Hematite is a naturally occurring iron oxide with the chemical formula Fe2O3. It is mined from many deposits worldwide and although the vast majority is used to make iron and steel, the many special properties of hematite make it suitable for other applications, including as a filler for plastics and coatings. It shares several attractive features with magnetite, another iron oxide, but hematite filler may well prove to be a more cost-effective option, especially in certain parts of the world.
- Appearance: Grey, shiny, metallic
- Density: High, 5.2 gcm-3
- Thermal conductivity: Very good 12.5 Wcm-1K-1
- Volumetric specific heat capacity: High 3.25 kJL-1K-1
- Electrical conductivity: Semi-conductive (ρ 0.1-300 Ωm)
- Radiation blocking: Very good (neutrons and x-rays)
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