Properties

Properties


Mechanical properties

The available grades have the following mechanical properties - these are measured perpendicular to the rolling direction (transverse test pieces):
 

Micro-alloyed grades

EN 10268: 2006+A1:2013 Grade HSLA340
Yield strength Rp0,2 1 N/mm2 340 - 420
Tensile strength Rm N/mm2 410 - 510
Elongation 2 % 21
Min. r-value r90 3   -
Min. n-value n90   -
1. If the yield strength is pronounced (yield flag), the values apply to the lower yield point (ReL).
2. When thickness ≤ 0.7mm, the minimum value for elongation is reduced by 2%.
   Elongation after fracture A uses test piece length L0 = 80 mm.
3. For products with thickness > 2mm the minimum r90 is reduced by 0.2.
 

Chemical composition

Cold-rolled high-strength steels supplied by Tata Steel comply to the following cast analysis with maximum values unless otherwise shown:
 

Micro-alloyed grades

EN 10268:2006+A1:2013 Grade HSLA340
C Max. 0.12
Mn Max. 1.5
Si Max. 0.5
P Max. 0.030
S Max. 0.025
Al Min. 0.015
Ti 1 Max. 0.15
Nb 1 Max. 0.09
1. These additional elements may be used individually or in combination where they appear in the definition of the steel within the composition limits indicated. Vanadium and boron may also be added. However, the sum of the contents of these four dispersoidal elements shall not exceed 0.22%.
All values are in weight%.