Stainless Steel – Grade 310S (UNS S31008) in China

Chemical Composition

The following table shows the chemical composition of grade 310S stainless steel.

Element	Content (%)
Iron, Fe	54
Chromium, Cr	24-26
Nickel, Ni	19-22
Manganese, Mn	2
Silicon, Si	1.50
Carbon, C	0.080
Phosphorous, P	0.045
Sulfur, S	0.030

Physical Properties

The physical properties of grade 310S stainless steel are displayed in the following table.

Properties	Metric	Imperial
Density	8 g/cm3	0.289 lb/in³
Melting point	1455°C	2650°F

Mechanical Properties

The following table outlines the mechanical properties of grade 310S stainless steel.

Properties	Metric	Imperial
Tensile strength	515 MPa	74695 psi
Yield strength	205 MPa	29733 psi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation	40%	40%
Reduction of area	50%	50%
Hardness	95	95

Thermal Properties

The thermal properties of grade 310S stainless steel are given in the following table.

Properties	Metric	Imperial
Thermal conductivity (for stainless 310)	14.2 W/mK	98.5 BTU in/hr ft².°F

Other Designations

Other designations equivalent to grade 310S stainless steel are listed in the following table.

AMS 5521	ASTM A240	ASTM A479	DIN 1.4845
AMS 5572	ASTM A249	ASTM A511	QQ S763
AMS 5577	ASTM A276	ASTM A554	ASME SA240
AMS 5651	ASTM A312	ASTM A580	ASME SA479
ASTM A167	ASTM A314	ASTM A813	SAE 30310S
ASTM A213	ASTM A473	ASTM A814	SAE J405 (30310S)