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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 HCT450X is cold rolled non coated steel flat material made of multiphase steel for cold forming.
HCT450X is dual-phase quality steel, means steel consisting of mainly ferrite and martensite and possible bainite as a complementary phase. The delivery condition of HCT450X is normally supplied in the skin-passed condition.
The material of No. Of HCT450X is 1.0937.
Proof strength of HCT450X is 260-340MPa, Tensile strength is min 450MPa, Elongation A80 is min 27%. Strain hardening exponent (n) is min 0.16, Bake hardening index BH2 is min 30MPa.
