QUALITY Steel Coils
Galvalume Steel Coils - ASTM AZ 120
What is ASTMAZ120 Roofing product?
ASTM AZ120 Galvalume steel coil is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 ° C. The entire structure is composed of aluminum-iron-silicon-zinc to form a dense quaternary crystal. It forms a barrier, thus effectively preventing the penetration of corrosion factors.
Product description
ASTM AZ120 Galvalume steel coil has a unique smooth, flat and Special colors , and the base color is silver white or Coated . The special coating structure makes it have excellent corrosion resistance. The normal service life of the galvanized sheet can reach 25a, the heat resistance is very good, and it can be used in a high temperature environment of 315 ° C; the adhesion between the coating and the paint film is good, and it has good processing performance, which can be punched, sheared, welded, etc.; The surface conductivity is very good.
What is galvalume steel?
The coating composition consists of 55% aluminum, 43.4% zinc, and 1.6% silicon, respectively, by weight. The production process of galvalume steel sheet is similar to that of galvanized steel sheet and aluminized sheet, and it is a continuous molten coating process. The galvanized steel sheet with 55% Al-Zn alloy coating has superior corrosion resistance compared with the galvanized steel sheet of the same thickness when both sides are exposed to the same environment. The galvanized steel sheet with 55% aluminum-zinc alloy coating not only has good corrosion resistance, but also the color-coated products have excellent adhesion and flexibility.
ASTM AZ120 ANTI-FINGER Galvalume steel coil character
1. Heat reflectivity: The thermal reflectivity of galvanized steel sheet is very high, twice that of galvanized steel sheet, and people often use it as a thermal insulation material.
2. Heat resistance: Aluminum-zinc alloy steel plate has good heat resistance and can withstand high temperature of more than 300 degrees Celsius, which is very similar to high-temperature oxidation resistance of aluminized steel plate. Corrosion resistance:
The corrosion resistance of galvanized steel coil is mainly because of aluminum, the protective function of aluminum. When the zinc is worn away, the aluminum forms a dense layer of aluminum oxide, preventing corrosion-resistant substances from further corroding the interior.
3. Economical: Because the density of 55%AL-Zn is lower than that of Zn, the area of the galvanized steel sheet is more than 3% larger than that of the galvanized steel sheet under the same weight and the same thickness of the gold-plated layer.
4. Easy to paint After 2 decades: The galvalume sheet has excellent adhesion to the paint and can be painted without pretreatment and weathering.
The coating adhesion of the gold-plated layer of galvanized steel sheet is relatively good, so it can be directly coated on advertising boards and general-purpose boards without pre-treatment such as Weathering.
5. Galvalume steel sheet has a gorgeous surface of silvery white and many other colors.
6. Galvalume steel sheet and galvanized steel sheet have similar processing performance and spraying performance.
ASTM AZ120 ANTI-FINGER Galvalume steel coil use
Prepainted-steel-coil-use
Automotive: mufflers, exhaust pipes, wiper attachments, fuel tanks, truck boxes, etc.
Home appliances: refrigerator back panel, gas stove, air conditioner, electronic microwave oven, LCD frame, CRT explosion-proof belt, LED backlight, electrical cabinet, etc. Agricultural use: pig house, chicken house, granary, greenhouse pipes, etc.
Others: Thermal insulation cover, heat exchanger, dryer, water heater, etc.
20 years warranty certificate