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ANSWER:S220GD is a steel grade in European standard EN10346, S220GD is construction quality steel material, The material No. of S220GD is 1.0241.
+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 S220GD+AZ means hot dip Aluminium-Zinc coated, structural quality, Flat product steel.
S220GD+AZ material steel have coil, strip, sheet condition, thickness is from 0.2mm-3mm.
S220GD+AZ steel coating finish is N(Normal spangle) or M(Minimized spangle)
S220GD+AZ steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
S220GD+AZ steel Surface treatment C (chemically passivated) , O (oiled), CO (chemically passivated and oiled) , P (phosphate) , PO (phosphate and oiled), S (sealed)
S220GD+AZ steel Coating mass are: AZ100, AZ150, AZ185
S220GD+AZ steel mechanical property:
Yield strength should be not less than 220MPa
Tensile strength should be not less than 300MPa
Elongation A80 should be not less than 20%
