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Zinc Sulfide vs. Borosilicate Glass

Zinc sulfide belongs to the non-glass optical ceramics classification, while borosilicate glass belongs to the glass and glass-ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is zinc sulfide and the bottom bar is borosilicate glass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
67 to 80
Poisson's Ratio 0.28
0.21

Thermal Properties

Melting Onset (Solidus), °C 1830
560
Specific Heat Capacity, J/kg-K 520
830
Thermal Conductivity, W/m-K 27
1.2
Thermal Expansion, µm/m-K 6.5
3.3 to 5.1

Otherwise Unclassified Properties

Density, g/cm3 4.1
2.2 to 2.6
Light Transmission Range, µm 0.37 to 14
0.3 to 2.5
Refractive Index 2.3
1.5

Common Calculations

Stiffness to Weight: Axial, points 10
15 to 17
Stiffness to Weight: Bending, points 34
55 to 61
Thermal Diffusivity, mm2/s 13
0.54 to 0.63