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Grade 350 Maraging Steel vs. Silicon Nitride

Grade 350 maraging steel and silicon nitride belong to fundamentally different material chemistries. Grade 350 maraging steel is a metal, while silicon nitride is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (27, 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 nitride.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 750 to 2400
600 to 2950
Density, g/cm3 8.2
2.2 to 3.4
Elastic (Young's, Tensile) Modulus, GPa 190
140 to 310
Poisson's Ratio 0.3
0.24 to 0.27
Specific Heat Capacity, J/kg-K 450
720 to 800
Stiffness to Weight: Axial, points 13
34 to 53
Stiffness to Weight: Bending, points 23
65 to 78
Thermal Expansion, µm/m-K 12
2.5 to 3.2