Chipping Test
Another method of finding an unknown metal's composition is to use a chisel to remove a small piece of the metal.
Grey Cast Iron
Chips are smooth and brittle
Cast Steel
Easily chipped, can be continuous if desired
Aluminum
Chips are continuous but leave a saw edge
White Cast Iron
Metal is brittle and breaks into small fragments
Malleable Iron
Rough chips
High Carbon Steel
Lighter color at edges than mild steel, chips can be continuous
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