The available grades have the following mechanical properties - these are measured perpendicular to the rolling direction (transverse test pieces):
|Yield strength Re 1||N/mm2||220 - 270|
|Tensile strength Rm||N/mm2||320 - 400|
|Min. r-value 3||1.3|
|Min. n-value n90||0.16|
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.
Cold-rolled high-strength steels supplied by Tata Steel comply to the following cast analysis with maximum values unless otherwise shown: