Carbon rods
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Carbon rods

Graphite is the stable form of carbon and one of the softest minerals. In contrast, diamond is one of the hardest known minerals. It is important to note that carbon itself is harder than graphite. Graphite is recommended for transmission electron microscopy (TEM) and scanning electron microscopy (SEM) applications.Carbon/graphite films are most usable in TEM and SEM due to their value characteristics: uniformity, amorphous and high transparency to electron beams. Because of their low molecular weight and unique structure (graphite has a sheet-like structure, where the atoms all lie in a plane), carbon/graphite films have excellent mechanical stability, and even film thickness is about 1 - 2nm.These carbon/graphite rods are CVP (Chemical Vapour Process) purity and spectrographic grade, Grade 1, produced to ASTM tolerances, or even tighter, as we also have a technical grade. The technical grade has a typical impurity le...

Graphite is the stable form of carbon and one of the softest minerals. In contrast, diamond is one of the hardest known minerals. It is important to note that carbon itself is harder than graphite. Graphite is recommended for transmission electron microscopy (TEM) and scanning electron microscopy (SEM) applications.

Carbon/graphite films are most usable in TEM and SEM due to their value characteristics: uniformity, amorphous and high transparency to electron beams. Because of their low molecular weight and unique structure (graphite has a sheet-like structure, where the atoms all lie in a plane), carbon/graphite films have excellent mechanical stability, and even film thickness is about 1 - 2nm.

These carbon/graphite rods are CVP (Chemical Vapour Process) purity and spectrographic grade, Grade 1, produced to ASTM tolerances, or even tighter, as we also have a technical grade. The technical grade has a typical impurity level of 50ppm or greater. Technical grade may be used in applications of non-critical SEM coating applications.

Spectro-Grade Carbon Rods (graphite) have an impurity level of 2ppm or less with a maximum level element of each of 1 ppm. These rods are ideal for all TEM, SEM and all other critical applications.

Properties:

Name Carbon
Symbol C
Atomic number 6
Atomic weight 12.0107
Group number 14
Period number 2
CAS I.D. 7440-44-0
Block p-block
Specific gravity (graphite) 2.2g/cm3
Specific gravity (diamond) 3.51g/cm3
Specific gravity (amorphous) 1.88g/cm3
m. p. sublimes ~3550°C
Boiling point 4200°C
Evaporation Temp (at which a substance has a vapour pressure of 1.33 x 10-2 mbar) 2400°C
Density 1.85g/cc
Shore Scleroscope Hardness 45
Resistivity Ohms-in 4.0 x 104
Ash Content <2 ppm
Flexural Strength 8000 lb/in2
Porosity 16.5%
Updated: 24-06-2025
Code Size Pack Size Availability Price Updated: 24-06-2025
EMS70210 3.2mm dia. x 305mm Pack/12 0 in stock (?) P.O.R. Quote
EMS70212 6.35mm dia. x 305mm Pack/12 0 in stock (?) P.O.R. Quote