2011 Aluminum Pipe
The 2011 aluminum alloy is a copper-containing aluminum alloy, known for its excellent machinability and high productivity. It is particularly noted for being one of the most free-cutting aluminum alloys due to the addition of bismuth (Bi). In medium-strength applications, the T3 condition offers great formability with lower strength requirements. For high-strength applications, it is recommended to use the T8 condition. This material is highly suitable for automated lathes, as it produces very fine chips that have a self-cleaning effect on the cutting surface, reducing the need for chip separators. The machining performance of 2011 aluminum is rated as level A, making it ideal for precision parts such as automotive components, mechanical hardware, clock gears, pipelines, and audio-visual connectors.

Applications
This alloy is widely used in various industries, including hardware manufacturing, automotive oil system components, clock mechanisms, gears, pipelines, audio-visual rotating joints, photography equipment, instrument shafts, military defense products, industrial connectors, odometers, potentiometers, timers, electronic auxiliary devices, and programmer core shafts.

Chemical Composition (mass fraction) (%)

Si

Fe

Cu

Si+Fe

Mg

Pb

Zn

Bi

Other

Al

Single

Total

0.40

0.70

5.0–6.0

0.40

–

0.2–0.6

0.30

0.2–0.6

0.05

0.15

Balance

Mechanical Properties
The 2011 aluminum alloy exhibits good mechanical properties, making it suitable for a wide range of engineering applications. Below are some key mechanical characteristics:

Mechanical Properties, Material Characteristics (Reference Values)

Tensile Strength
σb (MPa)

Yield Strength
σ0.2 (MPa)

Elongation
δ5 (%)

Brinell Hardness
HBW

Density
ρ (g/cm³)

Specific Heat Capacity
c [J/(kg·K)]

Thermal Conductivity
λ [W/(m·K)]

Heat Capacity
c [J/(kg·K)]

≥310

≥235

10

–

2.85

 – – –

In summary, 2011 aluminum pipe is a versatile and high-performance material that is ideal for complex machining operations. Its unique combination of strength, machinability, and cost-effectiveness makes it a popular choice in many industrial and mechanical applications. Whether you're working on automotive parts, precision machinery, or electronic components, 2011 aluminum can deliver reliable results with minimal waste and high efficiency.

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