DS EN 4657:2010 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 - R[M] >= 1650 Mpa Describes the requirements relating to: Steel FE-PM1507 (X1CrNiMoAlTi12-11-2) - Vacuum induction melted and consumable electrode remelted - Solution treated and precipitation treated - Bars - a or D <