Tel : 0086-0371-86172891
Tel : 0086-0371-86172891
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ANSWER:HCT690T is a steel grade in European standard EN10346 ,HCT690T 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 HCT690T is 1.0947.
+Z means hot dip Zinc coating. The zinc content is at least 99% . So HCT690T+Z means hot dip zinc coated, structural material steel.
HCT690T+Z material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HCT690T+Z steel coating finish is N(Normal spangle) or M(Minimized spangle)
HCT690T+Z steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HCT690T+Z steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
HCT690T+Z steel Coating mass are: Z60/Z80/Z100/Z410/Z200/Z225/Z275/Z350/Z450/Z600
HCT690T+Z steel mechanical property:
Yield strength should be 400-520MPa
Tensile strength should be not less than 690MPa
Elongation A80 should be not less than 23%
Strain hardening exponent should be not less than 0.19
Bake hardening index BH2 should be mot than than 40MPa
