BS EN 4721. Aerospace series. Steel FE-PM 3504 (X4CrNiMo16-5-1). Air melted and electroslag remelted (ESR). Hardened and tempered. Bar. De < 200 mm. 900 MPa < Rm < 1050 MPa
Aerospace series. Steel X4CrNiMo16-5-1 (1.4418). Air melted and electroslag remelted (ESR). Hardened and tempered. Bar. De ≤ 200 mm. 900 MPa ≤ Rm ≤ 1 050 MPa
BS EN 4721. Aerospace series. Steel FE-PM 3504 (X4CrNiMo16-5-1). Air melted and electroslag remelted (ESR). Hardened and tempered. Bar. De < 200 mm. 900 MPa < Rm < 1050 MPa