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321 Stainless Steel Sheet & Coil

Properties

• General
• Chemical
• Physical
• Mechanical

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Stainless Steels Chromium-Nickel-Molybdenum

Types 321 (S32100), 347 (S34700)

Typical Physical Properties

Grade	Density		Modulus of Elasticity in Tension	Melting Range
	g/cm3	lb/in3
321	7.92	0.286	28 x 106 psi 193 GPa	1398-1446°C 2550-2635°F
347	7.96	0.288	28 x 106 psi 193 GPa	1398-1446°C 2550-2635°F

Mean Coefficient of Linear Thermal Expansion

Temperature Range		Coefficients
°C	°F	cm/cm/°C	in/in/°F
20-100	68-212	16.6 x 10-6	9.2 x 10-6
20-600	68-912	18.9 x 10-6	10.5 x 10-6
20-1000	68-1832	20.5 x 10-6	101.4 x 10-6

Thermal Conductivity

Temperature Range		W/m·K	Btu · in / hr · ft2 · °F
°C	°F
20-100	68-212	16.3	112.5
20-500	68-932	21.4	147.7

Specific Heat

Temperature Range		J/kg K	Btu/lb · °F
°C	°F
0-100	32-212	500	0.12

Magnetic Permeability

• H/m Annealed
• 1.02 Max

Electrical Resistivity

Temperature Range		microhm·cm
°C	°F
20	68	72
100	213	78
200	392	86
400	752	100
600	1112	111
800	1472	121
900	1652	126

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