Aluminized Steel: Combining the Power of Aluminum and Steel for a Better Material

Both aluminum and steel are ideal manufacturing materials; aluminum boasts extreme resistance to corrosion, while steel is notable for its superior strength. They both have weaknesses, however. For instance, carbon steel does not have enough chromium to create an oxide layer that would protect it from rust. Meanwhile, pure aluminum is much weaker than steel.

Metallurgists combined the two to produce a better compound material — aluminized steel. If you want the complete list of aluminized steel’s physical and chemical properties, Hascall Steel Co. will be happy to share it with you. For now, let’s explore the main characteristics of this material.

Aluminized Steel’s Properties

Aluminized steel is carbon steel that has been coated with an aluminum-silicon alloy through a process called hot-dipping. The technique creates a tight metallurgical bond between the base metal (the carbon steel) and its alloy coating to give the new material a combination of steel and aluminum’s best characteristics.

Aluminized steel has steel’s strength while also maintaining aluminum’s advantageous surface qualities. It also has good formability, too, so metallurgists can bend, fold, corrugate, and roll it without breaking.

Here are some of the compound’s other advantageous properties:

  • High Temperature Resistance – the aluminum-silicon coating of aluminized steel makes the material resistant to high temperatures. In fact, it can withstand up to 900° F, much higher than galvanized steel’s limit of 392° F.
  • Low Thermal Expansion Coefficient – Aluminized steel has a relatively lower thermal expansion coefficient, which means it’s less likely to deform under heat stress. This is its advantage over stainless steel.
  • Corrosion Resistance – Aluminized steel is more corrosion-resistant than both carbon steel and aluminum because the aluminum oxide that forms during hot-dipping protects the base metal.

Aluminized steel is relatively new in the industry, but it has already become a material of choice for its unique set of properties. Additionally, it’s more economical than common materials like stainless steel.

Types of Aluminized Steel

There are two types of aluminized steel depending on the purity of its coating.

Type 1 aluminized steel has a coating that’s around 5-11% silicon. Metallurgists usually use this in equipment that requires extreme heat resistance, like cooking and heating.

Meanwhile, type 2 aluminized steel has a pure aluminum coating, which is often thicker than type 1’s coating. Manufacturers usually use this in cladding and jacketing over insulation.

Common Applications

Aluminized steel is commonly used in applications involving high temperatures and corrosion resistance.

Its resistance to high temperatures makes it ideal for incinerators, ovens, heaters, kitchen ranges, and barbeque burners. Additionally, the aluminum-silicon coating doesn’t rust or affect the flavor of food, making it sanitary for cooking ware like baking pans and pots.

Its resistance to corrosion, meanwhile, makes it great for HVAC components and pipes in industrial facilities that carry corrosive liquids.

Quality Aluminized Steel

Aluminized steel is ideal for various applications. Your facility, however, should source your aluminized steels from a trusted steel service company like Hascall Steel Co.

We take great care to select and process our products to your exact specifications. We can offer aluminized steel tailored to certain physical and chemical properties like tensile strength, yield and elongation, and Rockwell hardness.

Whether you want steel that is slit, sheared, cut-to-length, or blanked, Hascall Steel Co. has you covered. Drop by our shop at, call us at (888) 579-5902, or fill out our online form for more information about our services.

  • “The material you sent us was the best we have ever run. We will be buying from you again”
    Production Supervisor at a Holland based metal stamper
  • “Paperwork was in order and passed our receiving process.”
    Quality Manager From a Grand Rapids Laser Cutting Company
  • “Hascall Steel's team asked me highly relevant questions to identify my true needs”
    Purchaser - Tennessee Stamper
  • “I appreciate Hascall Steel for knowing the market and planning ahead”
    Program Buyer - Detroit Manufacturer
  • “Hascall Steel's team reached out to check proactively if I needed my standard order. I appreciate them looking out for me”
    Shop Supervisor at a West Michigan Fabrication Company


We love customer relationships that become true partnerships between your team and our sales representatives.

Request a Quote

At Hascall Steel we understand that part of being an expert is being able to tailor steel to your needs. With that in mind there are some key areas that will help us fulfill your steel order in a way that is best suited to your company’s capacities. By working with our sales team, we can adjust several aspects of your order to make things easier for your team members. Next are some areas to keep in mind that can improve efficiency and quality.


Often customers place an order with the following basic information: Quantity/Gauge/Width/Length/Steel Type…

However there are quite a few QUALIFIERS that will help us all get the best value from the informational exchange.


When discussing material with our Sales Team, be sure to include tolerances for your gauge, width, and length (if applicable). In some cases, Hascall can meet tolerances as low as +/-.001 on gauge, +/-.003 on width, and +/-.015 on length. Specifications – Many steel specifications come with sub categories that can alter chemistries and mechanical boundaries. Be sure to have the full specification when ordering or talk with your sales representative to discuss options.


Proper packaging can help reduce unloading and production time. ID – We offer ID sizes in 16”, 20”, and 24” OD – We are able to provide OD sizes up to 72” Skidding – Standard or custom skidding available, just let us know how you would like your material skidded to best meet your equipment needs.
Paper – Protective paper is standard on all orders but can be applied with standard or full wrapping both with and without Hascall Logos. Max Coil and Skid Weight – Coils can be adjusted to meet your max lift and coil capacities.
Offloading – Material can be shipped skidded or standing and set for Forklift on the side or the rear of the bed. Material can also be shipped ready for sheet lifter or overhead crane offload.


Steel is only good if it gets there when you need it. At Hascall we have an experienced Logistics team that will ensure that your steel arrives on time in the way that best suits your needs. Whether you would like delivery via our in-house Steel Man Transportation service or if you would like to pick up your material personally, our team can set up appointments that meet your schedule. Our Logistics team can also arrange a 3rd party carrier if needed. Delivery dates, times, and address should be discussed with your Sales Representative prior to ordering.


And lastly, we know each customer is unique. There may be special requests that we would love to accommodate. These may range from a sample of the steel attached to the packaging, to increased tag requirements and frequencies. We are happy to work with you in order to be your trusted choice in slit steel coil and blanks.