DS EN 3678:2007 Aerospace Series - Steel Fe-Pm3801 (X5crnicu17-4) - Air Melted - Solution Treated And Precipitation Treated - Forgings - A Or D <= 200 Mm - Rm >= 930 Mpa Describes the requirements relating to: Steel FE-PM3801 (X5CrNiCu17-4) - Air melted - Solution treated and precipitation treated - Forgings a or D <= 200 mm - R[m] >= 930 Mpa, for aerospace applicatio