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Cast iron : Metallographic preparation

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What do manhole covers, heating stoves or certain automotive parts have in common? Cast iron! 

This material reveals all its beauty after metallographic preparation. 

Discover our Lab’Note dedicated to cast iron.

Cast iron GL Core etched with 4% NITAL
X100 and x1000

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Process (gamme N°3)

First pre-polishing step:

Second polishing step using CBN on a resin support:

Third polishing step using alcohol-based diamond suspension:

Fourth polishing step for finishing, using alcohol-based diamond suspension:

Etching: