• Lindner, M.
• Meusinger, J.
• Michler, T.
• Eberle, Ulrich

Abstract

n automotive designs, low cost and low weight are major requirements. A benchmark analysis revealed high pressure hydrogen storage (pressures up to 70 MPa) to be the most technically and commercially viable solution. Structural materials play an important role in commercialization of such a technology. The use of Cr–Ni austenitic stainless steels, ferritic steels and aluminium alloys is reviewed. Testing methodologies for the qualification of materials is discussed in the context of hydrogen diffusion and solubility in each material. To utilize the huge innovation potential of both original equipment manufacturers (OEMs) and suppliers, a widely accepted test standard for the qualification of materials for use in high purity/high pressure H2 applications, especially under S–N fatigue load, is urgently needed. Consequently, a robust fatigue design model covering the influence of gaseous high pressure hydrogen is required to reduce weight and cost in automotive designs without compromising safety.

Topics

• impedance spectroscopy
• stainless steel
• aluminium
• fatigue
• aluminium alloy
• Hydrogen