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Alloy 310S

An austenitic chromium-nickel grade, Alloy 310S displays excellent oxidation resistance up to 1094°C

Alloy 310S displays excellent resistance to oxidation under mildly cyclic conditions. As a result of its high chromium and nickel content, Alloy 310S has good resistance to sulphidation and other forms of hot corrosion.


Product forms Size range from Size range to
Alloy 310S pipe 0.5 in 8 in
Alloy 310S round bar 8 mm 57.15 mm
Alloy 310S sheet & plate 1.2 mm 50.8 mm

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    Round Bar

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    Sheet & Plate

Chemical Analysis

% Cr Ni C Si Mn P S Mo Cu Fe
Min 24 19 - - - - - - - -
Max 26 22 0.08 0.75 2 0.045 0.03 0.75 0.5 Balance


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Perfect for applications in the Thermal Processing industry

Alloy 310S can be used in a variety of applications including:

  • Flare tips
  • Fluidized bed coal combustors
  • Radiant tubes
  • Tube hangers for petroleum refining and steam boilers
  • Coal gasifier internal components
  • Thermowells and refractory anchor bolts
  • Burners, combustion chambers
  • Retorts, muffles, annealing covers
  • Cryogenic structures

About Alloy 310S

Alloy 310S is widely used in moderately carburizing atmospheres such as those encountered in petrochemical environments. The more severely carburizing atmospheres of industrial heat treating furnaces require RA330® or RA333®. Alloy 310S is not suggested for the severe thermal shock of repeated liquid quenching.

The grain size and carbon content meets both 310S and 310H requirements. Alloy 310S is often used at cryogenic temperatures, with excellent toughness and low magnetic permeability. Alloy 310S has good machinability and is readily fabricated.

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7.86 g/cm³
Melting range:
1354 – 1401.7 °C


UNS Number:
Werkstoff Number:
ASTM A240, A276, A312, A479, AMS 5521, 5651
Download the Alloy 310S Data Sheet Download

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