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Borosilicate Glass vs. Z21210 Zinc

Borosilicate glass and Z21210 zinc belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while Z21210 zinc is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 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 borosilicate glass and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.2 to 2.6
7.1
Melting Onset (Solidus), °C 560
420
Specific Heat Capacity, J/kg-K 830
400
Strength to Weight: Axial, points 30 to 35
5.7 to 6.4
Strength to Weight: Bending, points 36 to 43
8.6 to 9.4
Tensile Strength: Ultimate (UTS), MPa 280
150 to 170
Thermal Conductivity, W/m-K 1.2
110
Thermal Diffusivity, mm2/s 0.54 to 0.63
38
Thermal Expansion, µm/m-K 3.3 to 5.1
32