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Borosilicate Glass vs. C72700 Copper-nickel

Borosilicate glass and C72700 copper-nickel belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while C72700 copper-nickel 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 (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 borosilicate glass and the bottom bar is C72700 copper-nickel.

Borosilicate GlassUNS C72700 Tin-Bearing Copper-Nickel
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67 to 80
120
Poisson's Ratio 0.21
0.34
Tensile Strength: Ultimate (UTS), MPa 280
460 to 1070

Thermal Properties

Maximum Temperature: Mechanical, °C 360
200
Melting Onset (Solidus), °C 560
930
Specific Heat Capacity, J/kg-K 830
380
Thermal Conductivity, W/m-K 1.2
54
Thermal Expansion, µm/m-K 3.3 to 5.1
17

Otherwise Unclassified Properties

Density, g/cm3 2.2 to 2.6
8.8

Common Calculations

Stiffness to Weight: Axial, points 15 to 17
7.4
Stiffness to Weight: Bending, points 55 to 61
19
Strength to Weight: Axial, points 30 to 35
14 to 34
Strength to Weight: Bending, points 36 to 43
15 to 26
Thermal Diffusivity, mm2/s 0.54 to 0.63
16
Thermal Shock Resistance, points 50 to 91
16 to 38