PREN 4528-1999 Aerospace Series Steel FE-PA3903 (X12CrNi18-10) Cold Rolled Strip for Springs a Less Than or Equal to 3 mm 1 250 MPa Less Than or Equal to Rm Less Than 1 640 MPa (Edition P1)
2007PREN 4528-2007 Aerospace Series Steel FE-PA3903 (X12CrNi18-10) Cold Rolled Strip for Springs a Less Than or Equal to 3 mm 1 250 MPa Less Than or Equal to Rm Less Than 1 640 MPa (Edition P1)
1999PREN 4528-1999 Aerospace Series Steel FE-PA3903 (X12CrNi18-10) Cold Rolled Strip for Springs a Less Than or Equal to 3 mm 1 250 MPa Less Than or Equal to Rm Less Than 1 640 MPa (Edition P1)