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Alloy 310S

An austenitic chromium-nickel grade, Alloy 310S (1.4845) displays excellent oxidation resistance up to 1094°C

Alloy 310S (1.4845) 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.


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Alloy 310S pipe0.5 in4 in GET A QUOTE
Alloy 310S round bar8 mm57.15 mm GET A QUOTE
Alloy 310S sheet & plate1.2 mm50.8 mm GET A QUOTE

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Sheet & Plate

Chemical Analysis



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Perfect for applications in the Thermal Processing industry

Alloy 310S can be used in a variety of applications, here are just a few examples:

  • 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:
S31008, S31009
ASTM A240, A276, A312, A479, AMS 5521, 5651
Download the Alloy 310S Data Sheet Download

FAQs & Resources

Stainless steel is the generic name of different grades of steels (containing low carbon and iron), used primarily because of their corrosion resistance. All stainless steels share a minimum percentage of 10.5% chromium element. Chromium (Cr), usually a deciding factor, nickel and molybdenum are commonly added to steels to improve their corrosion resistant and make them ‘stainless’. Most of the stainless steel grades will have a UNS number that start off with letter ‘S’ such as UNS S32100 (Alloy 321) and UNS S31008/S31009 (Alloy 310/310S).

There are some stainless steel grades that are engineered to be used specifically for high temperature applications. Some can be used up to 1100°C. The choice of grade depends on the following factors:

  • Maximum operating temperature
  • Holding time and cyclic nature of process
  • Type of atmosphere (oxidising, reducing, sulphidising, nitriding, carburising etc.)
  • Required strength and creep rupture properties

Increasing amount of Chromium and Silicon contributes to greater oxidation resistance. For example, 310S with a nominal Chromium content of 25% can be used at temperatures up to 1100°C. Nickel, on the other hand, is added for greater carburisation resistance or lowered to enhance the resistance to sulphidation attack.

  • Oxidation resistance to 1100°C
  • Moderate high strength at elevated temperatures
  • Resistance to hot corrosion
  • Strength and toughness at cryogenic temperatures
  • Flare tips
  • Fluidized bed coal combustors
  • Tube hangers for petroleum refining and steam boilers
  • Coal gasifier internals & thermowells
  • Radiant tubes
  • Refractory anchor bolts
  • Retorts, muffles and annealing covers
  • Burners & combustion chambers
  • Cryogenic structures

Request a Quote

Fill in our online form to get a fast quote. Got a technical question? Contact us on techsales@neonickel.com or for more general enquiries please email us at enquiries@neonickel.com