Alloy 310 / 310S / 310H Stainless Steel

Alloy 310 / 310S / 310H Stainless Steel

Alloy 310 / 310S / 310H Stainless Steel General Properties Alloy 310 (UNS S31000) is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. The alloy resists oxidation up to 2010oF (1100oC) under mildly cyclic conditions. Because of its high...
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Alloy 310 / 310S / 310H Stainless Steel

General Properties

Alloy 310 (UNS S31000) is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. The alloy resists oxidation up to 2010oF (1100oC) under mildly cyclic conditions.

Because of its high chromium and moderate nickel content, Alloy 310 is resistant to sulfidation and can also be used in moderately carburizing atmospheres.


The more severe carburizing atmospheres of thermal process equipment usually require nickel alloys such as 330 (UNS N08330). Alloy 310 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced. Alloy 310 also finds usage in cryogenic applications with low magnetic permeability and toughness down to -450oF (-268oC). When heated between 1202 – 1742oF (650 – 950oC) the alloy is subject to sigma phase precipitation. A solution annealing treatment at 2012 – 2102oF (1100 – 1150oC) will restore a degree of toughness.


Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)

Element310310S310H
Cr24.0 min.-26.0 max.24.0 min.-26.0 max.24.0 min.-26.0 max.
Ni19.0 min.-22.0 max.19.0 min.-22.0 max.19.0 min.-22.0 max.
C0.250.080.40 min. - 0.10 max.
Mn2.002.002.00
P0.0450.0450.045
S0.0300.0300.030
Si1.501.500.75
IronBalanceBalanceBalance


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