• S31803 Stainless Steel
  • S31803 Stainless Steel
  • S31803 Stainless Steel
  • S31803 Stainless Steel
  • S31803 Stainless Steel

S31803 Stainless Steel Features

  • Good Abrasion resistance
  • High Strength
  • Excellent Toughness
  • Cost Effective
  • Corrosion Resistance
  • Good fatigue resistance
  • Low maintenance

Professional S31803 Stainless Steel Manufacturer

S31803 is a kind of duplex stainless steel. It is typically utilized in different industrial uses. It has good machinability, meaning it can be easily shaped and machined into complex shapes & designs.

S31803 is also resistant to both high and low temperatures. Thus, it is perfect for utilization in a broad range of harsh applications.

At TuoLian, we only use high-quality raw materials to manufacture our steel products. We perform strict quality control in every stage of production to ensure 100% quality S31803 stainless steel.

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Wide Application

  • Chemical processing
  • Desalination plants
  • Food processing
  • Medical industry
  • Marine industry
  • Oil and gas industry
S31803 Stainless Steel

Chemical Composition

Element Percentage (%)
(Cr) 21.0 – 23.0
(Ni) 4.5 – 6.5
(Mo) 2.5 – 3.5
(Mn) 2.0 max
(Si) 1.0 max
(C) 0.03 max
(N) 0.08 – 0.20
(P) 0.03 max
(S) 0.02 max

Mechanical Properties

Mechanical Property Value
Tensile Strength 620 MPa (90 ksi)
Yield Strength 450 MPa (65 ksi)
Elongation 25%
Hardness (Brinell) Max 290 HB

Physical Properties

Property Value
Density                                         7.805 g/cm3 (0.281 lb/in3)
Melting Range                                 1350-1450°C (2462-2642°F)
Thermal Conductivity 16.3 W/mK (9.5 BTU/hr-ft-°F) at 100°C (212°F)
Electrical Resistivity         0.8 μohm-cm (0.0000315 ohm-in) at 20°C (68°F)
Magnetic Permeability 1.02
Modulus of Elasticity 200 GPa (29.0 x 106 psi)
Poisson’s Ratio             0.3
Specific Heat Capacity 460 J/kg-°C (0.11 BTU/lb-°F) at 20°C (68°F)
Coefficient of Thermal Expansion 13.7 μm/m°C (7.6 μin/in-°F) from 0-100°C (32-212°F)

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S31803 Stainless Steel Alloy Designation

UNS S31803 

ASTM A182/A240

EN 1.4462 

Duplex 2205 


 Supplied Forms

  • Sheets and Plates
  • Bars and Rods
  • Pipes and Tubes
  • Fittings and Flanges
  • Welding Consumables, etc.
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One Stop Stainless Steel Supply.

Whether you need stainless steel materials for your business or fabrication projects, TuoLian is your best supplier. You can find all types, grades, and thicknesses based on your needs. Guaranteed that we provide the best quality at a reasonable cost.
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