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ANSWER:HCT600C is a steel grade in European standard EN10346 ,HCT600C is complex-phase quality steel material for cold forming (the steel with a multiphase microstructure containning mainly bainite, ferrite, whereas martensite, tempered martensite, retained austenite and pearlite may be present as additonal phases ), The material No. of HCT600C is 1.0953.
+Z means hot dip Zinc coating. The zinc content is at least 99% . So HCT600C+Z means hot dip zinc coated, structural material steel.
HCT600C+Z material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HCT600C+Z steel coating finish is N(Normal spangle) or M(Minimized spangle)
HCT600C+Z steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HCT600C+Z steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
HCT600C+Z steel Coating mass are: Z60/Z80/Z100/Z410/Z200/Z225/Z275/Z350/Z450/Z600
HCT600C+Z steel mechanical property:
Yield strength should be 350-500MPa
Tensile strength should be not less than 600MPa
Elongation A80 should be not less than 16%
Bake hardening index BH2 should be mot than than 30MPa