Specification

Technical Standard	EN10147/EN10142/DIN 17162/JIS G3302/ASTM A653
Steel Grade	DC51D+AZ, DC52D+AZ, DC54D+AZ, DC53D+AZ, S250GD+AZ, S300GD+AZ, S350GD+AZ, S450GD+AZ, S550GD+AZ
Type	Coil/Sheet/Plate/Strip
Thickness	0.13-2.0mm
Width	25-1500mm
Al-Zn coating	30G ~ 150G/SQM
Spangle	Minimum / Regular Spangle
Standard	EN, JIS, ASTM, GB
MOQ	25T

Product Description

Galvalume steel is also called Aluminum-Zinc Alloy Coated Steel, Zincalume steel, aluminized zinc steel (aluzinc steel), SGLC, The galvalume metal is composed of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at 600 ~C. Its whole structure consists of aluminium-iron-silicon-zinc, forming a compact quaternary crystal alloy. The surface of the galvalume steel sheet is characterized by smooth, flat and gorgeous stars, and its base color is silver white. The special coating structure makes it have excellent corrosion resistance.

Surface Structure

Spangle is formed during the hot-dip galvanizing process. The size, brightness, and surface of spangles mainly depend on the composition of the zinc layer and the cooling method. According to the size, it includes small spangles, regular spangles, big spangles, and free spangles. They look different, but the spangles almost will not influence the quality of galvanized steel. You can choose according to your preference and use purpose.

(1）Spangled galvanized steel sheet is the spangle obtained by the condensation of the zinc coating under normal conditions after galvanizing. It is mainly used in buildings and other places where there is little direct contact with the human body.
(2）Galvanized steel sheets without spangles are mainly produced through a special production process to control the lead in the zinc pot to a certain level, or after the strip steel is out of the galvanized pot, it undergoes special treatment to control the spangles to less than a certain level. Mainly used in home appliance housing