What Is EN10219?

EN10219 stands for the European Standard of Cold formed welded structural hollow sections of non-alloy and fine grain steels.

1. Definitions

The following definitions are in addition to or where they differ from those in EN 10020, EN 10021, 10052, EN 10204, and EN 10266 for the purposes of this European Standard.

(1) cold forming

a method where the primary forming is carried out at room temperature.

(1) normalizing rolling

a rolling procedure where the final deformation is carried out within a specific temperature range, resulting in a material condition identical to that attained after normalization, preserving the set values of the mechanical properties even after normalization.

(2) thermomechanical rolling

a rolling procedure that results in a material condition with certain qualities that cannot be obtained or replicated with heat treatment alone. The final deformation is carried out in a specific temperature range. The strength levels may decrease with additional heating above 580 °C.

2. Classification and designation

(1) Classification

Three qualities—JR, J0, and J2—are specified within the non-alloy steel's strength grades, which are listed in Annex A. The inspection and testing standards, as well as the restrictions on values of various elements, particularly with regard to sulfur and phosphorus, are different. S235 is non-alloy base steel according to the EN 10020 classification system, while the other steel grades in annex A are non-alloy quality steel.

Four qualities are listed under the strength classes of the fine grain steels in annex B: N, NL, M, and ML. Regarding their carbon, sulfur, and phosphorus contents as well as their low-temperature impact qualities, these are different. Steel grades S275 and S355 are non-alloy quality steels while steel grades S420 and S460 are special alloy steels, respectively, according to the categorization system in EN 10020.

(2) Designation

The steel names are assigned for the products covered by this European Standard in line with EN 10027-1 and CR 10260, and the steel numbers are assigned in accordance with EN 10027-2.

For non-alloy steel structural hollow sections the designation shall consist of the following:

± the number of this European Standard (EN 10219);

± the capital letter S for structural steel;

± the indication of the minimum specified yield strength for thicknesses # 16 mm expressed in N/mm 2 ;

± the capital letters JR for the qualities with specified impact properties at room temperature; or

± the capital letter J and a number 0 or 2 for the qualities with specified impact properties at 0 ÊC and 220 ÊC respectively;

± the capital letter H to indicate hollow sections.

For fine-grain steel structural hollow sections the designation shall consist of the following:

± the number of this European Standard (EN 10219);

± the capital letter S for structural steel;

± the indication of the minimum specified yield strength for thicknesses # 16 mm expressed in N/mm 2 ;

± the capital letter N to indicate normalized or normalized rolled feedstock material (see 6.3);

± the capital letter M to indicate thermomechanically rolled feedstock material (see 6.3);

± the capital letter L for the qualities with specified minimum values of impact energy at a temperature of 250 ÊC;

± the capital letter H to indicate hollow sections.