SGL Carbon Group EK 20 Carbon Graphite

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SGL Carbon Group EK 20 Carbon Graphite
Categories:	Carbon; Graphite
Material Notes:	Good mechanical strength, good sliding properties, high temperature resistance, high thermal shock resistance, low wettability, high corrosion resistance, high thermal conductivity, high purity, and good electrical conductivity. Typical Applications: High Loaded Seals Certified for use in potable water and/or in foodstuff Information provided by SGL Carbon Group
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Physical Properties	Metric	English	Comments

Density	1.70 g/cc	0.0614 lb/in³
Open Porosity	11 %	11 %

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	105	105	Size/Load - 5/100
Hardness, Shore C	83	83
Modulus of Elasticity	22.1 GPa	3200 ksi
Flexural Strength	55.2 MPa	8000 psi
Compressive Strength	155 MPa	22500 psi

Thermal Properties	Metric	English	Comments
CTE, linear	3.06 µm/m-°C @Temperature 20.0 °C	1.70 µin/in-°F @Temperature 68.0 °F
Thermal Conductivity	12.1 W/m-K	84.0 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	399 °C	750 °F	In oxygen
Maximum Service Temperature, Inert	1204 °C	2199 °F	Reducing Atm.

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