Quenching and Tempering

Quenching and Tempering

The great benefit of martempering is that components do not suffer from size alteration and distortion. The austenitised components are quenched to a temperature close to the martensite starting point to ensure temperature equalisation between surface and core. This allow a martensitic formation being as uniform as possible during further cooling. Furthermore, for austempering the AS salts are the best choice as these assure the best attainable toughness.

Product Application Working temp. in °C
AS 140 For austempering, martempering, tempering and blueing. Not suitable for components which are heated above 950 °C or treated in a bath containing more than 13 % KCN. 160 – 550
AS 220 For austempering, martempering, tempering and blueing. Not suitable for components which are heated above 950 °C or treated in a bath containing more than 13 % KCN. 250 – 550
GS 430 For quenching and tempering parts which are austenitised at temperatures above 950 °C. 500 - 700

All the above salts are kept in stock in the UK. Additional quenching and tempering salts are available from our manufacturing site in Germany. For a comprehensive list of our product range, follow this link to the HEF Durferrit page.

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