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AISI 304 Stainless Steel vs. Engineering Porcelain

AISI 304 stainless steel and engineering porcelain belong to fundamentally different material chemistries. AISI 304 stainless steel is a metal, while engineering porcelain is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (31, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AISI 304 stainless steel and the bottom bar is engineering porcelain.

AISI 304 (S30400) Stainless SteelEngineering Porcelain
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67 to 150
Poisson's Ratio 0.28
0.17
Shear Modulus, GPa 77
34
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
130

Thermal Properties

Maximum Temperature: Mechanical, °C 710
1170
Specific Heat Capacity, J/kg-K 480
600 to 1000
Thermal Conductivity, W/m-K 16
1.8 to 6.5
Thermal Expansion, µm/m-K 17
2.0 to 6.6

Otherwise Unclassified Properties

Density, g/cm3 7.8
2.3 to 3.0

Common Calculations

Stiffness to Weight: Axial, points 14
16 to 29
Stiffness to Weight: Bending, points 25
49 to 65
Strength to Weight: Axial, points 21 to 42
12 to 16
Strength to Weight: Bending, points 20 to 32
19 to 25
Thermal Diffusivity, mm2/s 4.2
0.73 to 3.9
Thermal Shock Resistance, points 12 to 25
11 to 53