Carbon

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Graphite Sheet

MATERIAL OVERVIEW

Characteristics: Relatively soft greasy feel; steel gray to black color with a metallic sheen representative of both metals and nonmetals, thus is generally classified as a metalloid. There are several allotropes of carbon of which the best known are: graphite, diamond, and amorphous carbon. The physical properties of carbon vary widely with the allotropic form. For example, diamond is highly transparent and is the hardest naturally occurring material known, while graphite is opaque and black and soft enough to form a streak on paper (the pencil). Graphite’s softness is a result of the weak bonding between atom layers which provide little resistance to interlayer movement.

Carbon is the 15th most abundant element on Earth, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. It is present in all known life forms, and in the human body carbon is the second most abundant element by mass (about 18.5%) after oxygen. This abundance, together with the unique diversity of organic compounds and unusual polymer-forming ability, make this element the chemical basis of all known life.

Although graphite is considered to have high electrical and thermal conductivity, the electrical resistivity of polycrystalline commercial Graphite is several hundred-fold higher than that of copper.

Graphite is highly inert to chemical attack at normal temperatures. Sufficiently resistant to oxidation and thermal shock for practical utilization at moderate temperatures, however, graphite deteriorates rapidly at high temperatures.

Various grades of graphite from ESPI are listed as follows:

Lectromet Grade Graphite: Typically used as cups for growing silicon crystals and other similar applications.

Electro Grade: For use in metal alloying unitized boats. Electro chemical, precious metal plating, excellent corrosion resistance as well as wetting resistance.

Aeromet Grade: For use in aerospace applications such as missile components, rocket nozzles, etc.

ESPI Super-Conductive Grade: For use in the electronic field, nuclear applications for neutron absorption epitaxial heaters, etc.

These various grades and types are available in rod and plate stock and can be supplied in varying sizes and shapes in accordance with customer’s requirements.

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GENERAL PROPERTIES

GRADE:

Lectromet

Electro

Aeromet

ESPI Super Conductive

Average Apparent Density gm/cm3 1.65 1.74 1.80 1.82
Coefficient Thermal Expansion 10-6 0F 4.3 4.6 4.7 4.7
Electrical Resistivity 70 oF uohm-in 750 630 580 690
Outgassing Negligible Negligible Negligible Negligible
Compressive Strength (psi) 15000 18000 22500 27000
Flexural Strength (psi) 7500 9500 13300 17500
Tensile Strength (psi) 5000 7000 10000 10000
Porosity (um) 0.6 0.7 0.8 0.8
Machinability Excellent Excellent Excellent Excellent

 

ROD

Material

Grade

Graphite Rod .010"  
Aero
Graphite Rod .020" Aero, Super
Graphite Rod .030" Super
Graphite Rod .040" Aero, Super
Graphite Rod .0625" Aero, Super
Graphite Rod .080" Aero, Super
Graphite Rod .125" Aero, Electro, Super
Graphite Rod .187" Aero, Electro, Super
Graphite Rod .250"  Aero, Electro, Super, Lectro
Graphite Rod .312" Aero, Electro, Super
Graphite Rod .375"  camera1  camera1 Aero, Super, Lectro
Graphite Rod .500" Aero, Electro, Lectro
Graphite Rod .625" Aero, Electro, Super
Graphite Rod .750" Aero, Electro, Super, Lectro
Graphite Rod 1.00" Aero, Electro, Super, Lectro

Additional rod diameters can be manufactured in 5-7 days, cut to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.

FOIL

Material

Grade

Graphite Foil .005” All Grades Available
Graphite Foil .006” All Grades Available
Graphite Foil .007” All Grades Available
Graphite Foil .008” All Grades Available
Graphite Foil .009” All Grades Available

Foil is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.

SHEET

Material

Grade

Graphite Sheet .010”  camera1  camera1
Aero, Electro, Super
Graphite Sheet .015" Aero, Super
Graphite Sheet .020" Aero, Electro, Super, HD/Cu
Graphite Sheet .025" Aero, Electro, Super
Graphite Sheet .040" Electro, Super, Pyro
Graphite Sheet .050" Aero, Super
Graphite Sheet .060" Aero, Super
Graphite Sheet .080" Aero, Super, Pyro
Graphite Sheet .100" Electro
Graphite Sheet .125" Aero, Electro, Super, Pyro, Lectro, EDM
Graphite Sheet .187" Aero, Electro, Lectro, Aero-Saw
Graphite Sheet .250" Aero, Electro, Super, Aero-Saw, Pyrolytic
Graphite Sheet .375" Electro, Super
Graphite Sheet .500" Super
Graphite Sheet 1.00" Aero

Sheet thicknesses are available in increments of .001”. Sheet is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.

 

Material Safety Data Sheet - MSDS

Carbon\Graphite MSDS

Graphite Powder MSDS

Technical Data Sheets
Graphite Pyrolytic
Understanding Mesh Sizes