|
AZ is 55% aluminum-zinc coated steel sheet. AZ is highly heat and corrosion resistant, combining the properties of aluminum which renders increased durability, excellent heat resistance,
and formability, and those of zinc which offers high heat resistance and excellent corrosion protection. AZ is three to six times more corrosion resistant than regular zinc coated steel
sheet, with a 20-year warrantee for residential use.
|
|
|
|
Composition of Coated Layers
|
|
|
|
Composition
|
Weight Ratio (%)
|
Capacity Ration (%)
|
|
Aluminum
|
55.0
|
80
|
|
Zinc
|
43.4
|
19
|
|
Silicon
|
1.6
|
1
|
|
|
|
|
Product Features
|
|
|
|
Excellent Durability
|
|
AZ is three to six times more corrosion resistant than zinc coated steel sheet of the same thickness. AZ is backed by a 20-year warrantee for residential use.
|
|
|
|
Heat Resistance
|
|
The portion of the aluminum in the coated layer of AZ is high at over 80%. AZ will withstand a prolonged temperature of 315 degrees Celsius without discoloration or oxidization.
|
|
|
|
Heat Reflectivity
|
|
AZ is highly energy efficient, with superior heat reflection and low heat consumption.
|
|
|
|
Smooth surface
|
|
AZ is available in a delicate light silver spangle, so it is appropriate for decorative use.
|
|
|
|
Economically efficient
|
|
Available in widths of five feet (MAX 1600), AZ reduces the loss and suitable to duct and construction.
|
|
|
|
Excellent Paintablity
|
|
Paint is highly adhesive to the coated layer of AZ steel sheet, compared to galvanized steel plates.
|
|
|
|
Excellent Workability
|
|
The workability of AZ is similar to that of galvanized steel sheet. Its ability to suppress fine cracks on the coating layer enhances the durability of the treatment area.
|
|
|
|
Classification By Post-treatment
|
|
|
|
Classification
|
Chromate
|
No Chromate (+ Oiling)
|
Chromate + Oiling
|
No Chromate + Organic Coating
|
|
APPLICATION
|
Construction,
Automotive Components
|
Pre-painting
|
Exportation
|
Roll Forming
|
|
|
|
|
Product Performance
|
|
|
|
Heat Resistance
|
|
The portion of the aluminum in the coated layer of AZ is high at over 80%, AZ will withstand a prolonged temperature of 315 degrees Celsius without discoloration or oxidization.
|
|
|
|
Rate of oxidization from continuous heat
|
|
Test Adhesion
|
Material Thickness (mm)
|
Weight (g/m2)
|
|
AZ
|
0.6
|
200
|
|
GI
|
0.6
|
350
|
|
|
|
|
Heat Reflectivity
|
|
AZ steel sheet boasts superior heat reflection, which produces increased energy efficiency, making it an excellent material for the interior of electronic home appliances. Used as a roofing
material, AZ will inhibit the rise of a building's temperature, thereby lowering the cost of air conditioning. Food storage buildings made with AZ enjoy the additional benefit of having
stored grains protected from quality change.
|
|
|
|
Comparison of heat reflectivity by product
|
|
PRODUCT
|
AZ
|
Galvanized Steel Sheet
|
Pre-painted Steel Sheet
|
Tile Slate
|
|
Silver
|
Gray
|
Blue
|
Brown
|
|
Heat Reflectivity Ratio (%)
|
70 - 75
|
30 - 40
|
50 - 60
|
45 - 50
|
10 - 15
|
10 - 15
|
10 - 20
|
|
|
|
|
Economical Efficiency
|
|
The density of the coated layer of AZ steel, 3.75g/cm?is smaller than that of galvanized steel (7.14g/cm2, increasing surface area per ton and enhancing the economical
efficiency.
|
|
|
|
>Comparison of coating weight and product weight between galvanized steel and AZ.
|
|
THICKNESS (mm)
|
Area per Ton (m2 / ton)
|
|
AZ
|
GI
|
|
0.40
|
AZ 150
|
391
|
Z 18
|
385
|
|
0.45
|
339
|
328
|
|
0.50
|
299
|
290
|
|
0.60
|
243
|
Z 22
|
236
|
|
0.80
|
204
|
199
|
|
1.00
|
124
|
123
|
|
1.20
|
104
|
Z 27
|
102
|
|
1.60
|
78
|
77
|
|
2.0
|
63
|
62
|
|
|
* theoretical calculation depends on size
|
|
|
|
Paintability
|
|
Paint is highly adhesive to coated layer of AZ steel sheet, compared to galvanized steel plates. AZ used for general purposes does not require pretreatment before painting.
|
|
|
|
Weldability
|
|
The weldability of AZ is similar to that of galvanized steel sheet. Special attention required before welding includes the welding current, time, and electrode pressure.
|
|
|
|
Spot Welding Conditions
|
Thickness
(mm)
|
Electric Current
(A)
|
Pressure
(Kg)
|
Welding Time, Cycle
(1/60 sec)
|
Electrode Diameter
(mm)
|
|
0.56
|
11000
|
160
|
10
|
4.75
|
|
0.71
|
11300
|
180
|
12
|
4.75
|
|
0.91
|
12500
|
230
|
14
|
6.35
|
|
1.02
|
12800
|
230
|
14
|
6.35
|
|
1.35
|
13000
|
250
|
14
|
6.35
|
|
1.65
|
13400
|
300
|
18
|
6.35
|
|
|
|
