Tel : 0086-0371-86172891
Tel : 0086-0371-86172891
ASK:
ANSWER:HCT780T+ZF is a hot dip Zinc-iron coated steel grade in European standard EN10346 ,HCT780T+ZF is transformation induced plasticity quality steel material for cold forming (the steel with a ferritic matrix containing retained austenite capable of transformation into martensite during the forming process-TRIP effect ), The material No. of HCT780T+ZF is 1.0948+ZF.
+ZF means hot dip Zinc-iron coating. The zinc content of the bath is at least 99%, or the annealing produces and iron-zinc coating with an iron content of normally 8%-12%. So HCT780T+ZF means hot dip zinc-iron coated, transformation induced plasticity quality steel material for cold forming .
HCT780T+ZF material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HCT780T+ZF steel coating finish is N(Normal spangle) or M(Minimized spangle)
HCT780T+ZF steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HCT780T+ZF steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
HCT780T+ZF steel Coating mass are: ZF100, ZF120
HCT780T+ZF steel mechanical property:
Yield strength should be 450-570MPa
Tensile strength should be not less than 780MPa
Elongation A80 should be not less than 21%
Strain hardening exponent should be not less than 0.16
Bake hardening index BH2 should be mot than than 40MPa
