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ANSWER:S450GD is a steel grade in European standard EN10346, S450GD is bending and profiling quality steel material, The material No. of S450GD is 1.0233. S450GD's Carbon composition content is less than 0.18%, it belongs to low carbon material, used for cold forming.
+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 S450GD+ZA means hot dip Zinc-aluminium coated, low carbon for cold forming, bending and profiling quality, Flat product steel.
S450GD+ZA material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
S450GD+ZA steel coating finish is N(Normal spangle) or M(Minimized spangle)
S450GD+ZA steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
S450GD+ZA steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
S450GD+ZA steel Coating mass are: ZA095, ZA130, ZA185, ZA200, ZA255, ZA300
S450GD+ZA steel mechanical property:
Yield strength should be not less than 450MPa
Tensile strength should be not less than 510MPa
Elongation A80 should be not less than 14%
