310H (UNS S31009) Stainless Steel Data Sheet

310H (UNS S31009) Stainless Steel Data Sheet

310H (Alloy 310H UNS S31009) Stainless Steel Data Sheet General Properties Alloy 310H (UNS S31009) has a carbon content restricted to exclude the lower end of the 310 range. This makes 310H the grade of choice for high temperature applications. This steel has good resistance to oxidation at...
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310H (Alloy 310H UNS S31009) Stainless Steel Data Sheet

General Properties

Alloy 310H (UNS S31009) has a carbon content restricted to exclude the lower end of the 310 range. This makes 310H the grade of choice for high temperature applications. This steel has good resistance to oxidation at temperatures of up to 1040°C (1904°F) in intermittent service and 1150°C (2102°F) in continuous service. It is widely used in environments where sulfur dioxide gas is present at high temperatures; however it is recommended that this steel should not be continuously used at 425-860°C (797-1580°F) range due to carbide precipitation.


Chemical Composition

ElementContent (%)

Iron, Fe

49.075-45.865

Chromium, Cr

24-26

Nickel, Ni

19-22

Manganese, Mn

2

Silicon, Si

0.75

Phosphorous, P

0.045

Carbon, C

0.040-0.10

Sulfur, S

0.03


Mechanical Properties

PropertiesMetricImperial

Tensile strength

515 MPa

74694 psi

Yield strength

205 MPa

29732 psi

Modulus of elasticity

200 GPa

29000 ksi

Shear modulus

77.0 GPa

11200 ksi

Poissons ratio

0.3

0.3

Elongation at break (in 50 mm)

40%

40%

Hardness, Rockwell B

95

95

Hardness, Brinell

217

217


PHYSICAL PROPERTIES

QuantityValueUnit

Thermal expansion

16 – 17

e-6/K

Thermal conductivity

16 – 16

W/m.K

Specific heat

500 – 500

J/kg.K

Melting temperature

1370 – 1400

°C

Service temperature

0 – 500

°C

Density

8000 – 8000

kg/m3

Resistivity

0.7 – 0.7

Ohm.mm2/m


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