304 Physical Properties

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304 Stainless Steel Density:
0.285 lb/in³ (7.93kg/dm³)

Modulus of Elasticity in Tension:
29 x 106 psi (200 GPa)

Linear Coefficient of Thermal Expansion:

Temperature RangeTemperature RangeCoefficientsCoefficients
°F°Cin/in/°Fcm/cm/°C
68 – 21220 – 1009.2 x 10-616.6 x 10-6
18 – 160020 – 87011.0 x 10-619.8 x 10-6

Thermal Conductivity:

Temperature Range Temperature Range Coefficients Coefficients
°F °C in/in/°F cm/cm/°C
68 – 212 20 – 100 9.2 x 10-6 16.6 x 10-6
18 – 1600 20 – 870 11.0 x 10-6 19.8 x 10-6

The overall heat transfer coefficient of metals is determined by factors in addition to the thermal conductivity of the metal. The ability of the 18-8 stainless steel grades to maintain clean surfaces often allows better heat transfer than other metals having higher thermal conductivity.

Specific Heat:

°F°CBtu/lb/°FJ/kg/K
32 – 2120 – 1000.12500

Magnetic Permeability:
The 18-8 alloys are generally non-magnetic in the annealed condition with magnetic permeability values typically less than 1.02 at 200H. Permeability values will vary with composition and will increase with cold work.

Percent Cold Work Magnetic Permeability
304 304L
0 1.005 1.015
10 1.009 1.064
30 1.163 3.235
50 2.291 8.480

Physical Properties of Stainless SteelGeneral Properties
Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Welding
Heat Treatment
Cleaning
304/304L/304LN/304H Tubing and Pipe

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