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Grade 350 Maraging Steel vs. Silicon Carbide

Grade 350 maraging steel and silicon carbide belong to fundamentally different material chemistries. Grade 350 maraging steel is a metal, while silicon carbide is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (22, 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 grade 350 maraging steel and the bottom bar is silicon carbide.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 750 to 2400
2780 to 3900
Elastic (Young's, Tensile) Modulus, GPa 190
370 to 490
Poisson's Ratio 0.3
0.14 to 0.21
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
210 to 370

Thermal Properties

Specific Heat Capacity, J/kg-K 450
670 to 1180
Thermal Expansion, µm/m-K 12
4.0 to 4.5

Otherwise Unclassified Properties

Density, g/cm3 8.2
3.0 to 3.2

Common Calculations

Stiffness to Weight: Axial, points 13
69 to 84
Stiffness to Weight: Bending, points 23
79 to 82
Strength to Weight: Axial, points 38 to 82
18 to 34
Strength to Weight: Bending, points 29 to 49
24 to 38
Thermal Shock Resistance, points 35 to 74
6.9 to 18