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DX51D+AZ Competive Price Anti finger Galvalume Steel Sheet Coils, Aluzinc Steel Strip Coil
Description:
Corrosion of the coating for the 55Al-Zn product is therefore not the uniform-thinning process as it is for a galvanized coating. During the early stages of the product life, the aluminum-rich dendrites stay fairly much unaffected in most environments. In a sense, the aluminum-rich dendrites perform like a barrier coating, while the zinc-rich areas provide the galvanic protection that is needed to minimize the tendency for rust staining at sheared edges and other areas of exposed steel. Because the corrosion resistance depends very much on the microstructural features of the coating, it is more important to have the right microstructure than a thick coating. It has been found that in order to achieve the desired microstructure during production, the coating thickness must not be too thin. For this reason, the most common coating designations for product to be used outdoors in the environment are AZ50, AZ55, and AZ60, as described in ASTM A792/A 792M Specification. The AZ50 coating is approximately as thick as a G90 galvanized coating.
Galvalume Steel sheet /coil features:
1. AL55%-ZN coating :50-185g/m2( as required)
2. Thickness:0.12-1.3mm
3. Width:600-1250mm(914mm,1220mm,1250mm,1000mm the most common)
4. Coil id:508/610mm
5. Coil weight: 3-7MT(as required)
6. Surface:chromium free passivation, chromium passivation, fingerprint resistant, oiled, color coated
7. Temper: G550, G350 , Yield Strength 550 Mpa , or 350 Mpa , or 300 Mpa
8. Standard: ASTM A653, JIS G3302, GB/T3830-2006
Application of galvalume steel coils
Architecture: Roofs and outside walls of civilian and industrial buildings, garage doors, fencings and window blinds
Appliances Industry: Outer clad sheets for washing machine, refrigerator, television, air conditioner and ventilation system, explosion-proof strip, solar water heater and appliance parts
Auto Industry: Muffler, heat shields of exhaust pipe and catalytic converter, auto parts & accessories under the frame, signboard in highway.
Industrial Instruments: Electric control cabinet, industrial refrigeration equipment, automatic vending machine
Competitive Advantage:
Pre-sale Service
1. Sample can be offered at free charge if quanity is not too much.
2. We have stocks at sometimes for some special sizes,and can deliver within short time.Many styles for your choices.
