Key Takeaways:
- Material Identity: Aluminum is both an element and a non-ferrous metal, making it ideal for structural use in its raw form.
- Application Versatility: Suitable for custom SEG frames, telescopic assemblies, and CNC projects thanks to its lightweight strength.
- Fabrication Control: Testrite Aluminum supplies materials for professionals comfortable with cutting, drilling, and in-house assembly.
Aluminum is used in more places than most people realize. It is found in modular displays, adjustable structures, retail fixtures, and behind the scenes in film sets and live events. What makes it so popular is its unique mix of lightness, strength, and workability. It is easy to transport, efficient to cut, and holds up well when used correctly. Still, one fundamental question often comes up: Is aluminum actually a metal?
At Testrite Aluminum, we work directly with professionals who build with aluminum. We do not offer pre-cut kits or ready-made frames. Instead, we supply raw aluminum extrusions, tubing, and profiles that fabricators cut and assemble themselves. Our customers include printers, retail display builders, CNC shops, and industrial manufacturers who need control over the materials they work with. They choose Testrite Aluminum because they want precision, flexibility, and stock that fits their exact specifications.
In this piece, we will answer the question, “Is aluminum a metal?” and break down its properties, uses, and why it remains a top choice for fabrication professionals.
Is Aluminum a Metal or an Element?
Aluminum is both an element and a metal. On the periodic table, it is represented as Al with atomic number 13. It belongs to the boron group on the periodic table, a family of post‑transition metals. In nature, aluminum is not found in its pure form because it reacts easily with other elements. It is typically refined from bauxite before it becomes usable for industrial or structural applications.
From a material classification standpoint, aluminum is a non-ferrous metal, which means it contains no iron. It is valued for its low weight, corrosion resistance, conductivity, and ability to be formed or machined with precision. Fabricators appreciate these characteristics because aluminum behaves differently from steel or iron and often offers greater flexibility during cutting, mitering, drilling, and assembly.
Its metallic traits, such as electrical and thermal conductivity, reflectivity, and malleability, make it useful across many industries. Companies working with items like heavy-wall tubing or extrusion profiles rely on these elemental characteristics when selecting materials for displays, frames, mechanical components, or CNC projects.
What Type of Metal Is Aluminum?
Aluminum is a non-ferrous, lightweight metal that resists rust, making it ideal for both indoor and outdoor use. Its high strength-to-weight ratio and low density make it a common choice for SEG extrusions, heavy wall tubing, and other structural applications.
It is easy to cut and machine, yet strong enough for framing, telescoping assemblies, and portable builds. Its dimensional stability supports precise work during fabrication.
Aluminum is also non-magnetic and reflective, which makes it worthwhile in lighting, shielding, and display-focused designs. For an overview of how different aluminum types support fabrication needs, see this introduction to Testrite Aluminum.
Properties of Aluminum Metal
Aluminum is a lightweight, strong, and easy-to-work-with material, making it a go-to choice for fabrication across various industries. Its key properties directly affect how it’s cut, assembled, and finished.
Lightweight but Strong
Aluminum offers a high strength-to-weight ratio, making it ideal for SEG frames, modular displays, and other builds that need structural support without added bulk.
Corrosion Resistant
Aluminum forms a protective oxide layer, which helps it resist corrosion without the need for coatings. This makes it a wise choice for indoor structures, such as fixtures and display frames.
Easy to Machine
It cuts and drills easily using non-ferrous blades, reducing time and tool wear. Fabricators can shape parts quickly while maintaining clean edges and precision.
Conductive and Reflective
Aluminum has good electrical and thermal conductivity, as well as high reflectivity, making it a valuable material for signage, lighting, and enclosures.
These qualities make aluminum a practical option for efficient fabrication. Learn more in this article on custom aluminum tubing.
Is Aluminum Stronger Than Steel?
Steel is stronger in terms of raw tensile strength, but aluminum is often the better choice for fabrication due to its lighter weight, corrosion resistance, and ease of machining.
Strength-to-Weight Advantage
Aluminum weighs about one-third as much as steel. For SEG frames, telescoping builds, and modular systems, this weight savings is often more valuable than maximum strength.
Corrosion Resistance
Aluminum naturally resists rust, while steel requires coatings to prevent corrosion. This makes aluminum a better choice for reusable displays or projects that are exposed to moisture.
Easier to Fabricate
Aluminum cuts faster and with less effort using non-ferrous blades, which supports faster production. For more on how material thickness impacts performance, see this article on thin-wall aluminum tubing.
While steel may be required for heavy-load applications, aluminum is often the more efficient option for custom builds that prioritize weight, flexibility, and speed.
Common Applications of Aluminum in Fabrication
Aluminum is widely used in industrial and commercial fabrication for its strength, light weight, and corrosion resistance. Fabricators choose specific tubing profiles and wall thicknesses based on project needs and in-house capabilities.
SEG Extrusions for Display Systems
Extruded aluminum shapes are often used in SEG frames for retail and event displays. These profiles are cut, mitered, and assembled using compatible brackets. Reviewing specifications in advance helps ensure accurate fits and clean results.
Round and Rectangular Tubing for Structural Projects
Aluminum round tubing and rectangular tubing are frequently used in architecture, prototyping, and product development. They support structural frames, enclosures, and lightweight mechanical parts. Wall thickness and diameter should match the structural demands of the project.
Square Telescopic Tubing for Adjustable Systems
Square telescopic tubing is ideal for builds that require adjustability or compact storage. Its precise tolerances allow smooth sliding and stable positioning. For more on design planning, see this article on custom aluminum telescopic tubing assemblies.
Aluminum’s flexibility across product types gives fabricators control over structure, aesthetics, and cost. Each material is intended for professionals who cut, assemble, and finish their own builds.
Common Applications of Aluminum in Fabrication
Aluminum’s strength, light weight, and corrosion resistance make it ideal for a wide range of custom builds. Testrite Aluminum offers raw profiles that fabricators cut and assemble in-house for display systems, structural frames, and adjustable assemblies.
SEG Extrusions for Custom Frames
Extruded aluminum shapes are commonly used in SEG frames for retail and event displays. These profiles are designed for cutting and joining with compatible brackets. Always review product specs to ensure accessory compatibility before fabrication.
Tubing for Structural Builds
Aluminum round and rectangular tubing is used in architectural builds, CNC work, and lightweight structural systems. Fabricators cut these materials to length and use their own fasteners or welds to assemble frames and supports.
Telescopic Tubing for Adjustable Systems
Square telescopic tubing is ideal for collapsible structures and height-adjustable builds. Proper sizing ensures smooth movement and secure fitting. For more information, refer to this article on custom telescopic tubing assemblies.
Tips for Working with Aluminum Materials
Fabricating with aluminum requires the use of proper tools, precise planning, and strict adherence to safety protocols. Testrite Aluminum supplies raw material, not pre-cut or assembled parts, so professionals must be ready to cut, drill, and assemble components in-house.
Use the Right Tools
Use saw blades made for non-ferrous metals. These help reduce heat and burrs, which is essential for clean cuts on SEG extrusions and tight-fitting joints.
Prioritize Safety
Wear safety glasses, gloves, and hearing protection when cutting or machining. Use ventilation or dust collection when working with round or rectangular tubing for longer sessions.
Check Bracket Compatibility
Review product specifications before cutting. Testrite Aluminum lists recommended accessories, but it is the fabricator’s responsibility to confirm compatibility.
Account for Wall Thickness
Thin-wall tubing is easier to machine but offers more flex. Heavier wall tubing provides greater strength and requires slower feed rates and stronger tooling. For more information, refer to this article on thin-wall aluminum tubing.
Test Fit First
Always dry-fit your components before final assembly to ensure a proper fit. This helps ensure alignment and clean finishes, especially when working with telescoping or display tubing.
Fun Facts About Aluminum
While aluminum plays a serious role in structural and display fabrication, it also has a unique history and some surprising characteristics that make it stand out from other metals.
It Was Once More Valuable Than Gold
In the 19th century, aluminum was considered a luxury material. Because it was difficult to extract from ore, it was more expensive than gold or silver. Once modern refining processes were developed, their value shifted from rarity to utility, making it a practical choice for industrial applications.
It’s Infinitely Recyclable
Aluminum can be recycled indefinitely without losing its core properties. This makes it a sustainable material choice for companies that prioritize environmental impact. Recycled aluminum retains the same strength, corrosion resistance, and machinability as new material.
Aluminum is the Most Abundant Metal in the Earth’s Crust
Aluminum accounts for roughly 8% of the Earth's crust, making it the most abundant metallic element. However, it’s rarely found in pure form and must be extracted from bauxite ore through a refining process.
Used in Aerospace for the Same Reasons Fabricators Choose It
The aerospace industry depends heavily on aluminum for its strength, weight reduction, and performance in variable conditions. These are the same properties that make it ideal for event production builds, telescoping systems, and custom structural displays.
For more insights into how companies are using aluminum across industries, see this guide on why custom aluminum tubing is right for your new product.
Final Thoughts
Aluminum remains one of the most adaptable metals in fabrication, offering a balance of strength, weight, and workability that meets the demands of professionals across industries. From digital printing structures to CNC-machined components, aluminum’s properties support precise, in-house builds without sacrificing performance.
For companies that value control over material dimensions, bracket compatibility, and overall design, Testrite Aluminum offers raw extrusions and tubing specifically designed for cutting, mitering, and assembly in your own facility. Whether you're fabricating SEG frames, industrial supports, or modular structures, aluminum offers the flexibility and reliability to build with confidence in your tools and your team.
Read also:
- Build Fast with 1" Square Tubing and Press‑Fit Plastic Corners
- Custom Powder Coated Aluminum Tubing
- Why Retailers Prefer Testrite’s 1” OC Aluminum Slatwall
Frequently Asked Questions About Is Aluminum a Metal?
What is aluminum’s melting point, and why does it matter in fabrication?
Aluminum melts at approximately 660.3°C (1220.5°F). This relatively low melting point makes it suitable for extrusion and casting; however, fabricators working with aluminum typically rely on mechanical joining or cold-forming techniques rather than welding, unless they are adequately equipped for welding.
Can aluminum be welded easily?
Yes, but it requires experience and the right equipment. Aluminum welding typically involves TIG (Tungsten Inert Gas) or MIG (Metal Inert Gas) processes. Its thermal conductivity and oxide layer make welding more challenging than steel, so fabricators need to adjust techniques accordingly.
What alloys are commonly used in aluminum tubing?
Common aluminum alloys for tubing include 6061 and 6063. 6061 is stronger and more suitable for structural applications, while 6063 offers better surface finish and is preferred for architectural and display uses.
Why is aluminum considered a good thermal conductor?
Aluminum has a thermal conductivity of 235 W/m·K, allowing it to transfer heat quickly. This makes it ideal for heat sinks, lighting structures, and enclosures that require temperature control.
How does aluminum perform in low temperatures?
Aluminum actually becomes stronger and less brittle in cold environments, unlike some metals that become fragile. This makes it a good material for outdoor or refrigerated structures.
Can aluminum be anodized, and what is the process for doing so?
Yes. Anodizing aluminum enhances corrosion resistance and allows for decorative finishes. It creates a controlled oxide layer on the surface, which can be dyed in various colors and provides a more rigid, more durable exterior.
Is aluminum safe for food contact applications?
Yes. Many aluminum grades are approved for use in food contact applications. However, in industrial fabrication, only food-safe finishes and processes should be used if parts will come into contact with food.
Does aluminum interfere with electronics?
Aluminum is non-magnetic and provides good shielding against electromagnetic interference (EMI). It is often used in housings or enclosures for this reason.
Is aluminum suitable for use in marine environments?
Aluminum resists corrosion from saltwater better than many metals, especially when properly coated or anodized. Marine-grade alloys, such as 5052 or 6061, are often used in boats and coastal installations.
Can aluminum be painted or powder-coated?
Yes. Aluminum surfaces can be painted, powder-coated, or anodized, but proper preparation is essential. Cleaning, etching, and applying a primer coat help ensure adhesion and durability.
