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AISI 316 Stainless Steel vs. CVD Diamond

AISI 316 stainless steel and CVD diamond belong to fundamentally different material chemistries. AISI 316 stainless steel is a metal, while CVD diamond is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (29, 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 316 stainless steel and the bottom bar is CVD diamond.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
1050
Poisson's Ratio 0.28
0.1
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
750

Thermal Properties

Specific Heat Capacity, J/kg-K 470
500
Thermal Conductivity, W/m-K 15
1900
Thermal Expansion, µm/m-K 16
1.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
3.5

Common Calculations

Stiffness to Weight: Axial, points 14
170
Stiffness to Weight: Bending, points 25
96
Strength to Weight: Axial, points 18 to 41
59
Strength to Weight: Bending, points 18 to 31
52
Thermal Diffusivity, mm2/s 4.1
1080
Thermal Shock Resistance, points 11 to 26
51