ISO 642:2024

This International Standard specifies the method for determining the hardenability of steel by butt quenching (Jominy test), using a test piece of 25 mm in diameter and 100 mm in length.NOTE By agreement and for a given field of application, the test described in this International Standard may be replaced by the calculation of the Jominy curve in accordance with an accepted mathematical model (see annex C). In case of dispute, the test must be carried out.
(Automatic translation from French)