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Are Aluminum Window Frames Better Than Steel Ones?

Written on March 17, 2025
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Key Takeaways

  • Aluminum windows are more cost-effective than steel ones.
  • Steel windows provide superior strength and durability, making them suitable for larger window designs and harsher environments.
  • Maintenance for aluminum frames is minimal compared to steel, which may require regular rust prevention treatments.
  • Panda Windows & Doors provides custom windows in various materials, including aluminum and steel.

Comparing Aluminum Window Frames With Steel Ones

When choosing between aluminum and steel window frames, it’s important to consider factors such as strength, durability, maintenance, cost, energy efficiency, and design flexibility. Each material has its own advantages and drawbacks and is suitable for different applications.

Steel windows are known for their superior strength and slim profiles, and they are a popular choice for large commercial buildings and high-end architectural designs. However, they require more maintenance due to their susceptibility to rust.

On the other hand, aluminum windows offer excellent corrosion resistance, cost-effectiveness, and design versatility, making them a practical choice for both residential and commercial use.

Strength and Durability

  • Steel Windows: Steel is significantly stronger than aluminum, which makes it especially suitable for applications where high structural integrity is required, such as in large commercial buildings or where slim profiles are desired.
  • Aluminum Windows: While aluminum is weaker than steel, aluminum alloys can achieve a tensile strength of up to 690 MPa, which is sufficient for most residential and commercial window applications.

Maintenance and Corrosion Resistance

  • Steel Windows: Steel is prone to rust, which can compromise its integrity. Regular maintenance is necessary to prevent corrosion, especially in humid or coastal environments.
  • Aluminum Windows: Aluminum is highly resistant to corrosion and requires minimal maintenance.

Cost and Manufacturing

  • Steel Windows: Steel windows are more expensive due to higher material costs and a more labor-intensive manufacturing process.
  • Aluminum Windows: Aluminum is cheaper and easier to manufacture. Plus, its malleability allows for quicker production and installation.

Energy Efficiency and Thermal Performance

  • Both Materials: Both conduct heat, but their energy efficiency can be improved with thermal breaks and dual or triple-glazed glass.

Aesthetic and Design Flexibility

  • Steel Windows: Steel provides slim profiles and narrow sightlines, which makes it ideal for minimalist designs. However, it is less flexible in terms of custom shapes compared to aluminum.
  • Aluminum Windows: Aluminum provides extensive color options and can be molded into complex designs.

Environmental Impact

  • Both Materials: Both aluminum and steel are highly recyclable.

Since our founding in 1991, Panda Windows & Doors has specialized in state-of-the-art custom glass wall systems for both residential and commercial spaces. Operating from our manufacturing facility in Las Vegas, Nevada, we have been at the forefront of innovation for over 30 years. Our product offerings, which include over 80 high-end options, such as pivot doors, French doors, folding doors, lift & slides, multi-slides, horizontal sliding walls, and operable windows, are available in a range of materials, including aluminum, steel, stainless steel, bronze, solid wood, and aluminum-wood clad.
Our company is widely recognized for its award-winning designs, engineering solutions, and rapid delivery times. We ensure that our customers throughout the U.S. and Caribbean receive their products within 6-10 weeks. Our company is trusted by leading architectural firms and glaziers nationwide, and we stand as the premier manufacturer of custom luxury windows and doors in the United States.
Learn About Custom Solutions from Panda Windows & Doors Today

When To Choose Aluminum Window Frames

living room

Choose aluminum window frames for a balance of durability and cost-effectiveness.

1. Modern Architectural Designs: Aluminum frames are ideal for contemporary homes due to their sleek, modern aesthetic and versatility in design.

2. Corrosion-Resistant Requirements: Aluminum is highly resistant to corrosion. Thus, it’s suitable for coastal or high-humidity environments.

3. Cost-Effective Options: Aluminum windows are generally cheaper than steel, both in terms of material and manufacturing costs. This makes them a cost-effective choice if you are on a tight budget.

4. Lightweight and Easy Installation: Aluminum is lightweight, which simplifies the installation process and reduces labor costs.

Read More: Is Aluminium a Better Material for Windows, or Is It the Other Way Around?

When To Choose Steel Window Frames

1. High-Strength Requirements: Steel is three times stronger than aluminum, thus, it’s more suitable for applications where high structural integrity is important, such as large commercial buildings or historical renovations.

2. Slim Profiles and Aesthetic Appeal: Steel windows provide slim profiles and narrow sightlines to maximize glass area and natural light intake. This is perfect for designs that prioritize minimalism and panoramic views.

3. Long-Term Durability: Steel windows can last over 50 years with proper maintenance.

4. High-Security Needs: Steel's strength provides enhanced security against intrusions required for luxury homes.

Choose Panda Windows & Doors For Custom Windows

living room

Panda is a trusted custom window manufacturing company in the US.

Panda Windows & Doors provides a wide range of customizable window options—so you can be sure you’ll find the perfect style to complement your home’s aesthetic.

Whether you're leaning toward aluminum for its affordability and modern appeal or steel for its strength and classic style, we can deliver.

Why Choose Us

1. Beauty and Strength: Our products are built for strength but designed with beauty in mind.

2. Engineering Expertise: We excel at providing engineering solutions for complex projects. So, if you have a challenging design, we're equipped to handle it.

3. Energy Efficiency: Our products are designed to support LEED® and Title 24 compliance, helping you save money and reduce your environmental impact.

4. In-House Quality Control: Our on-site test wall is an example of our devotion to the highest quality control.

Reach out to us to learn more about our products and get a free quote.

Frequently Asked Questions (FAQs)

What is the lifespan of aluminum windows compared to steel?

Aluminum windows last around 20-30 years, while the lifespan of steel windows can exceed 50 years with proper care.

How do maintenance requirements differ between aluminum and steel windows?

Aluminum windows require minimal maintenance, needing only occasional cleaning to keep them looking their best. In contrast, steel windows may require regular rust prevention treatments, especially in humid or coastal environments.

Can steel windows be installed in historical buildings?

Yes, steel windows are often used in historical buildings because they can replicate traditional designs while providing modern security and energy efficiency benefits.

Can aluminum windows corrode?

While aluminum itself is resistant to corrosion, it can corrode if the protective coating is damaged. Anodizing or powder coating helps prevent this.

What makes Panda Windows & Doors different from other companies?

We focus on high-end, luxury custom solutions. Our products are designed to be focal points that make spaces more elegant and functional.

Click here to learn more about what sets us apart.