Aluminized Steel

Corrosion and Heat Resistance

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Aluminized steel combines the strength and versatility of carbon steel with a protective aluminum-based coating that helps resist corrosion and perform in demanding environments.

Premium Steel Sales stocks ready-to-ship aluminized steel in coil and sheet with custom processing options available. Our flexible sourcing approach gives manufacturers, fabricators, and OEMs access to aluminized steel that aligns with both performance requirements and budget goals.

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What Is Aluminized Steel?

Aluminized steel is carbon steel that has been hot-dip coated with a protective aluminum-based coating. Depending on the grade, the coating may consist of an aluminum-silicon alloy or pure aluminum. This process creates a strong metallurgical bond between the steel substrate and the coating, combining the strength and durability of carbon steel with enhanced corrosion resistance and heat resistance.

Why Choose Aluminized Steel?

High-Temperature Resistance

The aluminum content in the coating of aluminized steel ensures that the steel substrate remains intact and well protected even in high-heat environments above 900°F.

Corrosion Resistance

The aluminum-silicon coating protects the underlying steel from corrosion and oxidation, helping reduce material breakdown in demanding environments.

Long Service Life

The combination of high heat resistance and corrosion protection ensures an extended lifespan of fabrications that are produced from aluminized steel operating in demanding environments.

Stacked aluminized steel sheets showing different coating types

Coating Types

Aluminized steel comes in two coating types:

Type 1
Features an aluminum-silicon coating (typically 5% to 11% silicon) that provides excellent heat and corrosion resistance, making it ideal for elevated-temperature applications.

Type 2
Features a pure aluminum coating designed for environments where corrosion resistance is the primary concern.

While Type 1 aluminized steel is the most common and quite readily available on the market in many coating weights, Type 2 aluminized steel is less commonly produced and is typically much more difficult to obtain.

Aluminized steel coil being processed on a slitting line

Availability and Processing Options

Aluminized steel is available in master coils across a wide range of thicknesses and coating weights. It can be cut into sheets to your desired lengths, or it can be slit into custom width coils, including very narrow widths.

High-quality custom processing is available as well, including fine blanking and coil spinning for inspection purposes or to break for maximum weight or coil diameter limitations.

Aluminized steel appliance components on a production line

Aluminized Steel in Action

The unique characteristics of aluminized steel make it ideal for a range of industries and common end products, such as:

  • Household appliances
  • Lighting fixtures
  • Automobile components
  • Construction
  • Residential
  • Commercial HVAC systems
  • Agricultural machinery exhaust systems

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The Premium Steel Sales Advantage

Sourcing flat rolled carbon steel is about more than finding available inventory. Premium Steel Sales draws on more than 30 years of industry experience and a nationwide network of mills, suppliers, and processors to provide material options that align with your application, timeline, and budget.

Cost Efficiency

Reduce material costs by tapping into our large in-stock inventory, vast market knowledge, and steel-buying experience.

Shorter Lead Times

Achieve shorter lead times by sourcing from available inventory instead of relying on mill production schedules.

Innovative Sourcing

Choose from a wide range of material options that go beyond standard inventory and specifications to fit your application.

Frequently Asked Questions About Aluminized Carbon Steel

  • What is aluminized steel used for?

    Aluminized steel is commonly used in applications that require both heat and corrosion resistance. Typical uses include exhaust systems, heating equipment, industrial ovens, furnaces, heat shields, and other products exposed to elevated temperatures.

  • What are the advantages of aluminized steel?

    Aluminized steel combines the strength and durability of carbon steel with the corrosion and heat resistance provided by its aluminum-based coating.

  • What is the difference between Type 1 and Type 2 aluminized steel?

    Type 1 aluminized steel features an aluminum-silicon coating that provides excellent heat and corrosion resistance, making it suitable for elevated-temperature applications. Type 2 aluminized steel features a pure aluminum coating and is typically selected for environments where corrosion resistance is the primary concern.

  • How heat resistant is aluminized steel?

    Type 1 aluminized steel is designed to withstand extremely high temperatures and is commonly used in applications operating in environments up to approximately 900°F. Actual performance depends on specific operating conditions and application requirements.

  • Is aluminized steel corrosion resistant?

    Yes. The aluminum coating forms a protective oxide layer that helps shield the underlying steel substrate from corrosion, making aluminized steel more corrosion resistant than bare carbon steel.

  • Can I only purchase aluminized steel in coil form?

    No. Premium Steel Sales supplies aluminized steel in master coil and can either level it out to flat sheets (in standard or custom lengths) or slit it to specific widths (even very narrow widths). Premium Steel Sales also has the capability to spin master coils for material inspection or, if necessary, to break for maximum weight and size limitations.

  • Can Premium Steel Sales help determine the right aluminized steel for my application?

    Yes. Our team works with manufacturers, fabricators, and procurement teams to identify the right aluminized steel products for their application requirements, operating conditions, processing needs, and budget goals.

Request an Aluminized Steel Quote

Premium Steel Sales supplies ready-to-ship aluminized steel for applications requiring heat resistance, corrosion protection, and long service life. Get started by requesting a quote.






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