Alloy 310 • UNS S31000 • WNR 1.4845

A heat resisting stainless steel with high resistance to oxidation scaling and has high strength at elevated temperatures. This is combined with better creep properties at temperature and 310 stainless is very tough and ductile. 310 stainless has good resistance to oxidation and may be used in continuous service up to 1140ºC provided reducing sulphur gases are not present. With its high chromium content 310 stainless offers good corrosion resistance to increase high temperature properties.

Available tube product forms

Typical Applications

Typical manufacturing specifications

  • ASTM A632
  • ASTM A213
  • ASTM A312
  • Also individual customer specifications.

Industries predominantly using this grade            

Technical Data

Mechanical Properties

Temper Annealed
Tensile Rm 76 ksi (min)
Tensile Rm 517 MPa (min)
R.p. 0.2% Yield 31 ksi (min)
R.p. 0.2% Yield 207 MPa (min)
Elongation (2” or 4D gl) 40 % (min)


Physical Properties (Room Temperature)

Specific Heat (0-100°C) 500 J.kg-1.°K-1
Thermal Conductivity 14.2 W.m -1.°K-1
Thermal Expansion 15.9 mm/m/°C
Modulus Elasticity 20 GPa
Electrical Resistivity 72 μohm/cm
Density 7.75 g/cm3


Chemical Composition (% by weight)

Element Min Max
C - 0.25
Mn - 2
Ni 19 22
Cr 24 26
Si - 1.5
P - 0.045
S - 0.03
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