Product Information

Composition of 310S/310H Pipe and Tubing

UNS DesignationS31008S31009
Carbon (C) Max.0.080.04– 0.10
Manganese (Mn) Max.2.002.00
Phosphorous (P) Max.0.0450.045
Sulphur (S) Max.0.0300.030
Silicon (Si) Max.1.001.00
Chromium (Cr)24.0–26.024.0–26.0
Nickel (Ni)19.0–22.019.0–22.0
Molybdenum (Mo)
Nitrogen (N)
Iron (Fe)Bal.Bal.
Other Elements

Physical Properties of 310S/310H Alloys in the Annealed Condition at -20°F to +100°F

      Tensile Strength Yield Strength            
Alloy UNS Designation Spec. psi MPa ksi psi MPa ksi Elongation in 2 inches (min.) % Grain Size Req. Maximum Hardness Modulus of Elasticity (x106 psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity(BTU-in/ft2-h-°F)
310S S31008 A249, A312 75,000 515 75 30,000 205 30 35 90 Rb 29.0 9.2 116
310H S31009 A249, A312 75,000 515 75 30,000 205 30 35 6 or coarser 90 Rb 29.0 9.2 116

310S/310H Product Range

Alloy UNS Designation Werkstoff NR. Specifications*
310S S31008 1.4845 A/SA249, A/SA312
310H S31009 A/SA249, A/SA312

*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.