Aerospace series - Steel X2NiCoMo18-8-5 (1.6359) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Plates - 6 mm < a <= 40 mm - 1750 MPa <= Rₘ ≤ 2000 MPa (Endorsed by Asociación Española de Normalización in October of 2025.)