What’s DX57D+ZM steel ?

ASK:

What's DX57D+ZM steel ?

ANSWER:DX57D is a steel grade in European standard EN10346, DX57D is Super deep drawing quality steel material, The material No. of DX57D is 1.0853. DX57D's Carbon composition content is less than 0.12%, 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 DX57D+ZM means hot dip Zinc-magnesium coated, low carbon for cold forming, Super deep drawing quality, Flat product steel.

DX57D+ZM material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.

DX57D+ZM steel coating finish is N(Normal spangle) or M(Minimized spangle)

DX57D+ZM steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)

DX57D+ZM steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)

DX57D+ZM steel Coating mass are: ZM060, ZM070, ZM080,ZM090,ZM100,ZM120, ZM130, ZM140, ZM150, ZM160, ZM175, ZM190, ZM200, ZM250, ZM300, ZM310, ZM350, ZM430,

DX57D+ZM steel mechanical property:
Yield strength should be between 120-170MPa
Tensile strength should be between 260-350MPa
Elongation A80 should be not less than 41%
Plastic strain ratio R90 should be not less than 2.1
Strain hardening exponent N90 should be not less than 0.22