304 / 304L Stainless Steel Sheet & Coil
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Stainless Steels Chromium-Nickel
Types 302 (S30200), 304 (S30400), 304L (S30403), 305 (S30500)
Physical Properties
- Density: 0.29 lb/in³ (8.03 g/cm³)
- Modulus of Elasticity in Tension 29 x 106 psi (200 GPa)
Linear Coefficient of Thermal Expansion
| Temperature Range |
Mean Coefficient of Thermal Expansion |
| °C |
°F |
mm/mm/°C |
in/in/°F · 10⁶ |
| 20 - 100 |
68 - 212 |
16.6 · 10-6 |
9.2 · 10-6 |
| 20 - 870 |
68 - 1600 |
19.8 · 10-6 |
11 · 10-6 |
Thermal Conductivity
| Temperature Range |
W/m · K |
Btu/(hr/ft²/in/°F) |
| °C |
°F |
| 100 |
212 |
16.3 |
9.4 |
| 500 |
932 |
21.4 |
12.4 |
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 grades to maintain clean surfaces often allows better heat transfer than other metals having higher thermal conductivity.
Specific Heat
| °C |
°F |
J/kg °K |
Btu/lb/°F |
| 0-100 |
32-212 |
500 |
0.12 |
Magnetic Permeability
- H/m Annealed
- 1.02 Max @ 200 H
Electrical Resistivity
| °C |
°F |
Microhm-cm |
MIcrohm-in. |
| 20 |
68 |
72 |
28.3 |
| 100 |
212 |
78 |
30.7 |
| 200 |
392 |
86 |
33.8 |
| 400 |
752 |
100 |
39.4 |
| 600 |
1112 |
111 |
43.7 |
| 800 |
1472 |
121 |
47.6 |
| 900 |
1652 |
126 |
49.6 |
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