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Home Materials Carbon , C
6 12.011
C
Carbon

Carbon , C

Carbon is a chemical element with the symbol C and atomic number 6. It is a group 14, non-metallic, tetravalent element, that presents several allotropic forms of which the best known are graphite (the thermodynamically stable form under normal conditions), diamond, and amorphous carbon. There are three naturally occurring isotopes: 12C and 13C are stable, and 14C is radioactive, decaying with a half-life of about 5700 years. Carbon is one of the few elements known to man since antiquity. The name "carbon" comes from Latin language carbo, coal, and in some Romance languages, the word carbon can refer both to the element and to coal.

 

  • Listed below are a selection of some more commonly used sizes. If you do not see anything that suits your needs, please click on the custom request forms and send us your requirements.
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C3-5000-M

C 1-10mm Pieces 99.99% Pure

Graphite

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C3-2003-R1

C Rod 6mm dia. x 50mm long 99.99% Pure

Carbon

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C3-2003-R2

C Rod 6.35mm dia. x 70mm long 99.99% Pure

Carbon

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C3-2006-R1

C Rod 10mm dia. x 10mm long 99.99% Pure

Carbon

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C3-2009-R1

C Rod 0.75" dia. x 12" long 99.99% Pure

Carbon

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C3-2010-R1

C Rod 25.4mm dia. x 50.8mm long 99.99% Pure

Carbon

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C3-2010-R2

C Rod 1" dia. x 2" long 99.99% Pure

Carbon

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C3-2010-R3

C Rod 25mm dia. x 100mm long 99.99% Pure

Carbon

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C3-2017-R1

C Rod 102mm dia. x 100mm long 99.99% Pure

Carbon

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C3-2018-R1

C Rod 62mm dia. x 250mm long 99.9% Pure

Carbon

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C3-2019-R1

C Rod 50mm dia. x 1000mm long 99.9% Pure

Vibracation graphite material with bulk density1.72g/cm3; grain size 0.8mm Carbon

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C3-2020-R1

C Rod 65mm dia. x 300mm length 99.9% Pure

Moulded Graphite material with bulk density1.85g/cm3, Carbon

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C3-2021-R1
C Rod 5mm dia. x 150mm long 99.99% PureCarbon
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C3-2021-R2

C Rod 5mm dia. x 200mm long 99.99% Pure

Carbon

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C3-2022-R1

C Rod 95mm dia. x 300mm long 99.9% Pure

Moulded graphite material with bulk density1.85g/cm3 Carbon

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C3-9000-D

Carbon C, Available purities 99.5%, 99.9%, 99.95% & 99.99%

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C3-9000-Dx

Glassy Coated Carbon,

Available purity 99.9%

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C3-9000-Dxx

Pyrolytic Graphite

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C3-9001-D

Carbon-Tungsten C-W,

Available in various ratios wt% or at%, Purity 99.9%

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C3-9002-D

Carbon-Silicon C-Si,

Available in various ratios wt% or at%, Purity 99.9%

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C3-9003-D

Carbon-Boron C-B,

Available in various ratios wt% or at%, Purity 99.9%

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C3-9004-D

Carbon-Nickel, C-Ni 80-20 at%,

Available in various ratios wt% or at%, Purity 99.99%

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C3-9000-D18

C TRG 57mm dia. x 1.5mm Tk 99.99% Pure

Carbon

$125.40/PCS
7 PCS in stock
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C-ST-1-3-4N

C TRG 25.4mm dia. x 3mm Tk 99.99% Pure

Carbon

$46.20/PCS
1 PCS in stock
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C-ST-1-6-4N

C TRG 25.4mm dia. x 6mm Tk 99.99% Pure

Carbon

$59.40/PCS
3 PCS in stock
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C-ST-2-3-4N

C TRG 50.8 mm dia. x 3mm Tk 99.99% Pure

Carbon

$66.00/PCS
3 PCS in stock
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C-ST-2-6-4N

C TRG 50.8mm dia. x 6mm Tk 99.99% Pure

Carbon

$92.40/PCS
12 PCS in stock
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C-ST-3-3-4N

C TRG 76.2mm dia. x 3mm Tk 99.99% Pure

Carbon

$72.60/PCS
3 PCS in stock
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C-ST-4-3-4N

C TRG 101.6mm dia. x 3mm Tk 99.99% Pure

Carbon

$112.20/PCS
3 PCS in stock
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C-ST-4-6-4N

C TRG 101.6mm dia. x 6mm Tk 99.9% Pure

Carbon

$129.36/PCS
0 PCS in stock
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C3-9000-D3

C TRG 50.8mm dia. x 1mm Tk 99.5% Pure

Graphite

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C3-9000-D50

C TRG 75mm dia. x 5mm Tk 99.99% Pure

Carbon

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

The physical properties of carbon vary widely with the allotropic form. For example, diamond is highly transparent, while graphite is opaque and black. Diamond is among the hardest materials known, while graphite is soft enough to form a streak on paper. Diamond has a very low electric conductivity, while graphite is a very good conductor. Also, diamond has the highest thermal conductivity of all known materials under normal conditions. All the allotropic forms are solids under normal conditions.

All forms of carbon are highly stable, requiring high temperature to react even with oxygen. The most common oxidation state of carbon in inorganic compounds is +4, while +2 is found in carbon monoxide and other transition metal carbonyl complexes. The largest sources of inorganic carbon are limestones, dolomites and carbon dioxide, but significant quantities occur in organic deposits of coal, peat, oil and methane clathrates. Carbon forms more compounds than any other element, with almost ten million pure organic compounds described to date, which in turn are a tiny fraction of such compounds that are theoretically possible under standard conditions.

Symbol C
Atomic number 6
No. of naturally occurring isotopes 2+1
Atomic weight 12.011
Electronic configuration [He] 2s22p2
Ionization energy/kJmol-1 1086.1
II 2351.9
III 4618.8
IV 6221
Electronegativity χ 2.5
Density (20°C)/gcm 3.514
Melting point /°C 4100
Boiling point /°C -
ΔHf(monoatomic gas)/kJmol-1 716.7
Electrical resistivity -
(20°C)/ μohm cm 1014-1016
Band gap Eg/kJ mol-1 ~580
rVI(covalent)/pm 77.2
r VI (ionic,6-coordinate)/pm (15) (CN4)
Temperature (oC) @Vap. Pressure
10-8 Torr 1657 Sublimes
10-6 Torr 1867 Sublimes
10-4 Torr 2137 Sublimes
Techniques
Electron Beam Excellent
Crucible -
Coil -
Boat -
Remarks
EB preferred. Arc evaporation. Poor film Adhesion. Vitreous carbon n= 1.47.