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Steel Extruder vs Aluminum Extruder: Which Material is Best for You?

by:TENGDA     2023-07-18


Extruding is one of the most commonly used manufacturing processes for metal materials. The process involves shaping and forming metallic materials by pushing them through a die or forming tool under high pressure. During the extrusion process, manufacturers can use different materials such as steel and aluminum. However, the choice of material affects the quality of the final product. Thus, choosing the best material for your extrusion needs requires careful consideration of the strengths and limitations of these two materials. This article presents a comprehensive analysis of the two materials, and an in-depth discussion of their advantages and disadvantages.

1. Properties of Steel Extrusion

Steel extrusion is a process that involves shaping and pressing steel into a specific shape or profile. Steel is a strong and durable material, and it can be used in a range of applications, including construction, automotive, and aerospace. Steel generally has better strength, stiffness, and durability than aluminum, and it can withstand high pressure and extreme temperatures.

2. Properties of Aluminum Extrusion

Aluminum extrusion involves shaping and pressing aluminum into specific profiles or shapes. Aluminum is a lightweight and versatile material that is easy to fabricate, weld and assemble. Aluminum is corrosion-resistant, and it is easy to maintain, making it a popular material for a range of applications, including transportation, construction, and consumer electronics.

3. Strengths of Steel Extrusion

One of the main advantages of using steel in extrusion processes is its strength. Steel can withstand high pressure, and it is an excellent option for structural applications that require strength and durability. Steel is also an excellent choice for use in harsh environments, as it can withstand extreme temperatures and adverse weather conditions.

4. Limitations of Steel Extrusion

Despite its strength, steel has several limitations that can affect the choice of material in extrusion applications. Steel is denser than aluminum, which can limit the design flexibility and increase the weight of the finished product. Moreover, steel is prone to corrosion, and it requires regular maintenance to prevent deterioration.

5. Strengths of Aluminum Extrusion

Aluminum is a lightweight material that is versatile and easy to fabricate. Aluminum extrusion is an economical option, and it can be used to produce complex shapes and profiles. Moreover, aluminum is corrosion-resistant and requires minimal maintenance, making it an ideal option for outdoor applications.

6. Limitations of Aluminum Extrusion

Although aluminum has several advantages, it also has some limitations that can affect the suitability of the material for specific applications. One of the main limitations of aluminum is its lower strength compared to steel. Aluminum is also prone to deformation and can wear out quicker than steel under heavy loads. Moreover, aluminum is a poor conductor of electricity, and it can be challenging to weld.

7. Comparison between Steel and Aluminum Extrusions

When comparing steel and aluminum extrusions, several factors influence the choice of material, including the application, cost, strength, and formability. In terms of strength, steel has the advantage over aluminum, especially in heavy-duty applications. However, aluminum is lighter, making it more versatile and less costly to transport.

Moreover, aluminum provides better corrosion resistance than steel, especially in outdoor applications. Aluminum is also less expensive than steel, making it an excellent option for low-cost applications. Finally, aluminum extrusions offer better formability and design flexibility than steel extrusions, enabling manufacturers to create intricate shapes and profiles.


Choosing the best material for your extrusion needs requires an understanding of the strengths and limitations of steel and aluminum. Steel extrusions are an excellent choice for heavy-duty applications that require strength, durability, and resilience. However, aluminum extrusions are a versatile and cost-effective option for creating intricate shapes and profiles, especially for outdoor applications. Ultimately, the choice of material depends on the specific application, and manufacturers should consider the factors discussed in this article when choosing between steel and aluminum extrusions.

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