4.1 Numerical designation For the designation of the steels defined in this standard, the numerical designation included in tables 2, 4, 5 and 6 will preferably be used (in accordance with the UNE 36-009 standard). 4.2 Symbolic designation The symbolic designation can also be used, also included in tables 2, 4, 5 and 6, assigned in accordance with the rules established in the UNE 36-009 standard, followed by the letters DF indicative of its specific aptitude for deformation. in cold. 4.3 In both cases, the designation of the steel will follow the reference of this standard Examples: F 1211 UNE 36-034-85 41 Cr4 DF UNE 36-034-85 NOTE — In steel F 1209, which is not alloyed according to the standard UNE 36-004, its designation has been assimilated to that of alloy steels, due to its high manganese content.