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Granite vs. SAE-AISI 4150 Steel

Granite and SAE-AISI 4150 steel belong to fundamentally different material chemistries. Granite is a ceramic material, while SAE-AISI 4150 steel is a metal. 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 (19, 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 granite and the bottom bar is SAE-AISI 4150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 39
660 to 1310

Thermal Properties

Maximum Temperature: Mechanical, °C 350
420
Specific Heat Capacity, J/kg-K 840
470
Thermal Conductivity, W/m-K 2.7
42
Thermal Expansion, µm/m-K 7.4
13

Otherwise Unclassified Properties

Density, g/cm3 2.9
7.8

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
24
Strength to Weight: Axial, points 3.8
24 to 47
Strength to Weight: Bending, points 9.0
22 to 34
Thermal Diffusivity, mm2/s 1.1
11
Thermal Shock Resistance, points 5.4
19 to 39