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ANSWER:HX220YD is a steel grade in European standard EN10346, HX220YD is cold forming quality material with high proof strength , The material No. of HX220YD is 1.0923. HX220YD is the steel whose composition is controlled to achieve improve plastic strain ratio r and strain hardening exponent n values
+AZ means Application of an Aluminium-zinc coating by immersing the prepared strip in a molten bath of Aluminium-zinc-silicon. The composition of the bath is 55% of aluminium,1.6% of silicon and the balance zinc. So HX220YD+AZ means hot dip Aluminium-Zinc coated, cold forming quality material with high proof strength.
HX220YD+AZ material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HX220YD+AZ steel coating finish is N(Normal spangle) or M(Minimized spangle)
HX220YD+AZ steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HX220YD+AZ steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
HX220YD+AZ steel Coating mass are: AZ100, AZ150, AZ185
HX220YD+AZ steel mechanical property:
Proof strength should be 220-280MPa
Tensile strength should be 340-420MPa
Elongation A80 should be not less than 32%
Plastic strain ratio r90 should be not less than 1.5
Strain hardening exponent n90 should be not less than 0.17
