas purification
  4. Wastewater treatment equipment in refinery
  5. Cooling system using brackish water or chlorine solution
  6. Read More

Duplex stainless steel has almost twice as much yield strength as austenitic stainless steel, excellent corrosion resistance and weldability, and is widely used in various fields. Read more about the properties of duplex stainless steel

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