BS EN ISO 642:1999

National foreword
Foreword
1 Scope
2 Normative references
3 Principle
4 Symbols and designations
5 Form of test pieces and their preparation
6 Apparatus
7 Heating and quenching of test piece
8 Preparation for, and measurement of, hardness
   after quenching
9 Expression of results
10 Test report
Annex A (informative) - Specification for the hardenability
        of a product
Annex B (informative) - Additional information to clause 10
Annex C (informative) - Calculation of the hardenability
Annex ZA (normative) - Normative references to international
         publications with their relevant European publications
Bibliography

Defines a method for determining the hardenability of steel by end quenching (Jominy test) by using a test piece 25 mm in diameter and 100 mm long.

This International Standard specifies a method for determining the hardenability of steel by end quenching (Jominy test) by using a test piece 25mm in diameter and 100mm long.

NOTE By agreement and for a defined 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 annexC). In case of dispute, the test shall be carried out.