Written by:Luke Lao
Date:Tuesday, October 15, 2019 5:44 PM

To reduce the brittleness of steel parts, the quenched steel parts are kept warm for a long time at a suitable temperature higher than room temperature but lower than 710 C° and then cooled. This process is called tempering. In general, the higher the tempering temperature is, the lower the final hardness is resulted in. Quench-tempering is the most popular method to obtain the best cutting performance of steel.

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