As we learned earlier, there are many different kinds of steel to choose from. However, even with all of these choices, all steels share the same structures at a microscopic level. Part of the marvel of steel is to be able to change its properties with simple changes in temperature, different kinds of which can create different structures with different characteristics, but before we go too in depth on the different ways of treating steel with heat, let's take a look at the different structures we hope to achieve with those heat treats.

Austenite
Martensite
Bainite
Ferrite
Cementite

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