Exploring Different Types and Grades of Extruded Aluminum Pipes

Extruded aluminum pipes are versatile materials utilized in a wide range of industries, from construction and transportation to aerospace and consumer products. Understanding the various types and grades of extruded aluminum pipes is essential for selecting the most appropriate material for specific applications. This article delves into the different types and grades of extruded aluminum pipes, providing valuable insights into their properties, applications, and performance characteristics.

Alloy Types

Extruded aluminum pipes are primarily classified based on their alloy type. Common alloy types include:

1000 Series (Pure Aluminum): These alloys consist of at least 99% pure aluminum, offering excellent corrosion resistance, workability, and electrical conductivity.

2000 Series (Copper): Copper-based alloys provide high strength and hardness, but have limited weldability and corrosion resistance.

3000 Series (Manganese): Manganese-based alloys are strong, corrosion-resistant, and easy to weld.

5000 Series (Magnesium): Magnesium-based alloys have excellent strength-to-weight ratios, making them suitable for weight-sensitive applications.

6000 Series (Silicon): Silicon-based alloys combine strength, weldability, and heat-treatability.

7000 Series (Zinc): Zinc-based alloys offer high strength, hardness, and wear resistance.

Temper Designations

The temper of an extruded aluminum pipe refers to its thermal and mechanical treatment, which affects its physical properties. Temper designations include:

F (As Fabricated): Indicates the pipe has not received any specific heat treatment after extrusion.

O (Annealed): The pipe has been annealed to achieve maximum softness and ductility.

H (Strain-Hardened): The pipe has been subjected to cold working to increase its strength and hardness.

T (Heat-Treated): The pipe has been solution heat-treated and then artificially aged to enhance its strength and toughness.

Shape and Dimensions

Extruded aluminum pipes are available in various shapes, including round, square, rectangular, and custom profiles. Dimensions such as diameter, thickness, and length can also vary depending on the application requirements.


Due to their versatility, extruded aluminum pipes find applications in numerous industries, such as:

Construction: Framing, roofing, siding, heating and cooling systems

Transportation: Automotive frames, aircraft components, marine fittings

Industrial: Chemical processing, power generation, fluid handling

Consumer Products: Sports equipment, furniture, appliances

Selection Criteria

Selecting the right type and grade of extruded aluminum pipe for a particular application requires careful consideration of the following factors:

Strength Requirements: The strength of the pipe will depend on the alloy type and temper designation.

Corrosion Resistance: The alloy type and environment will influence the corrosion resistance of the pipe.

Weldability: Certain alloys and tempers may have specific weldability requirements.

Formability: The pipe’s formability is important for applications involving bending or shaping.

Cost and Availability: Cost and availability should also be considered when selecting an extruded aluminum pipe.