FTM 146: Does Heat Treating Change Fastener Chemistry?

Heat treating changes fasteners, but not their chemistry

The answer to “is Heat Treating used to change the chemical composition of fasteners” is false.

This edition of the Fastener Training Minute with Carmen Vertullo was originally published November 21, 2019 as “Is Heat Treating used to change the chemical properties of fasteners?” during episode 146 of Fully Threaded Radio.

Heat Treating cannot change the chemistry of a metal. The chemistry of the metal is made when it comes out of the mill.

The metal gets all melted together, and then later it gets poured and that’s the chemistry forever for that particular metal or the Fastener it’s made from.

That’s one of the reasons why we can rely on the mill test report for the chemistry of a particular fastener.

Next time, we’ll discuss another question on the quiz, which is the following question: is Heat Treating used to change the physical properties of fasteners.

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