抄録
The newly issued standard, HPIS E 103: 2018, “Standard Test Method for Humid Gas Stress Corrosion Cracking of Aluminium Alloys for Compressed Hydrogen Containers” has been reviewed. This standard specifies the indicated test method and the qualification criteria of aluminium alloys for compressed hydrogen containers for automotive use. It was established at the request of automotive industry in order to evaluate the HG-SCC susceptibility of aluminium alloys used in compressed hydrogen containers. In this standard, the humidity as well as the temperature of the environment where the pre-cracked test piece is maintained is explicitly specified unlike ISO 7866Annex B (Sustained-Load Cracking Test) , considering that the inside of the compressed hydrogen container may be subjected to high relative humidity at about -7°C arising from impurity water vapor (maximum 5ppm) .
