ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY ASTRID & HANNS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY
Light micrograph of a thin section of cast iron. Cast iron is a refined product of iron ore, and was used extensively for construction purposes during the Industrial Revolution. Cast iron contains many impurities, mainly carbon, so although it is quite shock-resistant it is brittle under bending. Today its main industrial use is in the manufacture of car engine blocks. Magnification: x62 at 6x4.5cm size.
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