If you work in construction or any other industrial business, you need materials that can handle tough environments without raising maintenance costs. That’s where galvalume AZ150 comes in! It’s known for its amazing corrosion resistance, durability, and cost-effectiveness.
Increasingly, businesses are investing in this material, and the overall market size is projected to reach USD 13.7 billion by 2031. If you want to know more about galvalume AZ150, its composition, and applications, keep reading!
Composition of Galvalume AZ150
Galvalume AZ150 is a type of steel coated with an aluminum-zinc-silicon alloy. The ‘150’ in its name indicates a coating weight of 150 grams per square meter, making it ideal for applications such as roofing and industrial construction. Here’s an overview of the actual composition of the AZ150:
Elements | Percentage |
Zinc | 55% |
Aluminum | 43.4% |
Silicon | 1.6% |
AZ50 / AZ70 / AZ150: Comparison
Now that you are aware of the core concept and composition of AZ150, let’s compare it to other types like galvalume AZ50 and AZ70:
AZ50
The AZ50 differs from the AZ150 in its aluminum zinc coating weight, which is approximately 0.50 ounces per square foot. Since the coating is relatively thin, it’s best suited for environments with low corrosion exposure and temporary construction projects.
AZ70
On the other hand, the AZ70 has a thicker coating compared to AZ50, but it’s less than that of AZ150. This material has 70 grams of aluminum-zinc coating per square meter and is commonly found in roofing, as well as in home appliances that aren’t used in harsh environments.
When we look at the cost, AZ150 is slightly expensive compared to AZ50 and AZ70 due to its extraordinary durability and high coating weight.
How is Galvalume AZ150 Made?
The manufacturing process of galvalume is quite straightforward, involving material selection, cleaning, and further processing. Let’s discuss it in detail:
- A coil of cold-rolled steel is cleaned and then welded to make a long, continuous strip.
- The steel is then sent through a coating line where it’s immersed in a bath of molten alloy containing a precise quantity of aluminum, zinc, and silicon.
- It’s then pulled from the bath at a very high speed, around 600 feet per minute, and then cooled. The coating thickness is controlled by carefully adjusting the strip’s speed and the temperature of the molten alloy bath.
- The finished galvalume AZ150 is then stored for protection or sent to further processing lines.
Corrosion Test Standards
To make sure your AZ150 meets the highest quality standards, you should run essential tests and follow all quality assurance practices. Here are the two standards that are quite important in this regard:
ASTM A792
ASTM A792 is the standard specification for steel sheet that’s coated with a 55% aluminum-zinc alloy using the hot dip process. The key requirements for this standard include:
- Steel Base: Specifies the type of steel that’s used as the base material for the galvalume coating.
- Alloy Composition: Outlines the exact composition of the 55% aluminum-zinc alloy.
- Weight of Coating: Tells the minimum coating weight per unit area.
- Mechanical Properties: Sets the minimum requirements for tensile strength, yield strength, and elongation.
- Formability: Mentions the ability of the steel to be formed without cracking or splitting.
JIS G3321
In addition to ASTM, the Japanese Industrial Standard specifies requirements for hot-dip galvalume steel coils and sheets. It outlines the material and coating requirements and essentials like:
- Mechanical Properties: Minimum requirements for mechanical properties like yield strength, tensile strength, and elongation.
- Manufacturing: Specifies manufacturing processes, including strain, aging, painting, and oiling.
- Finishes: Outlines standard finishes, including “Normal Spangle” and “Skin Pass.”
- Quality Control: Requirements for the manufacturer’s heat analysis and the customer’s product analysis to ensure compliance with relevant standards.
Benefits of Galvalume AZ150
The benefits of AZ150 include incredible corrosion resistance, cost-effectiveness, durability, and aesthetic appeal. Let’s discuss these in detail:
Corrosion Resistance
Well, it’s normal for all types of steel to experience some level of rust or corrosion. However, what makes AZ150 stand out is its amazing corrosion-resistant formulation. It features the self-healing properties of zinc and aluminum, offering superior protection against damage in harsh conditions.
Durability
Galvalume AZ150 is highly durable, with a lifespan exceeding 50 years. When you use it for roofing applications, you can be assured that it will last for a long time without losing its structural integrity. There’s no need to replace it every 10 to 15 years like asphalt shingles, making it a perfect choice for homeowners and businesses alike.
Energy Efficiency
Electricity prices are skyrocketing all around the globe. Another benefit of AZ150 is its high energy efficiency. It has high solar reflectivity and superior thermal performance. This means that during scorching heat, having it in the building structure will reduce the energy needed to cool a space, significantly reducing electricity bills.
Low Maintenance
What truly sets AZ150 apart is its low-maintenance nature. Once installed, it simply requires periodic cleaning to maintain its pristine condition. Here are some tips that one can follow for its upkeep:
- Wash the galvalume surface annually or biannually with a mild detergent plus water solution using a soft brush. Make sure you don’t invest in harsh chemicals or abrasives, as they can significantly damage the protective coating.
- Carry out regular material checks to pinpoint scratches, lines, or signs of corrosion. In case of minor scratches, you should clean the area thoroughly and then apply a rust-inhibiting primer compatible with galvalume and touch up with a sealant or paint to prevent corrosion attacks.
- Avoid contact with highly acidic and alkaline materials, including damp wood, cement, wet concrete, and bitumen.
- If you’ve installed unpainted galvalume panels in a recent project, limit heavy foot traffic and avoid pressing boots too hard on their surface.
Aesthetic Appeal
Galvalume AZ150 is aesthetically pleasing due to its modern, shiny, sleek, and silver white appearance. It can easily complement most architectural styles and also holds the paint for a longer time, avoiding peeling or fading.
Despite these massive advantages, AZ150 also has several disadvantages. For instance, the material may experience oil canning, characterized by waviness or distortion in the flat surfaces of metal panels. This severely compromises the overall aesthetic appearance. However, other than that, galvalume also performs poorly in alkaline conditions, leading to accelerated corrosion of the aluminum component.
Applications of Galvalume AZ150
The applications of galvalume AZ150 are pretty diverse, including the construction and automotive industries. Here’s an overview of some:
- Construction: In the construction industry, AZ150 is used for building roofs and wall panels. Moreover, it’s also used in drainage systems, chimney stacks, and various pipes.
- Automotive: For the automotive industry, AZ160 is used in car exhaust pipes and mufflers due to its high-temperature resistance. Fuel tanks, guards, and wiper accessories also use this material.
- Agricultural Equipment: AZ150 is used for making structural elements of piggeries and barns. On top of this, it’s part of gutters, downspouts, and irrigation systems.
Conclusion
The galvalume AZ150 is a must-have if your projects or applications are present in harsh or highly acidic and alkaline environments. Wondering where to find top-notch steel products for your needs?
Zhaojian Steel is the ultimate one-stop shop. Get in touch with us today to explore our massive range of products and choose the one that best suits your budget.
