The group has sold shells made from standard alloys for years. It recorded feedback to correlate a chemical analysis.

Based on this it identified operating conditions in terms of mechanical stress, thermal load and corrosion phenomena as vital alloying elements. A study was carried out in collaboration with the materials and metallurgical departments of local universities, among others.

The aim was the selection of the best material for the shells, optimising the compromise between service life and costs.

The result is a balanced chemical composition that provides adequate hardness and excellent impact strength.

This mix of properties allows resistance to thermal fatigue and more defect-tolerant behaviour than other commercial shells.