This Technical Report proposes quality requirements for heat treatment in air or controlled atmospheres carried out in workshops and on site in connection with welding and forming. It applies mainly to ferritic steels, but may be used for other materials, as appropriate.

The purpose of this report is to form as a guidance for manufacturers which perform heat treatment or produce heat treated products or components. This report may also be used as a basis for assessing the manufacturer in respect to its heat treatment capability.

The requirements contained within this report may be adopted in full or may be selectively deleted by the manufacturer if not applicable to the construction concerned. They provide a flexible framework for the control of heat treatment in the following cases:

Case 1

To provide specific requirements for heat treatment in contracts which require the manufacturer to have a quality system in accordance with EN ISO 9001 or EN ISO 9002.

Case 2

To provide specific requirements for heat treatment in contracts which require the manufacturer to have a quality system other than EN ISO 9001 or EN ISO 9002.

Case 3

To provide specific requirements for heat treatment as guidance to a manufacturer developing a quality system.

Case 4

To provide specific requirements for post weld heat treatment when required by EN 729-2 or EN 729-3.

Case 5

To provide specific requirements for references in application standards which uses heat treatment as part of its requirements or agreed in a contract between relevant parties.