Punched aluminium sheet
Punched aluminium sheets are innovative lightweight materials characterized by regularly spaced holes or patterns punched into a solid aluminium sheet. Their unique combinations of strength, weight, and aesthetic appeal make them an essential component across various industries.
What is a Punched Aluminium Sheet?
A punched aluminium sheet is an aluminium alloy sheet that has undergone a mechanical punching process to create uniform holes or patterns. This process reduces weight while maintaining structural integrity, enhances airflow, provides acoustic benefits, and offers impactful design aesthetics. Such sheets cater to both function and form effectively.
Features of Punched Aluminium Sheets
| Feature | Description |
|---|---|
| Lightweight | Reduced weight due to punched holes without significantly compromising strength and rigidity. |
| High Strength-to-Weight Ratio | Aluminium alloys provide enhanced durability combined with weight optimization. |
| Corrosion Resistance | Naturally forms a protective oxide coating; suitable for harsh outdoor environments. |
| Excellent Thermal/Electrical Conductivity | Provides thermal dissipation and maintains electrical conductivity based on the alloy used. |
| Versatile Hole Patterns | Variety of standard and custom shapes, sizes, and arrangements for aesthetics & functionality. |
| Acoustic Properties | Allows sound penetration and noise control for specific industrial applications. |
| Easy Fabrication | Simple to cut, bend, weld, and finish, enabling easy onsite adjustments. |
| Eco-Friendly & Recyclable | Aluminium is infinitely recyclable making these sheets an environment-conscious choice. |
Chemical Composition
Punched aluminium sheets are generally derived from popular aluminium alloys such as 1100, 3003, 5052, 6061, as well as 5000 and 6000 series. Below table illustrates typical chemical compositions (wt.%) of these alloy families:
| Alloy | Al | Si | Fe | Cu | Mn | Mg | Zn | Cr | Ti | Others |
|---|---|---|---|---|---|---|---|---|---|---|
| 1100 | 99.0+ | ≤0.4 | ≤0.4 | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.10 | ≤0.05 | ≤0.03 | ≤0.05 |
| 3003 | 97-99 | 0.6 | 0.7 | 0.1 | 1.0 | 0.05 | ≤0.10 | ≤0.10 | ≤0.03 | ≤0.05(Mn+Si+Fe) |
| 5052 | 94.7+ | 0.25 | 0.4 | 0.1 | 0.1 | 2.2-2.8 | 0.1 | 0.15 | - | ≤0.15 (Cr+Fe) |
| 6061 | 97.9 | 0.4 | 0.7 | 0.15 | 0.15 | 0.8-1.2 | 0.25 | 0.04 | 0.15 | < 0.15 (Cr+Fe) |
Note: Specific alloy and temper greatly affect sheet properties.
Technical Specifications
| Property | Specification |
|---|---|
| Sheet Thickness | 0.5 mm to 5.0 mm (custom thickness available) |
| Hole Diameter Size | 1 mm to 50 mm (custom patterns possible) |
| Percent Open Area | Typically varies from 10% to 60% via hole arrangement |
| Width | Up to 2000 mm commercially standard |
| Length | Up to 6000 mm or as per slide requirements |
| Surface Finish Options | Mill finish, anodized, PVDF coated, powder coated |
| Hardness (Brinell) | Generally 30 - 110 HB (depends on alloy and temper) |
| Tensile Strength | Around 100 MPa to 350 MPa |
| Density | Approx. 2.7 g/cm³ |
Applications of Punched Aluminium Sheets
Architectural & Design
- Decorative panels and façades
- Sun shading and ventilation panels
- Balustrades and railing infills
- Ceiling tiles and interior claddings
Industrial
- Machine guards and protective covers
- Noise controlling barriers and enclosures
- Ventilation grilles and heat dissipation panels
Transportation
- Lightweight partitions in vehicles and aircraft
- Grilles and filters in automotive panels
- Load modules and trays to decrease transportation weight
Agricultural & Food Industry
- Sifting and screening materials
- Food contact surfaces requiring corrosion resistance
Electronics & Electrical Enclosures
- Shielding panels with consistent airflow
- Heat dissipation plates for electronic devices
Advantages at a Glance
| Benefit | Reason |
|---|---|
| Weight Reduction | By incorporating holes, the overall material usage and product weight decrease noticeably. |
| Enhanced Airflow | Ideal for cooling and ventilation systems critical in machinery and buildings. |
| Aesthetic Appeal | Provides creative freedom with customizable patterns and finishes for architecture interiors. |
| Corrosion Resistance | Aluminium's oxide surface enhances long-term durability even in harsh weather conditions. |
| Easy Installation | Lightweight and adaptable for complex constructions and on-the-spot modifications. |
| Hygiene & Maintenance | Smooth surfaces inhibit microbial growth, suitable for hygienic zones in food processing. |
Punched aluminium sheets are functional and beautiful materials blending durability, versatility, and performance. Their unique configuration optimizes weight-to-strength ratios making them invaluable in modern engineering, architecture, and design. When selecting punched aluminium sheets, alloys, thickness, and hole design must align with specific application needs to maximize benefit.
For custom inquiries or technical assistance, feel free to reach out to our expert team. We support turnsolutions tailored to specialized industrial and commercial applications.
