3. Steel designation rules
The European standard NF EN 10027 relating to the steel designation system has come into force, replacing the corresponding national standards.
In France, for example, standard NF A 02-005 is now obsolete and has been replaced since November 20, 1992 by standard NF EN 10027.
This standard consists of two parts:
NF EN 10027-1 : symbolic designation ;
NF EN 10027-2: numerical designation.
It is supplemented by a CEN report CR 10260 (information circular ECISS/IC 10, AFNOR classification index: A 02-005-3) which deals with additional symbols for the symbolic designation of steels.
These additional symbols are those used in addition to the main symbols defined in NF EN 10027-1, when the latter are not...
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Steel designation rules