Description

55% Aluzinc Galvalume Steel Coil, also as known as Aluzinc Steel Coil or Galvalume Steel Coil, is a high-performance metallic material made from cold-rolled steel sheet as the base material, with a double-sided hot-dip galvanized alloy coating containing 55% aluminum, 43.4%–43.5% zinc, and 1.5%–1.6% silicon.

The unique composition and structure of 55% Aluzinc Galvalume Steel Coil endow it with numerous superior properties, making it widely used in construction, home appliances, automobiles, and many other fields.

Common specifications for 55% Aluzinc Galvalume Steel Coil:

Thickness range: 0.4 mm – 2.0 mm (commonly 0.6 mm, 0.8 mm, 1.0 mm)

Width: 1000 mm – 1250 mm (customizable)

Coating weight: AZ150 (150 g/㎡) Aluzinc Galvalume Steel Coil recommended for exterior building applications; AZ100 (100 g/㎡) optional for interior applications.

Surface treatment: Commonly treated with fingerprint-resistant, anti-fingerprint, or passivation for easy installation and use.

Features of 55% Aluzinc Galvalume Steel Coil:

1. 55% Aluzinc Galvalume Steel Coil offers excellent corrosion resistance.

Aluminum forms a dense alumina protective layer (barrier effect), and zinc provides sacrificial anodic protection (electrochemical protection). The overall corrosion resistance is 2–5 times that of ordinary galvanized steel sheets, and it is guaranteed to be non-perforated for up to 20 years in a pollution-free environment.

2. 55% Aluzinc Galvalume Steel Coil has high heat reflectivity.

The surface reflectivity to solar heat is >75%, twice that of galvanized steel sheet, significantly reducing building energy consumption and meeting EPA Energy Star energy efficiency standards.

3. 55% Aluzinc Galvalume Steel Coil has excellent heat resistance.

It can be used for extended periods at 315℃ without significant oxidation or discoloration, making it suitable for high-temperature environments such as chimneys, ovens, and lampshades.

4. 55% Aluzinc Galvalume Steel Coil is lightweight and economical.

Because the density of aluminum-zinc alloy is lower than that of pure zinc, it covers more than 3% more area than galvanized steel sheet for the same weight and coating thickness, resulting in lower unit costs.

5. 55% Aluzinc Galvalume Steel Coil has good formability and processing performance.

It can be rolled, stamped, and bent without paint peeling or flaking issues (compared to color-coated steel sheets), making it suitable for forming complex components. 6. Environmentally Friendly and Pollution-Free

No volatile organic compounds are emitted, making it recyclable and meeting green building material requirements.

Applications of 55% Aluzinc Galvalume Steel Coil:

1. Construction Industry

Roofs, walls, eaves, partitions, curtain walls, and other building envelopes

Light steel prefabricated housing (S550GD grade can withstand earthquakes of magnitude 8 and typhoons of category 13)

Steel structure factories, greenhouses, warehouses, etc.

2. Home Appliances

Refrigerator, air conditioner, water heater, microwave oven, and other outer casings

Distribution boxes, electrical control cabinets, communication equipment casings

3. Industrial Manufacturing

Automotive parts (such as engine hoods, exhaust systems)

Cooling towers, industrial ventilation equipment, chemical equipment

Containers, railway vehicles, agricultural machinery

4. Other Applications

Metal products, mechanical structural parts, power transmission tower accessories, etc.

Specifications of Galvalume Steel Coil:

Standard and Steel Grade
Standard	Steel Grade	Thickness (mm)	Width (mm)	Spangle	AZ Coating (g/m2)	Coil Weight (mt)	Treatment
JIS G3321:1998	SGLCC SGLCD	0.15-2.0	750-1250	Regular Minimized	30-180	3-20	C,O,CO,U,AFP
EN 10215-1995	DX51D+AZ DX52D+AZ S250GD+AZ S350GD+AZ S550GD+AZ	0.15-2.0	750-1250	Regular Minimized	30-180	3-20	C,O,CO,U,AFP
ASTM A792M-02	CS-B CS-C DS 255 550	0.15-2.0	750-1250	Regular Minimized	30-180	3-20	C,O,CO,U,AFP
AS 1397-2001	G2+AZ G3+AZ G250+AZ G350+AZ G550+AZ	0.15-2.0	750-1250	Regular Minimized	30-180	3-20	C,O,CO,U,AFP

Standards and Classifications

Product name	Galvalume steel coil 55% Al-Zn steel coils
Standard	JIS G3321 / ASTM A792M / EN10215
Grade	SGLCC/SGLCD/SGLC490/SGLC570/ CS TypeA,B,C/DS/255/ DX51D+AZ/DX52D+AZ/S250GD+AZ/S350GD+AZ/S550GD+AZ
Thickness	0.10-4.0 mm
Width	600-1250mm (usual size:914mm,1000mm,1200mm,1219mm,1250mm,1220mm)
Coil ID	508mm, 610mm
Color weight	4-6 tons
Packing	Standard seaworthy export packing: waterproof paper+steel trip packed+wooden case seaworthy package
Delivery	Within 10-15 days
Price	FOB&CNF&CIF price
Payment terms	TT or L/C
Application:	Prengineered steel buildings, industrial and commercial roofing and cladding,agricultural buildings, building accessories, light steel framing, Quonset huts, construction tubular, appliance, and automotive.