Borosilicate Glass vs. Automotive Grey Cast Iron
Borosilicate glass and automotive grey cast iron belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while automotive grey cast iron is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 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 automotive grey cast iron.
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 67 to 80 | |
180 |
Poisson's Ratio | 0.21 | |
0.29 |
Tensile Strength: Ultimate (UTS), MPa | 280 | |
140 to 290 |
Thermal Properties
Melting Onset (Solidus), °C | 560 | |
1340 to 1350 |
Specific Heat Capacity, J/kg-K | 830 | |
490 |
Thermal Conductivity, W/m-K | 1.2 | |
41 to 43 |
Thermal Expansion, µm/m-K | 3.3 to 5.1 | |
12 to 14 |
Otherwise Unclassified Properties
Density, g/cm3 | 2.2 to 2.6 | |
7.5 to 7.6 |
Common Calculations
Stiffness to Weight: Axial, points | 15 to 17 | |
13 |
Stiffness to Weight: Bending, points | 55 to 61 | |
25 |
Strength to Weight: Axial, points | 30 to 35 | |
5.2 to 11 |
Strength to Weight: Bending, points | 36 to 43 | |
8.0 to 13 |
Thermal Diffusivity, mm2/s | 0.54 to 0.63 | |
11 to 12 |
Thermal Shock Resistance, points | 50 to 91 | |
4.2 to 8.6 |