Materials for High-Pressure Apparatus

In this article, various materials used for the fabrication of high-pressure apparatus are reviewed. Stresses working on each part of the apparatus are considered and a guideline for the selection of suitable materials is given on the basis of their mechanical and physical properties. Especially, the relation of the material strength to the generated pressure is explained in the case of the piston-cylinder type high-pressure clamp cell. It is also emphasized that the processing is important for the materials strength and the performance of high-pressure apparatus. In connection with recent topics of the Ni-based Russian alloy (NiCrAl alloy) and MP35N, some of their materials properties are introduced.