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	PRODUCT DATA of Carbon

Material

Carbon

Effects of Space environment

In space graphite is not a lubricant

Product Type

Graphite

Chemical Composition

100C

CAS Registry ID

7440-44-0

	EXPERIENCE IN PRACTICE

Development Status

Special Commercial Product

Equivalent Designations

C

	PHYSICAL PROPERTIES

Atomic Number

6

Atomic Weight

12 amu

Work Function

4.8 eV

Crystal Structure

Hexagonal

Specific Gravity

2.25

	ELASTIC PROPERTIES

Tensile Modulus

4.8 GPa

Shear Modulus

1.8 GPa

Bulk Modulus

3.3 GPa

Poisson Ratio

0.25

Speed of Sound (longitudinal)

18400 m/s

	ELECTRICAL PROPERTIES

Electrical Volume Resistivity

0.0000138 ohm.m

	THERMAL PROPERTIES

Thermal Conductivity

80 to 240 W/m.K

Thermal Expansion Coefficient

0.6 to 5.3 μstrain/°C

Specific Heat

0.712 J/g.K

Melting Range

3650 °C

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

EMF vs SCE

0.06 to 0.15 V Remark: Measured in 3.5% NaCl solution Data Quality: Design Data