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Galvalume Steel Coils: Everything You Should Know

Discover everything you should know about Galvalume steel coils in this comprehensive guide. Explore the composition, properties, and advantages of Galvalume steel coils, including their superior corrosion resistance and durability. Gain insights into the various applications and industries where Galvalume steel coils are used. Understand the factors affecting the price of Galvalume steel coils. Whether you're a contractor, architect, or in the manufacturing industry, this guide will provide you with valuable information to make informed decisions. Expand your knowledge and make the most out of Galvalume steel coils with this comprehensive resource.

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Definition of galvalume steel coil

Galvalume steel coils, also known as Aluzinc steel coils, are a type of coated steel product that combines the corrosion resistance of aluminum with the galvanic protection of zinc. The term “Galvalume” is a registered trademark owned by BIEC International Inc., and it refers specifically to their product.

Galvalume steel is made by coating a steel substrate with a mixture of aluminum, zinc, and silicon. The coating is applied through a continuous hot-dip process, where the steel coil is immersed in a molten bath of the coating material. The coating composition typically consists of approximately 55% aluminum, 43.5% zinc, and 1.5% silicon.

The combination of aluminum and zinc offers excellent corrosion resistance, as both metals have inherent protective properties. The aluminum provides a self-healing mechanism, forming a thin, transparent oxide layer that prevents further corrosion, while the zinc acts as a sacrificial anode, protecting the underlying steel from rust.

Galvalume steel coils are widely used in the construction industry for roofing, cladding, and other applications requiring corrosion-resistant and durable materials. They offer a longer lifespan compared to traditional galvanized steel and are known for their superior resistance to atmospheric corrosion, heat, and sunlight exposure.

Prepainted Galvalume steel coil: properties and applications

Prepainted Galvalume steel coils are Galvalume steel coils that have been further processed with a pre-applied paint coating. The Galvalume steel substrate provides excellent corrosion resistance, while the pre-painted coating enhances the aesthetic appeal and adds additional protection.

The prepainting process involves applying a layer of paint to the Galvalume steel coils through a continuous coil coating line. The coils are first cleaned and treated to ensure proper adhesion of the paint. Then, a primer is applied to enhance adhesion and provide a smooth base for the topcoat. Finally, a topcoat of paint is applied, which can be in a wide range of colors and finishes.

Prepainted Galvalume steel coils offer several advantages. They combine the corrosion resistance and durability of Galvalume steel with the versatility and aesthetics of the pre-painted finish. The pre-applied paint provides an additional layer of protection against environmental elements, such as UV radiation and moisture, while also allowing for customization in terms of color and design.

These coated steel coils are widely used in various applications, including roofing, wall cladding, garage doors, appliances, and other architectural and industrial applications. They offer a durable, attractive, and low-maintenance solution for projects that require both corrosion resistance and aesthetic appeal.

Prepainted Galvalume steel coils vs. prime prepainted Galvalume steel coils

Prepainted Galvalume Steel Coils

Prepainted Galvalume steel coils refer to Galvalume steel coils that have been pre-coated with a paint system. These coils come in various colors and finishes, offering versatility and customization options for different applications. Prepainted Galvalume steel coils provide aesthetic enhancement and additional protection against environmental elements such as UV radiation and moisture. These coils are widely used in applications where both functionality and visual appeal are important.

Prime Prepainted Galvalume Steel Coils

Prime prepainted Galvalume steel coils are a subset of prepainted Galvalume steel coils that meet higher quality standards. The term “prime” signifies that these coils are of superior quality, free from defects or imperfections, and adhere to strict industry standards. Prime prepainted Galvalume steel coils undergo stringent quality control measures during the manufacturing process to ensure consistent and reliable performance. These coils are sought after in applications where a high level of durability, corrosion resistance, and visual aesthetics is required.

In summary, while both prepainted Galvalume steel coils and prime prepainted Galvalume steel coils are coated with a paint system, the term “prime” distinguishes the latter as a higher quality subset that meets strict quality standards. Prime prepainted Galvalume steel coils are known for their superior performance, durability, and aesthetic appeal.

What is the meaning of HS code galvalume steel coils?

The HS code for Galvalume steel coils refers to the Harmonized System code, which is an internationally recognized system for classifying and categorizing traded products. HS codes are used to standardize and facilitate international trade by assigning a unique code to each product.

In the case of Galvalume steel coils, the HS code is a numerical code that specifically identifies this particular type of product for import and export purposes. The code is used by customs authorities and other trade entities to classify and track the movement of Galvalume steel coils across borders. It helps in determining import duties, taxes, and customs procedures applicable to these products.

HS codes are organized into different sections, with each section representing a specific category of products. The code HS Galvalume steel coils falls under the broader category of iron and steel products. The specific code may vary depending on the country, as different countries may have their national variations of the HS code system.

By using the code HS Galvalume steel coils, importers, exporters, and customs authorities can accurately identify and classify these products, ensuring compliance with trade regulations and facilitating smooth international trade transactions.

Specific rules and restrictions govern the import and export of Galvalume steel coils

Some specific regulations and standards may apply to the import/export of Galvalume steel coils. These regulations and standards can vary depending on the country or region involved. Here are some examples of international standards and regulations related to Galvalume steel coils:

International Organization for Standardization (ISO): ISO has standards related to steel and steel products, including those used for Galvalume coatings. For example, ISO 9364:2017 specifies the requirements for continuously hot-dip coated steel sheets and strips containing aluminum and zinc.

American Society for Testing and Materials (ASTM): ASTM has several standards related to Galvalume steel, such as ASTM A792/A792M, which covers the requirements for steel sheet, 55% aluminum-zinc alloy-coated by the hot-dip process.

European Committee for Standardization (CEN): CEN has standards for coated steels, including Galvalume coatings. For instance, EN 10346:2015 specifies requirements for continuously hot-dip coated steel flat products for cold forming.

National Standards: Many countries have their national standards for Galvalume steel coils. For instance, in the United States, the American Iron and Steel Institute (AISI) provides guidelines and standards for Galvalume steel, such as AISI Specification G550.

In addition to standards, import/export regulations, customs requirements, and trade policies also apply. These can include documentation requirements, customs duties, tariffs, and compliance with specific import/export regulations of the respective countries involved. It is crucial to consult with customs authorities, trade organizations, or legal experts in specific countries to ensure compliance with the applicable regulations and standards when importing or exporting Galvalume steel coils.

Factors influencing the price of Galvalume steel coil

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The price of Galvalume steel coils can be influenced by several factors. Here are some important aspects that can influence pricing:

Raw Material Costs: The cost of the raw materials used to produce Galvalume steel coils, such as steel, aluminum, zinc, and silicon, can have a significant impact on the overall price. Fluctuations in the prices of these raw materials, influenced by factors like supply and demand dynamics, global market conditions, and trade policies, can impact the cost of Galvalume steel coils.

Production and Manufacturing Costs: The production and manufacturing costs involved in producing Galvalume steel coils, including labor costs, energy costs, equipment maintenance, and operational expenses, can contribute to the final price. Factors such as wage rates, energy prices, and production efficiency can influence these costs.

Market Demand and Supply: The demand for Galvalume steel coils in the market can affect the price. Scarcity may cause prices to rise if demand exceeds supply. Conversely, if the supply surpasses the demand, prices may decrease due to increased competition.

Currency Exchange Rates: Exchange rate fluctuations can impact the price of Galvalume steel coils, especially in international trade. If the currency in which Galvalume steel coils are traded weakens against the currency of the buyer, it can lead to higher prices for the buyer.

Market Competition: The level of competition among suppliers and manufacturers of Galvalume steel coils can influence the pricing. When there is intense competition, suppliers may adjust their prices to attract customers or gain a competitive advantage.

Quality and Specifications: The quality, specifications, and additional features of Galvalume steel coils can affect the price. Higher-quality coatings, customized specifications, or additional performance characteristics may command a higher price compared to standard offerings.

Trade Policies and Tariffs: Trade policies, import/export regulations, and tariffs imposed by governments can impact the price of Galvalume steel coils. Tariffs and duties levied on imported Galvalume steel coils can increase their price in certain markets.

Conclusion

In conclusion, this comprehensive guide has provided vital insights into Galvalume steel coils, providing you with critical information about their composition, features, and benefits. You've learned about Galvalume steel coils' exceptional corrosion resistance and durability, which makes them a dependable choice for a variety of applications and industries. Understanding the elements influencing the price of Galvalume steel coils allows you to make informed selections that are tailored to your requirements. Whether you work in construction, manufacturing, or another industry, the knowledge offered here will help you maximize the benefits of Galvalume steel coils. With this expertise, you can include Galvalume steel coils into your projects with confidence, assuring long-lasting and high-performance results.

What Is Galvalume® Steel and How Is it Used in Metal ...

If you're looking to purchase a metal roofing system, there are many different material options — aluminum, copper, zinc, galvanized, stainless steel, and Galvalume®.

The most widely used metal in architectural metal roofing is Galvalume, a steel-based product that can be used for nearly every building application.

How much do you know about Galvalume? Do you know the critical advantages and disadvantages of this metal roofing material?

Our primary product offerings at Sheffield Metals are painted and bare Galvalume coils and sheets used in the architecturally-driven metal roof and wall industry. We know how important it is for you to be an educated buyer, so let's dive into the specific details of this material and why it may or may not be a good choice for your project.

Ahead in this article, we cover:

• What is Galvalume?
• Uses for Galvalume
• Advantages of Galvalume
• Disadvantages of Galvalume

What Is Galvalume®?

Bethlehem Steel introduced the Galvalume coating to the construction industry in the early 1970s. Before Galvalume came into existence, most metal roofing was galvanized steel. However, because of the superior durability and corrosion resistance of Galvalume, 90+ percent of the metal roofing industry transitioned from galvanized substrates to a Galvalume substrate in the mid to late 1990s.

Galvalume combines three of the most high-performing and important metals used in roofing today — steel, aluminum, and zinc. Manufacturers begin with a cold-rolled carbon steel base sheet that is continuously hot-dipped with aluminum and zinc alloys (AZ) until it reaches a coating of 55% aluminum, 43.4% zinc, and 1.6% silicone.

This process allows for one material to have some of the best characteristics of each metal, which is why it's become one of the most popular metals used in metal roofing.

Galvalume may also be referred to by its coating weights, AZ-50 and AZ-55. Here's a quick breakdown of what these two terms mean:

• AZ-50 = 0.50 ounces per square foot of the aluminum-zinc alloy coating applied to both sides of the substrate.
  • AZ-50 is the typical coating weight for painted sheet and coil products.

• AZ-55 = 0.55 ounces per square foot of the aluminum-zinc alloy coating applied to both sides of the substrate.
  • AZ-55 is the typical coating weight for bare or unpainted (often called acrylic-coated Galvalume or Galvalume Plus) sheet and coil products.
  • Acrylic-coated Galvalume has a slightly heavier coating weight and includes a light acrylic coating that protects the Galvalume coating in the manufacturing process. This acrylic coating will wear off over time with exposure. Though not painted, these products still need to be handled with care, or you risk scuffing or perforating the coating.

Uses for Galvalume® Metal Roofs & Walls

Overall, Galvalume is suitable as a roof, wall, trim, accent, and more in most building applications in some of the most extreme environments, including non-coastal hurricane zones, locations with high rain or snowfall, high-temperature regions, and more.

Some common uses for Galvalume include:

• Commercial buildings – Hospitals, schools, stores, government buildings, and more
• Residential projects – Single-family, multi-family, condominiums, and more
• Architectural structures – Commercial, governmental, residential, and more
• Structural or industrial applications – Warehouses, factories, and more
• Agricultural – Non-animal confinement spaces, barns, storage, and more

However, there are some situations where Galvalume is not recommended for use. In most of these situations, the primary concern is that the aluminum-zinc coating will prematurely break down and cause the system to fail quicker than if it were not in that location.

Here are a couple of circumstances where Galvalume should not be used:

• Animal enclosures or buildings – Galvalume is not suitable for use on buildings where animals are housed or held. Manure from the animals breaks down into ammonia gas over time and then reacts with the Galvalume coating. This process breaks down the Galvalume coating and leads to degradation of the metal. However, Galvalume is sometimes used on modern chicken houses built with a vapor barrier between the chicken area and the roof for appropriate ventilation. It's best to check with the manufacturer before putting Galvalume on an animal confinement building, as it's often dependent on the specific design and use.

• Coastal environments – The coating of Galvalume will not stand up to the conditions associated with a coastal environment, including properties up against breaking surfs, large bays, marshes, and other coastlines. Specifically, large amounts of salt will degrade the Galvalume coating and lead to premature damage to the roof or wall. It's recommended that properties within a certain distance of a coast use an engineered aluminum roof system, as aluminum resists corrosion and rusting from saltwater for much longer.

If your project is in one of these environments or you're unsure if your location is corrosive to Galvalume, it's best to check with the manufacturer to see what they recommend.

Advantages & Benefits of Galvalume® Metal Roofing

Warrantied Product

One of the number one selling points of Galvalume is the 25.5-year warranty on the substrate, which is sometimes referred to as a perforation warranty. Galvalume systems also often come with paint warranties that further protect your investment and provide peace of mind that the roof or wall system will last. (Note: Substrate or paint warranties are NOT available for Galvalume products within 1,500 feet of a coast.)

Plus, commercial property owners can buy a weathertight warranty for their Galvalume roofing structure, which ensures the roof was installed correctly and adheres to strict installation details.

Corrosion Resistance & Self-Healing Properties

Galvalume's chemical formula was specifically designed to combine the toughness, strength, and self-healing properties