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.