DS EN 3972:2007 Aerospace Series - Steel Fe-Pl1507 (40Crmov12) - Consumable Electrode Remelted - Hardened And Tempered - Bar For Machining - D[E] <= 50 Mm - 1250 Mpa <= R[M] <= 1400 Mpa Defines the requirements relating to: Steel FE-PL1507 (40CrMoV12) - Consumable electrode remelted - Hardened and tempered - Bar for machining D[e] <= 50 mm - 1250 MPa <= R[m] <= 1400 MPa for aerospace