310S Stainless Steel

310S has excellent resistance to oxidation under constant temperatures to 2000°F. Cyclic conditions reduce its oxidation resistance, and a maximum operating temperature of 1900°F is generally recommended if cycling is involved.  

Having a lower coefficient of expansion than most 300 stainless steels, 310S may be used in operations involving moderately severe thermal cycling, such as rapid air cooling.  It is not usually recommended for liquid quenching.  Although 310S has less resistance to absorption of carbon and nitrogen than the higher alloys such as 330 and 333, it is widely used in moderately carburizing atmospheres such as encountered in petro-chem plants.

Because of ts high chromium and medium nickel contents, 310S may be used in atmospheres containng moderate amounts of sulfur.

Availability - Stainless Steel 310S 

Seamless Pipe 1/2" - 8"

Weld Pipe 8" - 12"

Butt-Weld Fittings 1/2" - 8"


Specifications - Stainless Steel 310S


A312, A403, A182


SA312, SA403, SA182




Chemical Composition - Stainless Steel 310S

C Cr Mn Mo Ni P S Si
Max   Max Max    Max Max Max
0.08% 24% - 26% 2.0% 0.75% 19% - 22% 0.045% 0.03% 0.75%


Design Features - Stainless Steel 310S

  • Austenitic stainless steel with excellent high temperature oxidation resistance.
  • Good for continuous exposure to 2100°F, intermittent service to 1900°F.
  • Better elevated temperature creep strength than the 18-8 grades.
  • Good resistance to both carburizing and reducing environments.
  • General corrosion resistance better than Types 304 and 309.
  • May be susceptibe to chloride stress corrosion cracking. 
  • Ease of fabrication.

Typical Applications - Stainless Steel 310S

  • Sulfur bearing gas atmospheres
  • Molten salt applications
  • Heat exchangers
  • Heat recuperator tubing

Tensile Requirements - Stainless Steel 310S

Tensile Strength (KSI): 75

Yield Strength (KSI): 30

KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

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