Aerospace series - Steel FE-PM3801 (X5CrNiCu17-4) - Air melted, solution treated and precipitation treated, bar a or D up to 200 mm, Rm 930 MPa and above
Aerospace series - Steel FE-PM3901 (X15CrNi17-3) - Air melted - Hardened and tempered - Bar for machining - De up to 200 mm - Rm from 900 MPa up to 1 100 MPa