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Hot Dip Al-Zn Alloy Coated Sheet

This kind of hot dip Al-Zn coated sheet can be divided into two types according to different aluminum contents: coated galvalume sheet and coated galfan sheet.
The coated galvalume sheet is mainly used in roofs, side walls, cars, household appliances, and painting work. Its coating consists of 55% aluminum, 43.4% zinc and 1.6% silicon.
The coating of the coated galfan sheet is comprised of 5% aluminum, zinc and 0.05% rare earth metal mixture of cerium and lanthanum.


1.Its superior corrosion resistance is 6 to 8 times that of general galvanized sheets, and it can stay free from rust as long as 20 years.
2.It has strong high temperature oxidation resistance, so there is no discoloration or deformation even at the temperature of 315 ° C.
3.Its heat reflectivity is higher than 75%, which is 2 times that of the galvanized sheet.
4.It is easy to process, and punching, shearing and bending are all available for it.
5.This hot dip Al-Zn alloy coated sheet is designed with beautiful silvery white snowflake patterns, so it can be directly used without painting.
6.Surface spraying can be used in this kind of sheet, and composite coatings of alloys and organic matters can provide better protection for it.
7.1000ton hot dip Al-Zn alloy coated sheet is equivalent to 1050ton 0.3mm-thickness galvanized steel sheet, equivalent to 1035ton 0.5mm-thickness galvanized steel sheet, and equivalent to 1025ton 0.7mm-thickness galvanized steel sheet.

Technical Parameters:

Application grade Grade code Chemical composition(mass fraction)/% (less than)
General purpose use 01 0.15 0.60 0.035 0.035
Mechanical occlusion 02 0.12 0.60 0.035 0.035
Punching 03 0.12 0.50 0.030 0.030
Deep-drawing 04 0.10 0.45 0.025 0.025
Structure G550 0.25 1.70 0.05 0.035

Conventional Indicators of Hot Dip Al-Zn Alloy Coated Sheet:

Thickness range range Max. zinc content(double-side g/m2) Inner diameter
0.15-0.8mm 900-1250mm 180 508mm
Coil weight Packaging Surface structure Surface Treatment
3-6ton Fine packaging Zero spangle/ small spangle/ normal spangle Fingerprint resisting, environmental passivation, oiling, finishing

About Changsong:

As a professional manufacturer of hot dip Al-Zn alloy coated sheet in China, Changzhou Changsong Metal Composite Material Co., Ltd still provide many other steel sheets for clients worldwide, such as freezer coated sheet, air conditioner coated sheet, refrigeration storage coated sheet, solar heater coated sheet, etc. Our products are widely used in the production lines of white goods and black appliances, such as building materials, decorative materials, and the like. If you're interested in our hot dip Al-Zn alloy coated sheet, please contact us freely.