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ANSWER: EN10338 is the European standard applies to hot rolled and cold rolled non-coated steel flat products made of multiphase steels for cold forming. It covers cold rolled steel products of thickness t less than 3mm and hot rolled products of thickness t not more than 6mm.
EN10338 HCT780T is cold rolled non coated steel flat material made of multiphase steel for cold forming.
HCT780T is transformation induced plasticity quality steel, means steel with a ferritic matrix containing retained austenite capable of transformation into martensite during the forming process (TRIP effect). The delivery condition of HCT780T is normally supplied in the skin-passed condition.
The material of No. Of HCT780T is 1.0948.
Proof strength of HCT780T is 450-570MPa, Tensile strength is min 780MPa, Elongation A80 is min 21%. Strain hardening exponent n: min 0.16. Bake hardening index BH2 is min 40MPa.
