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| High density extruded graphite | ||||
| Chemical composition: carbon (C), ash 1500 ppm | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 1.80*10³ | kg/m³ | 112 | lb/ft³ |
|---|---|---|---|---|
| Maximum grain size | 760 | μm | 30 | microinch |
| Permeability | 5*10-3 | Darcy | 5*10-3 | Darcy |
| Modulus of elasticity WG | 11 | GPa | 1590 | ksi |
| Modulus of elasticity AG | 9.3 | GPa | 1350 | ksi |
| Flexural strength WG | 22 | MPa | 3190 | psi |
| Flexural strength AG | 19 | MPa | 2755 | psi |
| Tensile strength WG | 15.9 | MPa | 2300 | psi |
| Tensile strength AG | 14 | MPa | 2030 | psi |
| Compressive strength | 59 | MPa | 8500 | psi |
| Hardness (Rockwell R) | 94 | RR | 94 | RR |
| Thermal expansion WG | 3.2*10-6 | ºCˉ¹ | 1.8*10-6 | in/(in* ºF) |
| Thermal expansion AG | 3.8*10-6 | ºCˉ¹ | 2.1*10-6 | in/(in* ºF) |
| Thermal conductivity WG | 170 | W/(m*K) | 1178 | BTU*in/(hr*ft²*ºF) |
| Thermal conductivity AG | 150 | W/(m*K) | 1040 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity WG | 7*10-6 | Ohm*m | 7*10-4 | Ohm*cm |
| Electric resistivity AG | 7.5*10-6 | Ohm*m | 7.5*10-4 | Ohm*cm |
WG - with grain direction
AG - against grain direction
Applications: quartz processing, silicon crystal growth, electronic fixturing.
http://www.carbonandgraphite.org/
http://virtual-museum.soils.wisc.edu/graphite/content.html
http://www.uwm.edu/Course/422-100/Mineral_Rocks/graphite.data.html
http://www.public.asu.edu/~jpbirk/3dstruct/Graphite.htm
http://invsee.asu.edu/nmodules/Carbonmod/bonding.html
http://www.gc.maricopa.edu/earthsci/imagearchive/graphite.htm
http://www-ferp.ucsd.edu/LIB/PROPS/PANOS/c.html
http://www.phy.mtu.edu/faculty/info/jaszczak/graphiteover.html
http://encyclopedia.jrank.org/GOA_GRA/GRAPHITE.html
http://www.minerals.net/mineral/elements/graphite/graphite.html
