Diamond (Natural Single Crystal Type IIa) vs Glassy Carbon (Vitreous Carbon SIGRADUR-G grade)
Property comparison of Diamond (Natural Single Crystal Type IIa) and Glassy Carbon (Vitreous Carbon SIGRADUR-G grade), both carbon graphite.
| Property | Diamond (Natural Single Crystal Type IIa) | Glassy Carbon (Vitreous Carbon SIGRADUR-G grade) | Difference |
|---|---|---|---|
| Tensile strength | 3,500 MPa | 100 MPa | -97% |
| Poisson ratio | 0.07 | 0.23 | +229% |
| Density | 3,510 kg/m³ | 1,420 kg/m³ | -60% |
| Thermal conductivity | 2,200 W/m·K | 6.3 W/m·K | -100% |
| Specific heat | 509 J/kg·K | 710 J/kg·K | +39% |
| Coefficient of thermal expansion | 0.000001 1/K | 0.000003 1/K | +210% |
Difference is Glassy Carbon (Vitreous Carbon SIGRADUR-G grade) relative to Diamond (Natural Single Crystal Type IIa). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
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