Properties

Properties


Mechanical properties

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

Bake-hardening grades

EN10338: 2010 Grade HC220B
Yield strength Re 1 N/mm2 220 - 270
Tensile strength Rm N/mm2 320 - 400
Elongation % 32
Min. r-value r90 3   1.5
Min. n-value n90   0.16
Min. BH2 N/mm2 35
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:
 

Bake-hardening grades

EN 10338, 2010 Grade HC220B
C Max. 0.08
Mn Max. 0.7
Si Max. 0.5
P Max. 0.085
S Max. 0.025
Al Min. 0.015
Ti Max. -
Nb Max. -
All values are in weight%.