Proceedings of the Third International Conference on Metals & Hydrogen P14

Hydrogen Embrittlement study of X4CrNiMo 16.5.1 martensitic stainless steel and its weld: use of standard disk pressure tests

S. Thiébaut (1)1 , F. Cusenza (1)1 , S. Ringeval (1)1 , I. Moro (2)2 , L. Briottet (2)2

  • (1) 1

    CEA, DAM, Centre d’études de Valduc, F-21120 Is-sur-Tille, France

  • (2) 2

    Univ. Grenoble Alpes, F-38000 Grenoble, France - CEA, LITEN, DTBH, F-38054 Grenoble, France


Welds are usually known to be more sensitive to Hydrogen Embrittlement than base materials. Thus, characterization of HE in welds is a real concern for manufacturers as standard test methods do not address them. In this work, we have applied standard disk pressure tests to a martensitic stainless steel (X4CrNiMo 16.5.1) and then to a homogeneous weld made by electron beam. For this purpose, disks were cut from welded plates, the weld being located along disks diameter. First, behaviours of base/welded disks are compared. Then, the validity of results for welded disks is discussed in comparison to experiments performed with more usual HE tests (tensile tests …).


  • martensitic stainless steel
  • weld
  • disk pressure test