DS EN 4659:2011 Aerospace Series - Steel Fe-Pm1507 (X1crnimoalti12-11-2) - Vacuum Induction Melted And Consumable Electrode Remelted - Solution Treated And Precipitation Treated - Forgings - A Or D <= 200 Mm - R[M] >= 1650 Mpa Defines the requirements relating to: Steel FE-PM1507 (X1CrNiMoAlTi12-11-2) Vacuum induction melted and consumable electrode remelted Solution treated and precipitation treated Forgings a or D <= 200