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ANSWER:HX500LAD is a steel grade in European standard EN10346, HX500LAD+ZA is low alloy/micro-alloyed quality steel material (the steel containing one or more of alloying elements Nb, Ti and V achieve required proof strength levels ), The material No. of HX500LAD is 1.0991.
+ZA means Hot-dip Zinc-aluminium alloy coated, application of a Zinc-aluminium coating by immersing the prepared strip in a molten bath of zinc-aluminum-aluminium. The composition of the bath is approximately 5% aluminum, small amounts of mischmetal and the balance zinc. So HX500LAD+ZA means hot dip Zinc-aluminium coated, cold forming quality material with low alloy/micro-alloyed quality.
HX500LAD+ZA material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
HX500LAD+ZA steel coating finish is N(Normal spangle) or M(Minimized spangle)
HX500LAD+ZA steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
HX500LAD+ZA steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
HX500LAD+ZA steel Coating mass are: ZA095, ZA130, ZA185, ZA200, ZA255, ZA300
HX500LAD+ZA steel mechanical property:
Proof strength should be 500-620MPa
Tensile strength should be 530-690MPa
