The Core Material Of Hydrogen Cylinders

The core materials for hydrogen cylinders mainly include steel cylinders, aluminum alloy cylinders, and composite material cylinders (such as carbon fiber wound cylinders). Steel cylinders are widely used in industrial fields due to their high pressure resistance and low cost, but they are susceptible to hydrogen embrittlement caused by hydrogen gas corrosion. After long-term use, strict testing of wall thickness and cracks is required, and their lifespan is typically 10-15 years. Aluminum alloy cylinders are lightweight and highly corrosion-resistant, suitable for automotive or portable applications, with a lifespan of 15-20 years.

 

Composite material cylinders combine high-strength carbon fiber with a metal inner liner, resulting in lighter weight and higher pressure resistance, with a lifespan generally exceeding 20 years, but at a higher cost. In terms of manufacturing processes, advanced heat treatment, spin forming, and automated welding technologies significantly improve cylinder uniformity and reduce stress concentration, thereby extending service life.