ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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Martensite

The hard constituent produced when steel is cooled from the hardening temperature at a speed greater than its critical cooling rate. Martensite is an acicular phase when seen in the microstructure of steel.

Martensite

A hard constituent in quenched steel, formed without diffusion and only during rapid cooling below a certain temperature. It is the hardest of the transformation products of austenite.

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