Stainless Steel Pipes for Hydrogen Transport: Preventing Hydrogen Embrittlement

Hydrogen transport and storage pose unique challenges due to hydrogen embrittlement (HE), which reduces ductility and mechanical strength.

• Material Selection: 316L, 904L, and high-nitrogen austenitic stainless steels (e.g., 254 SMO) are preferred for their resistance to hydrogen-induced cracking.
• High-Pressure Suitability: Hydrogen pipelines often operate at pressures exceeding 100 MPa, requiring cold-worked stainless steel for increased strength.
• Surface Treatment: Electropolishing and passivation reduce hydrogen permeability, improving resistance to diffusion-related embrittlement.