Density:
0.285 lb/in3 (7.90 g/cm3)
Modulus of Elasticity in Tension:
29 x 106 psi (200 GPa)
Linear Coefficient of Thermal Expansion:
| Temperature Range |
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 |
Thermal Conductivity:
| Temperature Range |
Btu/hr/ft/°F |
W/m/K |
| °F |
°C |
| 212 |
100 |
9.4 |
16.3 |
| 932 |
500 |
12.4 |
21.4 |
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 pipe grades to maintain clean surfaces often allows better heat transfer than other metals having higher thermal conductivity.
Specific Heat:
| °F |
°C |
Btu/lb/°F |
J/kg/K |
| 32-212 |
0-100 |
0.12 |
500 |
Magnetic Permeability:
The 18-8 stainless steel tube 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 Steel
General 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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