S280GD AZ100 150 180 200 Galvanized Steel Coil

 

S280GD+AZ galvanized steel coil is a high-performance structural steel product independently supplied by GNEE STEEL, fully compliant with the EN 10346:2015 international standard. As a premium hot-dip galvanized (galvalume) steel coil, it features a 55% Al-43.4% Zn-1.6% Si alloy coating and a minimum yield strength of 280 MPa, integrating exceptional corrosion resistance, high structural strength, and excellent formability. Unlike ordinary galvanized steel, S280GD+AZ galvanized steel coil offers 3–6 times longer service life, making it a cost-effective and reliable solution for medium to high-load structural applications. 

 

All parameters of S280GD+AZ galvanized steel coil strictly comply with EN 10346:2015, ensuring data accuracy and professional reliability. Customization is available according to customer project requirements.

Parameter	Specification	Standard	Remarks
Steel Grade	S280GD+AZ (1.0243)	EN 10346:2015	Structural grade
Substrate	Low-carbon structural steel	EN 10346	High purity, low impurity content
Coating Composition	55% Al, 43.4% Zn, 1.6% Si	Hot-dip process	Standard galvalume coating
Coating Mass	AZ30–AZ275 g/m²	EN 10346	Customizable per request
Thickness Range	0.50–3.50 mm (tolerance: ±0.02 mm)	EN 10346	Suitable for various structural needs
Width Range	600–1520 mm (tolerance: ±0.06 mm)	EN 10346	Custom width available
Yield Strength (Rp0.2)	≥280 MPa	EN 10346	Guaranteed structural stability
Tensile Strength (Rm)	370–510 MPa	EN 10346	High load-bearing capacity
Elongation (A80)	≥18%	EN 10346	Good formability
Surface Finish	Passivated, chromated, oiled, dry	GNEE STEEL Standard	Customizable
Coil Weight	2–8 tons	GNEE STEEL Standard	Adjustable based on order

 

Chemical Composition (Ladle Analysis, Max %)	C	Si	Mn	P	S
Content	0.25	0.50	1.40	0.12	0.045

*Compliant with EN 10346:2015 and GB/T 222 standards, ensuring product stability and reliability.*

 

Coating Code	Total Coating Weight	Total Coating Thickness	Approx. Single Side Thickness(μm)	Applicable Standards
	(g/m², both sides)	(μm, theoretical)
AZ50	50	13.16	6.58	GB/T 14978, EN 10346, ASTM A792
AZ70	70	18.42	9.21	GB/T 14978, EN 10346, ASTM A792
AZ100	100	26.32	13.16	GB/T 14978, EN 10346, ASTM A792
AZ150	150	39.47	19.74	GB/T 14978, EN 10346, ASTM A792
AZ180	180	47.37	23.68	GB/T 14978, EN 10346, ASTM A792
AZ200	200	52.63	26.32	GB/T 14978, EN 10346, ASTM

 

Benefiting from its high strength, corrosion resistance, and formability, S280GD+AZ galvanized steel coil is widely used in various industries, becoming the preferred material for structural and functional components:

 

Construction Industry: Roofing, wall cladding, purlins, structural framing, steel beams, gutters, downspouts, and prefabricated buildings. It is especially suitable for large-span buildings, industrial workshops, and coastal buildings.

Manufacturing Industry: HVAC components, ventilation ducts, electrical enclosures, storage racks, and light industrial equipment parts. Its excellent formability reduces processing costs for manufacturers.

Infrastructure: Highway guardrails, noise barriers, bridge auxiliary structures, and municipal facilities. Its corrosion resistance ensures long-term service in outdoor environments.

Agricultural Field: Farm buildings, silos, greenhouses, and agricultural machinery parts. It can withstand harsh agricultural environments such as humidity and pesticides.

Automotive Industry: Lightweight structural parts, automotive frames, and auxiliary components, leveraging its high strength and lightweight characteristics to improve vehicle performance.

 

 

As a professional steel supplier, GNEE STEEL is committed to providing high-quality S280GD+AZ galvanized steel coil and one-stop service for global customers, with irreplaceable advantages:

What does S280GD+AZ stand for?

S280GD refers to structural steel with a minimum yield strength of 280 MPa; +AZ indicates a hot-dip aluminum-zinc (galvalume) coating, which is composed of 55% aluminum, 43.4% zinc, and 1.6% silicon.

 

What is the difference between S280GD+AZ and S220GD+AZ?

The core difference is the yield strength: S280GD+AZ has a minimum yield strength of 280 MPa, suitable for medium-load structural applications; S220GD+AZ has a minimum yield strength of 220 MPa, suitable for light-load applications. Both have the same aluminum-zinc coating and corrosion resistance.

 

What is the service life of S280GD+AZ galvanized steel coil?

In normal atmospheric environments, the service life is 20–30 years; in coastal or industrial areas with harsh corrosion, the service life is 15–25 years, which is 3–6 times longer than ordinary galvanized steel.

 

Can S280GD+AZ galvanized steel coil be painted?

Yes, it has excellent paint adhesion. It can be directly painted without pre-treatment or weathering, which can further improve its corrosion resistance and aesthetic effect.

 

What is the maximum temperature that S280GD+AZ can withstand?

It can withstand continuous temperatures up to 315°C without coating peeling, discoloration, or performance degradation, making it suitable for high-temperature working environments.

 

Is S280GD+AZ suitable for coastal areas with high salt spray?

Yes, the high aluminum content in the coating forms a dense oxide film, which has strong resistance to salt spray and marine corrosion, making it an ideal material for coastal buildings and facilities.

 

What coating masses are available for S280GD+AZ?

The standard coating masses are AZ30, AZ50, AZ70, AZ100, AZ150, AZ200, and AZ275 g/m². We can also provide customized coating masses according to customer requirements.

 

How to get a sample of S280GD+AZ galvanized steel coil from GNEE STEEL?

You only need to send us an inquiry, and we will provide free samples (with a small shipping fee) for your test. At the same time, we will provide a detailed technical datasheet to help you understand the product better.

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