Metallic coated high-strength steel grades have the following mechanical properties (skin-passed) - these are measured transverse to the rolling direction. Property range is indicated according to EN 10346, but properties meet equivalent VDA 239-100 specifications also.
|Yield strength ReL||N/mm2||220 - 280|
|Tensile strength Rm||N/mm2||320 - 400|
|Min. r-value r90||1.2|
|Min. n-value n90||0.15|
Lower yield strength or 0.2% proof stress applies.
BH2 refers to the increase of 0.2% proof stress after heating (bake hardening). Not applicable for hot rolled substrate.
Elongation after fracture A uses test piece length L0 = 80 mm.
For galvannealed grades (GA) the minimum elongation before fracture is lowered by 2%.
For galvannealed grades (ZF) the minimum r90-value is lowered by 0.2.
Tata Steel supplies the following cast analysis with maximum values unless otherwise shown: