Design and Development of API X65 H for hydrogen transportation
Category: Mechanical/Materials
Developers: Tata Steel Limited
Product Description:Hydrogen’s role for clean energy transition is critically dependent on the ability to transport it safely and efficiently at high pressures through pipelines for long distances. However, hydrogen embrittlement, which is the tendency of hydrogen to degrade steel’s mechanical properties poses a significant threat to the integrity and safety of conventional pipeline materials. This is especially acute at the high pressures (up to 100 bar) required for modern hydrogen transportation. The existing pipeline steels are generally not engineered to withstand these conditions, risking catastrophic failure due to hydrogen-induced cracking and loss in the fracture toughness. To address this challenge, Tata Steel has developed API X65 ERW pipes for safely transporting 100% hydrogen at up to 100 bar pressure. Tata Steel is said to be the first Indian steelmaker to demonstrate end‑to‑end in‑house capabilities for producing pipes designed for high‑pressure hydrogen transportation. Tata Steel has developed a API X65-grade steel specifically designed for the safe transportation of pure hydrogen gas at high pressures, supporting the National Green Hydrogen Mission of India. This innovation leverages advanced alloy design and optimized processing to create a microstructure capable of trapping atomic hydrogen, thereby enhancing resistance to hydrogen embrittlement. The steel was successfully processed into hot-rolled coils and used to manufacture 16-inch Electric Resistance Welded (ERW) pipes through fully in-house capabilities. Rigorous hydrogen qualification tests validated the performance of the pipes, with all samples exceeding the required standards and showing no crack growth under extreme conditions. While various hydrogen transport methods exist, steel pipelines are considered the most economically viable and energy-efficient solution for large-scale distribution.
Developers: Tata Steel Limited
Product Description:Hydrogen’s role for clean energy transition is critically dependent on the ability to transport it safely and efficiently at high pressures through pipelines for long distances. However, hydrogen embrittlement, which is the tendency of hydrogen to degrade steel’s mechanical properties poses a significant threat to the integrity and safety of conventional pipeline materials. This is especially acute at the high pressures (up to 100 bar) required for modern hydrogen transportation. The existing pipeline steels are generally not engineered to withstand these conditions, risking catastrophic failure due to hydrogen-induced cracking and loss in the fracture toughness. To address this challenge, Tata Steel has developed API X65 ERW pipes for safely transporting 100% hydrogen at up to 100 bar pressure. Tata Steel is said to be the first Indian steelmaker to demonstrate end‑to‑end in‑house capabilities for producing pipes designed for high‑pressure hydrogen transportation. Tata Steel has developed a API X65-grade steel specifically designed for the safe transportation of pure hydrogen gas at high pressures, supporting the National Green Hydrogen Mission of India. This innovation leverages advanced alloy design and optimized processing to create a microstructure capable of trapping atomic hydrogen, thereby enhancing resistance to hydrogen embrittlement. The steel was successfully processed into hot-rolled coils and used to manufacture 16-inch Electric Resistance Welded (ERW) pipes through fully in-house capabilities. Rigorous hydrogen qualification tests validated the performance of the pipes, with all samples exceeding the required standards and showing no crack growth under extreme conditions. While various hydrogen transport methods exist, steel pipelines are considered the most economically viable and energy-efficient solution for large-scale distribution.
