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Further to the key features that make the pyrocarbon ideal for medical use and especially in orthopaedics, Pyrocarbon has other interesting features that can be used in other areas :
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an exceptional wear resistance thanks to its very low coefficient of friction.
Pyrocarbon is almost unwearable when rubbing against itself.
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an excellent polishing ability
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perfect surface roughness (Ra < 0.02 µm) |
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control of the porosity |
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a total chemical inertia
perfect resistance to corrosion
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particular mechanical properties
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| Main Pyrocarbon properties compared to other materials: |
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Pyrocarbon |
Silicon nitride
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Titanium alloy (TA6V)
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Zirconia alloyed to Ytrium
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Alumina
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Density (g.cm-3)
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1.7 - 2
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2.5 – 3.3
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4.43
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5.9 - 6.1
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3.5 – 3.8
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Young's Modulus (GPa)
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21 - 28
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310
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110
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205
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407
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Poisson's ratio
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0.22
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0.22 – 0.3
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0.33
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0.3
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-
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Strain to failure (%)
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1.2 – 1.5
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-
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8
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0.17 – 0.34
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0.07 – 0.15
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Flexural strength (MPa)
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280 – 560
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200 – 800
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500
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800 – 1400
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345
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Compression strength (MPa)
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1350
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550 – 2000
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1865
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2000
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3500
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Yield strength (MPa)
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345
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-
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980
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300 – 600
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250
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Hardness (Vickers)
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150 – 250
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1100 – 1500
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-
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1250
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1600 - 2000
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