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Aluminium 6063-T5
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CNC Aluminium 6063-T5

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What is Aluminium 6063-T5?

CNC Machining

Aluminium 6063-T5 is a lightweight alloy with a natural silver-white appearance. It combines moderate strength, good corrosion resistance and a surface well suited to decorative finishing, making it useful for frames, housings,brackets and architectural components.

The T5 temper means the aluminium has been cooled after a hot shaping process, such as extrusion, and then artificially aged. Aluminium 6063 is commonly used for extruded profiles and heat sinks, where its thermal conductivity and ability to form complex profiles are valuable.

Custom parts can be produced using CNC milling or turning. As-machined surfaces retain fine tooling marks, while anodising can be specified where available to improve surface protection and appearance.

Material

Aluminium 6063-T5

Description

Strengths

Lightweight, corrosion-resistant and well suited to anodising. Good thermal conductivity and excellent extrudability.

Weaknesses

Lower strength than 6061-T6. Softer material requires care when machining and designing loaded threads. Welding and elevated temperatures can reduce strength.

Colour & Finishes

Silver White

Mechanical properties

Ultimate tensile strength

180–185 MPa

Yield strength

140–145 MPa

Modulus of elasticity

68–69 GPa

Elongation at break

11–12%

Physical properties

Density

2.70 g/cm³

Hardness

60 HB

Corrosion resistance

High

Magnetism

Non-magnetic

UK equivalent

Thermal properties

Maximum service temperature

160°C

Thermal expansion coefficient

23.0–23.5 × 10⁻⁶ /°C

Thermal conductivity

200–210 W/(m·°C)

Electrical properties

Electrical resistivity

3.2–3.3 µΩ·cm

Post treatments

Anodising compatibility

Suitable

Weldability

High

Common applications

Door and window frames

Curtain walls

transport interiors

heat sinks, exhibition stands and shelving

Values shown are typical supplier figures for Aluminium 6063-T5 and may vary with stock condition. Please confirm critical properties before production.

Frequently asked questions

What does T5 mean for aluminium 6063?

T5 means the alloy was cooled from the extrusion process and then artificially aged. It is softer and lower in strength than the T6 temper, but very well suited to extruded profiles and anodised parts.

Is 6063-T5 easy to machine?

It machines readily, but because it is a soft alloy it needs sharp tools and care with burrs, thin walls and loaded threads. It is best for parts where finish matters more than strength.

What tolerances can be held on 6063-T5 parts?

Being a softer temper, thin walls and fine features need more care than on 6061. Achievable tolerances depend on part size, geometry and features, so mark any critical tolerances on a 2D drawing with your upload and they will be reviewed and confirmed in your quote.

Is 6063-T5 good for anodising?

Yes. 6063-T5 anodises very well, giving an even decorative finish, which is why it is common for frames, trim and display parts.

What is 6063-T5 typically used for?

Typical uses include door and window frames, curtain walls, transport interiors, heat sinks, exhibition stands and shelving. For stronger parts consider 6063 in a higher temper, or 6061.

How long does it take to make 6063-T5 aluminium parts?

The typical lead time shown for 6063-T5 aluminium is 10 business days from an approved order. Quantity, finishing and any heat treatment can affect this, and your quote confirms the date before you order.

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