SGL Carbon Group EK 305 Graphite

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SGL Carbon Group EK 305 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: Bearings, seals for compressors Certified for use in oxygenous atmosphere. Information provided by SGL Carbon Group
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Physical Properties	Original Value	Comments

Density	2.55 g/cc
Open Porosity	<= 2.5 %

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	115	Size/Load - 10/150
Hardness, Shore C	102
Modulus of Elasticity	3000 ksi
Flexural Strength	11500 psi
Compressive Strength	42000 psi

Thermal Properties	Original Value	Comments
CTE, linear	3.30 µin/in-°F @Temperature 20.0 °C
Thermal Conductivity	228 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	950 °F	In oxygen
Maximum Service Temperature, Inert	538 °C	Reducing Atm.

Descriptive Properties
Impregnation	Antimony

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