In order to ensure economic performance, of both the existing reactors and the future EFR, much recent research has been carried out within the framework of the European R and D agreement to examine the properties of various wrapper and cladding alloys. This paper reviews the status of the European research and development programmes on these steels and highlights the most striking results. For the cladding alloys, results on dimensional stability and tensile properties for fuel pin cladding irradiated in PFR or Phenix will be given. As for wrappers the presently available results of those wrappers irradiated in Phenix and PFR show that both ferritic steels are very good candidates and that on the basis of our present knowledge most of the properties are satisfactory for wrapper applications.
Levy, V;  Brown, C; Roger, R J.C.;  Ehrlich, K;  Bergmann, H 
- CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Technologie des Materiaux
- UKAEA Dounreay Nuclear Power Development Establishment (United Kingdom)
- Kernforschungszentrum Karlsruhe GmbH (Germany)
- Internationale Atomreaktorbau GmbH (INTERATOM), Bergisch Gladbach (Germany)