Aluminium
Aluminium
Material Info
About
CNC Aluminium is a precision-machined metal available in three structural grades, produced using multi-axis CNC milling from certified aluminium stock. It delivers tight dimensional tolerances, excellent surface quality, and the full mechanical properties of the alloy — making it the right choice for functional prototypes, end-use parts, jigs and fixtures, and structural components where dimensional accuracy and material integrity are non-negotiable. Available with a range of surface finishes including anodising and powder coating. For grade selection advice or finish questions, reach out to [email protected]. For a full grade comparison, download the Grade Overview Sheet.
| Grade | Alloy | Tensile Strength | Yield Strength | Corrosion Resistance | Weldability | Primary Use |
|---|---|---|---|---|---|---|
| 5083 | AlMg4,5Mn | 270–350 MPa | 125 MPa | Excellent | Excellent | Marine, offshore, cryogenic |
| 6082 | AlMgSi1 | 310 MPa min | 260 MPa | Good | Good | General structural, transport |
| 7075 | AlZnMgCu1,5 | 503 MPa min | 435 MPa | Low — anodise recommended | Not recommended | Aerospace, defence, high-load |
Color & Finishes
Our standard finish, direct from the cutting tool with a clean machined surface at Ra 3.2 μm.
A Type II anodised finish that adds a clear protective oxide layer, improving corrosion resistance and surface hardness — available in natural (clear/silver) and black
A durable polymer coating cured in an oven, available in any RAL colour — specify your required colour in the order notes.
A finer surface finish of Ra 1.6 μm is readily available on request — add your required Ra value and the surfaces it applies to in the order notes
Technology
- CNC Machining
Material Properties
Description
Design Guidelines
Bounding Box
Maximum Bounding Box
3-axe: 480 x 280 x 80mm
5-axe: 480 x 180x 80mm
Minimum Bounding Box
X + Y + Z > 12 mm
The bounding box is a 3D imaginary outline of a box that encloses the smallest area occupied by your model. Your model must be within the minimum and maximum bounding box sizes. If the size of the model is close to the maximum bounding box, then the printing orientation will be restricted.
Walls
Minimum wall thickness: 1.5 mm. Recommended: 2.5 mm or greater.
A supported wall is connected at least on two sides of the wall, while an unsupported wall is connected only on one side of the wall. Walls that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wall geometry of the model. Please consider the size of your model and reinforce the walls or add support structures as needed as minimum guidelines will not always be adequate for large models.
Wires
Minimum feature width: 0.8 mm. Recommended: 1.5 mm or greater.
Minimum feature width: 1.5 mm. Recommended: 2.0 mm or greater.
A wire is a circular, rectangular or even triangular feature that is thinner in its unconnected directions than its length. A supported wire is connected at least on two sides of the model, while an unsupported wire is connected on one side of the model. Wires that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wire geometry of the model. Please consider the size of your model and reinforce the wires or add support structures as needed as minimum guidelines will not always be adequate for large models.
Clearance
Minimum clearance between separate features: 0.2 mm. For assemblies or press-fit features, specify the required fit class (e.g. H7/h6) in your technical drawing.
Clearance is the space between two individual parts in a model. If the space among the individual parts do not meet the minimum clearance, then parts can fuse together or can be difficult to clean. This is important for movable pieces like hinges, gears, etc.
Interlocking & Enclosed Parts
Interlocking
No
Enclosed
No
Parts in File
1
Accuracy
Where no tolerance is specified, parts are manufactured to DIN ISO 2768-fH (fine class general tolerances) as standard — see our CNC Tolerance Reference Sheet for full details. For tighter or specific tolerances, attach a technical drawing with the required tolerances clearly called out
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