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ANSWER : HX220YD is a steel grade in European standard EN10346 ,HX220YD is high strength interstitial free quality steel material (the steel whose composition is controlled to achieve improved plastic strain ratio r and strain hardening exponent n values), The material No. of HX220YD is 1.0923.
+Z means hot dip Zinc coating. The zinc content is at least 99% . So HX220YD+Z means hot dip zinc coated, structural material steel.
HX220YD+Z material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HX220YD+Z steel coating finish is N(Normal spangle) or M(Minimized spangle)
HX220YD+Z steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HX220YD+Z steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate), PO (phosphate and oiled), S (sealed)
HX220YD+Z steel Coating mass are: Z60/Z80/Z100/Z410/Z200/Z225/Z275/Z350/Z450/Z600
HX220YD+Z steel mechanical property:
Yield strength should be 220-280MPa
Tensile strength should be 340-420MPa
Elongation A80 should be not less than 32%
R90 should be not less than 1.5
N90 should be not less than 0.17