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Aluminised Steel Sheet can be processed in a variety of methods, but it is essentially cold rolled steel coated or hot ‘dipped’ in aluminium. The aluminium infuses into the steel producing a multiple-layered sheet. A secondary and controlling ingredient, silicon, is added to the dip bath to ensure the aluminium layer is as thin as possible. This hot dipping stage is followed by air drying.
One of the primary purposes is to produce a sheet that has combined aluminium and steel properties. This hot dipped overlay or finish provides the steel added anti-corrosive protection. Although its strength is superior to ordinary steel sheet, its finish is silky smooth to touch with shiny characteristics
Coating Layers
Types of steel sheets are categorized by the components of the molten pot. Applications are as follows.
Two types of hot-dip are used (Type 1 and Type 2). The full characteristics of aluminized steel are defined by the exact metals used, as well as the processes (Type) used to produce the material.
Type 1 is hot-dip coated with a thin layer of aluminum / silicon alloy that has anywhere from 5% - 11% silicon. The silicon provides improved adhesion of the layers. Type 1 aluminized steel is designed for applications where heat resistance and corrosion resistance are needed. Physical Properties of Aluminized Steel are defined by the exact metals used, as well as the processes used to produce the material.
Type 2 is hot-dipped in commercially pure aluminum. Type 2 is designed for use where atmospheric corrosion resistance is needed.
Typical Uses
Type 1 - Hot-dip coated with a thin layer of aluminum/silicon alloy:
Mufflers
Furnaces
Ovens
Ranges
Water Heaters
Baking Pans
Type 2 - Hot-dip coated with commercially pure aluminum:
Corrugated Roofing/Siding
Grain Bins
Drying Ovens
Air-conditioner condenser housings
Aluminized Steel Sheet Type 1 Sizes
Dimensions: widths 1000/1220/1500 mm, lengths 2000/2500/3000 mm.
Size (in Inches) |
Size (in mm) |
||
.125″ |
.875″ |
3.18 |
22.2 |
.134″ |
1″ |
3.40 |
25.4 |
.156″ |
1.125″ |
3.96 |
28.6 |
.187″ |
1.250″ |
4.75 |
31.8 |
.250″ |
1.500″ |
6.35 |
38.1 |
.312″ |
1.750″ |
7.92 |
44.5 |
.375″ |
2″ |
9.53 |
50.8 |
.500″ |
2.500″ |
12.7 |
63.5 |
.625″ |
3″ |
15.9 |
76.2 |
.750″ |
|
19.1 |
|
Aluminized Steel Type 1 Plate Thickness
0.6 mm |
0.8 mm |
1.0 mm |
1.2 mm |
1.5 mm |
1.6 mm |
1.8 mm |
2.0 mm |
3.0 mm |
4.0 mm |
5.0 mm |
6.0 mm |
8.0 mm |
10.0 mm |
12.0 mm |
15.0 mm |
20.0 mm |
25.4 mm |
Type 1 Aluminized Steel Type 1 Plate Gauge Chart
The following size chart lists is the approximate decimal equivalents for metal gauges along with standard tolerances. Also please note that industry standard permits deviations from nominal thicknesses.
|
NOMINAL DECIMAL |
STANDARD VARIANCE FROM |
SHEET METAL GAUGE |
(APPROXIMATE INCHES) |
NOMINAL DECIMAL (+/- INCHES) |
7 |
0.1793 |
0.0080 |
8 |
0.1644 |
0.0080 |
9 |
0.1495 |
0.0080 |
10 |
0.1345 |
0.0070 |
11 |
0.1196 |
0.0050 |
12 |
0.1046 |
0.0050 |
13 |
0.0897 |
0.0050 |
14 |
0.0747 |
0.0040 |
15 |
0.0673 |
0.0040 |
16 |
0.0598 |
0.0030 |
17 |
0.0538 |
0.0030 |
18 |
0.0478 |
0.0030 |
19 |
0.0418 |
0.0030 |
20 |
0.0359 |
0.0030 |
21 |
0.0329 |
0.0025 |
22 |
0.0299 |
0.0020 |
23 |
0.0269 |
0.0020 |
24 |
0.0239 |
0.0020 |
25 |
0.0209 |
0.0015 |
26 |
0.0179 |
0.0015 |
28 |
0.0149 |
0.0010 |
Aluminized Steel Type 2 Sheet Sizes
Dimensions: widths 1000/1220/1500 mm, lengths 2000/2500/3000 mm.
Size (in Inches) |
Size (in mm) |
||
.125" |
.875" |
3.18 |
22.2 |
.134" |
1" |
3.40 |
25.4 |
.156" |
1.125" |
3.96 |
28.6 |
.187" |
1.250" |
4.75 |
31.8 |
.250" |
1.500" |
6.35 |
38.1 |
.312" |
1.750" |
7.92 |
44.5 |
.375" |
2" |
9.53 |
50.8 |
.500" |
2.500" |
12.7 |
63.5 |
.625" |
3" |
15.9 |
76.2 |
.750" |
|
19.1 |
|
0.6 mm |
0.8 mm |
1.0 mm |
1.2 mm |
1.5 mm |
1.6 mm |
1.8 mm |
2.0 mm |
3.0 mm |
4.0 mm |
5.0 mm |
6.0 mm |
8.0 mm |
10.0 mm |
12.0 mm |
15.0 mm |
20.0 mm |
25.4 mm |
Grade and Symbol
Mechanical Properties