Metallic coated high-strength steel grades have the following mechanical properties (skin-passed) - these are measured transverse to the rolling direction:
|Yield strength ReL||N/mm2||300 - 360|
|Tensile strength Rm||N/mm2||400 - 480|
Not in EN 10346:2015. Tata Steel’s own specification.
Lower yield strength or 0.2% proof stress applies.
For galvannealed grades (ZF) the minimum elongation before fracture is lowered by 2%.
Elongation after fracture A uses test piece length L0 = 80 mm.
For galvannealed grades (ZF) the minimum r90-value is lowered by 0.2.
Phosphorus-alloyed steels are currently not available with MagiZinc® coatings.
Tata Steel supplies the following cast analysis with maximum values unless otherwise shown: