55% Aluminium-Zinc Alloy Coated Steel (GL) is a flat carbon steel product coated on both sides with an aluminium-zinc alloy. The coating is composed of 55% aluminium, 43.4% zinc and 1.6% silicon and applied by means of a continuous hot dip galvanising process. 55% Aluminium-Zinc Alloy Coated Steel is available in a wide range of steel grades: steels for cold forming and deep drawing applications, and structural steels.
The excellent corrosion resistance of 55% Aluminium-Zinc Alloy Coated Steel is a result of the properties of its two metallic constituents: the barrier effect of the aluminium present on the surface of the coating and the sacrificial protection of zinc.
The characteristic spangled silver colour of 55% Aluminium-Zinc Alloy Coated Steel gives it a very attractive appearance. Thanks to a thin transparent layer of aluminium oxide on the top surface of the coating, this appearance is preserved over time.
55% Aluminium-Zinc Alloy Coated Steel offers additional advantages:
– Good corrosion resistance at high temperatures
– Good abrasion resistance because of its surface hardness
– Excellent thermal and light reflectivity
55% Aluminium-Zinc Alloy Coated Steel coated steels are used widely in both indoor and outdoor applications:
– Construction: roofing, cladding, structural sections, composite panels, tiles etc
– Domestic appliances: washing machines, tumble dryers, refrigerators, toasters, microwave ovens etc
– Miscellaneous: boiler casings, air ducts, electrical cabinets, lighting, computer casings etc
55% Aluminium-Zinc Alloy Coated Steel can be supplied oiled and/or with a chemical surface treatment, or with an thin organic coating.
55% Aluminium-Zinc Alloy Coated Steel Florelis is a product with improved uniformity, with the result that there is no visible difference between the sheets. It is specially designed for facades of buildings with the highest aesthetic requirements.
4.Recommendations for use
55% Aluminium-Zinc Alloy Coated Steel is supplied passivated or oiled to temporarily limit any risk of black rust formation. During transport and storage, all necessary precautions must be taken to keep the material dry and to prevent the formation of condensation. Improved protection can be obtained by the application of an coating.
Forming and joining
The forming and joining techniques currently used for uncoated steel sheets are also suitable for 55% Aluminium-Zinc Alloy Coated Steel.
The coating thickness must therefore be compatible with both the desired degree of corrosion protection and the requirements of the forming and welding processes envisaged. Forming performance is improved if 55% Aluminium-Zinc Alloy Coated Steel is coated with an thin organic coating.
55% Aluminium-Zinc Alloy Coated Steel can be painted after degreasing and surface treatment when delivered oiled. 55% Aluminium-Zinc Alloy Coated Steel coated with an thin organic coating can be painted directly, without any prior surface treatment. However, the paint must be compatible with the resin.
If you are looking for importing 55% Aluminium-Zinc Alloy Coated Steel (GL) from Vietnam, please contact us at:
Mr. Van Loc
Export Dept – Global market
Tel/whatsapp/line: +84 938 162 934
NAM KIM STEEL VIETNAM
Road N1, An Thanh Production Area, Thuan An District,
Binh Duong Province, Vietnam.