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SAE-AISI 1010 Steel vs. Optical Silicon

SAE-AISI 1010 steel and optical silicon belong to fundamentally different material chemistries. SAE-AISI 1010 steel is a metal, while optical silicon is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 16 material properties with values for both materials. Properties with values for just one material (23, 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 SAE-AISI 1010 steel and the bottom bar is optical silicon.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 350 to 400
110

Thermal Properties

Maximum Temperature: Mechanical, °C 400
1350
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
700
Thermal Conductivity, W/m-K 47
150
Thermal Expansion, µm/m-K 12
3.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
2.3

Common Calculations

Stiffness to Weight: Axial, points 13
35
Stiffness to Weight: Bending, points 24
75
Strength to Weight: Axial, points 12 to 14
13
Strength to Weight: Bending, points 14 to 15
22
Thermal Diffusivity, mm2/s 13
93
Thermal Shock Resistance, points 11 to 13
18