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to Properties of carbon materials
(submitted by the website administration)
| Single crystal diamond | ||||
| Chemical composition: carbon (C) | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 3.515*10³ | kg/m³ | 219 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 900-1220 | GPa | 1.31*108-1.77*108 | ksi |
| Modulus of elasticity in [111] direction | 1220 | GPa | 1.77*108 | ksi |
| Poisson ratio | 0.1 | 0.1 | ||
| Hardness (Vickers) | 100 | GPa | 10200 | HV |
| Tensile strength | 0.5-1.4 | GPa | 72,500-203,000 | ksi |
| Compressive strength | >110 | GPa | >1.6*107 | ksi |
| Thermal expansion at 300 K | 1*10-6 | ºCˉ¹ | 0.56*10-6 | in/(in* ºF) |
| Thermal expansion at 1300 K | 5*10-6 | ºCˉ¹ | 2.78*10-6 | in/(in* ºF) |
| Thermal conductivity at 300 K (Type I) | 900 | W/(m*K) | 6240 | BTU*in/(hr*ft²*ºF) |
| Thermal conductivity at 300 K (Type IIa) | 2300 | W/(m*K) | 16,000 | BTU*in/(hr*ft²*ºF) |
| Thermal conductivity at 473 K (Type IIa) | >1000 | W/(m*K) | >7000 | BTU*in/(hr*ft²*ºF) |
| Specific heat capacity at 300 K | 500 | J/(kg*K) | 0.12 | BTU/(lb*ºF) |
| Specific heat capacity at 700 K | 1500 | J/(kg*K) | 0.36 | BTU/(lb*ºF) |
| Refractive index | 2.4 | 2.4 | ||
| Dielectric constant | 5.7 | 5.7 | ||
| Dielectric strength | 1000 | KV/mm | 25,000 | V/mil |
