Zinc Aluminium Coated Metal Galvalume Steel Coils
1.Introduction:
Zinc aluminum coated steel coils are mostly used in construction for prefabricated house or roof and wall system as protective building materials, it is composed of aluminum-zinc alloy and consists of 55% aluminum, 43% zinc and 2% silicon solidified at 600 °C.
2.Characteristics:
(1)Anti corrossion
Hot dipped galvalume steel has many excellent property of corrosion resistance, which is 3 times that of pure galvanized sheet; the beautiful surface make it popular being used as exterior wall board or cladding.
(2)Heat resistance
The aluminum-zinc alloy coated steel plate has good heat resistance and can withstand a high temperature of more than 300 degrees Celsius. So it is usually used in Roofing sheets, Chimney tubes, ovens, illuminators, fluorescent shades.
(3)Heat reflectivity
Aluzinc galvalume steel has a high heat reflectivity, which is twice that of galvanized steel sheets, so it is often used as heat insulation materials.
3.Technique of Production:
The hot dip galvalume technique offer steel substrate a highly corrossion resistance aluminum zinc alloy coatings, which consists of 55% Aluminium, 43.5% Zinc and 1.5% Silicon, this technique has been extensively researched and the proven performance surpasses that of traditional galvanised steel.
4.Advantages:
- Light weight yet very strong;
- Highly versatile and widely used;
- Thermally efficient;
- Fire resistant;
- Eco friendly and green;
- Considerable increase in service life;
- Superior thermal performance;
- Lasting aesthetic value.
5.Applications:
Buildings: roofs, walls, garages, soundproof walls, pipes and modular houses, etc.
Automobiles: muffler, exhaust pipe, wiper attachment, fuel tank, truck box, etc.
Home appliances: refrigerator backboard, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof tape, LED backlight, electrical cabinet, etc.
Agricultural: pig houses, chicken houses, granaries, green house pipes, etc.
Other: heat insulation cover, heat exchanger, dryer, warmer, etc.
Specification of Galvalume Steel Coils:
Technical Standard |
ASTM DIN GB JIS3302 |
Grade |
SGCC SGCD or Customer's Requirement |
Type |
Commercial Quality/DQ |
Thickness |
0.13mm-4.0mm |
Width |
600mm-1500mm |
Type of Coating |
Hot Dipped Galvalume |
Zinc Coating |
30-180g/m2 |
Surface Treatment |
Anti finger treatment/Passivation/skin pass/non-oiled/oiled |
Color Painted |
Any Ral color can be painted by high tech |
ID |
508mm |
Coil Weight |
3-10metric ton per coil |
Package |
Standard export package or customized |
Hardness |
HRB50-71 ( CQ Grade ) |
HRB45-55 ( DQ Grade ) |
Yield Strength |
140-300 (DQ Grade) |
Tensile Strength |
270-500 (CQ Grade) |
270-420 (DQ Grade) |
Elongation Percentage |
22 (CQ Grade thickness less 0.7mm) |
24 (DQ Grade thickness less 0.7mm) |
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