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Hot Dip Zn-AL-MG Alloy Coated Steel

Hot Dip Zn-AL-MG Alloy Coated Steel

  • Hot Dip Zn-AL-MG Alloy Coated Steel

OVERVIEW OF ZAM ALLOY COATED STEEL

Hot-dip Zn-AL-MG alloy coated steel, also known as ZAM steel, is a new type of coating product. The zinc-aluminium-magnesium coating is a ternary alloy coating with zinc as the main component, and the content of aluminium and magnesium is between 1.5-8% (among which the magnesium content is not less than 0.2%). The magnesium in the coating is beneficial to promoting the formation of a very stable and well-organized and meticulous protective film, namely Hydrozincite ((Zn5 (OH)8Cl2 ‧H2O), which generates and maintains a film-like covering on the surface of the coating, thereby ensuring excellent corrosion resistance. Compared with traditional coatings such as GI and Aluzinc, ZAM alloy-coated steel is known for its superior corrosion resistance, formality, wear and scratch resistance and can be applied in a wide range of fields such as automotive, HAVC, solar photovoltaics, agriculture, high-speed guardrails, electrical cabinets, greenhouse structures, etc.


Features of Hot Dip Zn-AL-MG Alloy Coated Steel

  • 1

    Superior corrosion resistance: With the addition of MG and AL content, ZAM alloy coated steel has superior corrosion resistance. The planar corrosion resistance of ZAM coating is about 3 times that of GI coating.

  • 2

    Formability: The coefficient of friction of the ZAM coating is 15% lower than that of the GI coating, and it remains stable during reciprocating friction, giving it excellent formability.

  • 3

    Cost Reduction: An excellent alternative to much more costly materials such as aluminum and stainless steel.


PARAMETER OF ZAM ALLOY COATED STEEL



Standard

JIS/ASTM/EN

Content

Low AL&MG :  Zn-(0.5-3%) Al-(0.4-2%)Mg

Mid AL&MG:    Zn-(3-13%) Al-(2-4%)Mg

High AL Mid MG:  Zn-(50-60%) Al-(2-4%)Mg

Grades

DX51D+ZM/DX52D+ZM/DX53D+ZM

S220GD+ZM/S250GD+ZM/S280GD+ZM/S320GD+ZM/S350GD+ZM

S400GD+ZM/S550GD+ZM

HD300LAD+ZM/HD340LAD+ZM/HD380LAD+ZM

HD420LAD+ZM/HD460LAD+ZM/HD500LAD+ZM/HD550LAD+ZM/HD700LAD+ZM

SGMCC+ZM/SGHCD+ZM/SGH340D+ZM/SGH400D+ZM/SGH490D+ZM/SGH540D+ZM

Coating

ZM20-ZM600g/m2

Spangle

Regular spangle/ Zero spangle

Sizes

Thickness 0.8-4.5mm

Width: 750-1600mm



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