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Borosilicate Glass vs. C28000 Muntz Metal

Borosilicate glass and C28000 Muntz Metal belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while C28000 Muntz Metal 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 (28, 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 C28000 Muntz Metal.

Borosilicate GlassUNS C28000 (CW509L) Muntz Metal
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67 to 80
100
Poisson's Ratio 0.21
0.31
Tensile Strength: Ultimate (UTS), MPa 280
330 to 610

Thermal Properties

Maximum Temperature: Mechanical, °C 360
120
Melting Onset (Solidus), °C 560
900
Specific Heat Capacity, J/kg-K 830
390
Thermal Conductivity, W/m-K 1.2
120
Thermal Expansion, µm/m-K 3.3 to 5.1
21

Otherwise Unclassified Properties

Density, g/cm3 2.2 to 2.6
8.0

Common Calculations

Stiffness to Weight: Axial, points 15 to 17
7.2
Stiffness to Weight: Bending, points 55 to 61
20
Strength to Weight: Axial, points 30 to 35
11 to 21
Strength to Weight: Bending, points 36 to 43
13 to 20
Thermal Diffusivity, mm2/s 0.54 to 0.63
40
Thermal Shock Resistance, points 50 to 91
11 to 20