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Click on table links below to see properties
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Ferro-Ceramic Grinding Inc. machines over 15 different materials
Graphite
Graphite Graphite oxidizes under (heated) use in an
air (oxidizing) environment, and therefore finds its use in inert.
Graphite Properties
Graphite
Graphite oxidizes under (heated) use in an air (oxidizing)
environment, and therefore finds its use in inert and vacuum applications
such as furnace insulation packages and semiconductor. This material
has the same lubricious properties as boron nitride thanks to the
same crystal structure. Used in inert atmospheres, use temperature
can be upwards of 3500°C.
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Properties
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Units
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Test
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Value
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Physical
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Chemical Formula
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-
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-
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C
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Density, r
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g/cm3
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ASTM C20
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2.25
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Color
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-
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-
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black
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Crystal Structure
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-
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-
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hexagonal
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Water Absorption
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% @R.T.
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ASTM C373
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0.5 - 3.0
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Hardness
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Moh's
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-
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1.0 - 1.5
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Hardness
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knoop (kg/mm2)
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Knoop 100g
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--
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Mechanical
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Compressive Strength
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MPa @ R.T.
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ASTM C773
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96
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Tensile Strength
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MPa @ R.T.
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ACMA Test #4
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4.8
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Modulus of Elasticity
(Young's Mod.)
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GPa
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ASTM C848
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4.8
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Flexural Strength (MOR)
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MPa @ R.T.
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ASTM F417
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50
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Poisson's Ratio, u
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-
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ASTM C818
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--
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Fracture Toughness, KIc
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MPa x m1/2
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Notched Beam Test
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--
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Thermal
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Max. Use Temperature
(* denotes inert atm.)
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șC
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No load cond.
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3650 *
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Thermal Shock Resistance
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DT (șC)
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Quenching
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200 - 250
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Thermal Conductivity
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W/m-K @ R.T.
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ASTM C408
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24
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Coefficient of Linear Thermal Expansion, al
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mm/m-șC (~25șC
through ±1000șC)
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ASTM C372
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8.39
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Specific Heat, cp
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cal/g-șC @ R.T.
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ASTM C351
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0.16
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Electrical
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Dielectric Constant
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1MHz @ R.T.
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ASTM D150
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--
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Dielectric Strength
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kV/mm
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ASTM D116
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--
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Electrical Resistivity
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Wcm @ R.T.
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ASTM D1829
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7 x 10-3
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*Although we have no reason to doubt
the accuracy of the data presented, Ferro-Ceramic Grinding Inc. offers this information
for comparison only, and disclaims any and all liability from error,
omissions or inaccuracies, such that it does not constitute a warranty
or representation for which we shall assume legal responsibility.
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