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ANSWER:DX51D is a steel grade in European standard EN10346, DX51D is bending and profiling quality steel material, The material No. of DX51D is 1.0917. DX51D's Carbon composition content is less than 0.18%, it belongs to low carbon material, used for cold forming.
+ZM means Hot-dip Zinc-magnesium alloy coated, application of a Zinc-magnesium coating by immersing the prepared strip in a molten bath of zinc-aluminum-magnesium. The composition of the bath is sum of aluminium and magnesium from 1.5%-8%, containing minimum of 0.2% magnesium and the balance zinc. So DX51D+ZM means hot dip Zinc-magnesium coated, low carbon for cold forming, bending and profiling quality, Flat product steel.
DX51D+ZM material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
DX51D+ZM steel coating finish is N(Normal spangle) or M(Minimized spangle)
DX51D+ZM steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
DX51D+ZM steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
DX51D+ZM steel Coating mass are: ZM060, ZM070, ZM080,ZM090,ZM100,ZM120, ZM130, ZM140, ZM150, ZM160, ZM175, ZM190, ZM200, ZM250, ZM300, ZM310, ZM350, ZM430,
DX51D+ZM steel mechanical property:
Tensile strength should be between 270-500MPa
Elongation A80 should be not less than 22%
