UNE-EN 4657
Aerospace series - Steel FE-PM1507 (X1CrNiMoAlTi12-11-2) - Vacuum induction melted and consumable electrode remelted - Solution treated and precipitation remelted - Bars - a or D ≤ 200 mm - Rm ≥ 1650 MPa (Endorsed by AENOR in November of 2010.)