20mm Round Perforated Aluminium Sheets | 28mm Pitch x 2mm Thick

Perforated Aluminium Sheets

Top quality perforated aluminium sheets supplied straight from Warrington, UK.

There are a variety of industrial and architectural applications for perforated aluminium sheets. Speciality Metals offers 20mm round perforated aluminium sheets with a 28mm pitch and a 2mm thickness. They are ideal for food processing, medical equipment and clean rooms due to their excellent hygiene properties. Furthermore, they are odorless and corrosion-resistant, ensuring their longevity and safety. They are malleable, lightweight and good conductors of thermal and electricity, making them ideal for a variety of applications. In general, these sheets are durable and versatile, making them a reliable choice for designers, architects and engineers.

Specifications:

• Metal – Aluminium
• Hole Shape – Round
• Aperture – 20mm
• Pitch – 28mm 
• Thickness – 2mm
• Open Area – 46.3% Open Area

We also are the exact suppliers for you because:

• FREE UK delivery on all orders
• Order dispatch within 24 hours of order
• Located in Warrington, UK which is the UK home of mesh and metals
• Our experienced staff are experts in the mesh market and care personally about your customer experience

Furthermore we stock a vast range of plain sheet metal options that compliment our mesh range perfectly.

FAQs About This Product

Can Aluminium Perforated Mesh be Used in Security Applications?

Yes, aluminum perforated mesh can be used in security applications. Due to its strength-to-weight ratio, aluminum perforated mesh offers a durable barrier that is difficult to penetrate or damage, while the perforations provide visibility and airflow. This combination makes it ideal for applications such as security screens for windows and doors, where the mesh acts as a deterrent against forced entry without obstructing views or light. The size and pattern of the perforations can be customised based on the specific security requirements, with smaller holes offering greater resistance to intrusion. Additionally, the mesh can be treated or coated to enhance its strength and durability further. While aluminum is not as strong as steel, its resistance to corrosion, especially in challenging environments, ensures longevity in security installations.

What are the Thermal Properties of Aluminium Perforated Metal?

Aluminum perforated metal possesses distinctive thermal properties that can influence its applications and performance. Aluminum, as a material, has a high thermal conductivity, allowing it to rapidly absorb and dissipate heat. This makes it an excellent material for applications where heat transfer is essential, such as in certain heat exchangers or radiators. In architectural applications, the perforations in the metal can play a role in its thermal behavior. For instance, in sunscreens or facades, the perforated aluminum can provide shade, reducing direct solar gain and thereby aiding in the thermal management of a building. Additionally, the perforations can facilitate ventilation, enabling passive cooling. It’s also worth noting that aluminum has a relatively low thermal emissivity, meaning it doesn’t radiate heat as efficiently as some other materials. However, when combined with its high reflectivity, this property can further enhance its role in managing solar radiation in architectural applications. In essence, the thermal properties of aluminum perforated metal, including its high thermal conductivity and its ability to manage solar gain and ventilation, make it a versatile material in both industrial and architectural contexts.

Do Aluminium Perforated Metal Influence the Reflection and Refraction of Light?

Indeed, aluminum perforated metal can influence both the reflection and refraction of light, creating unique optical effects and offering functional advantages in various applications. Here’s how:

1. Reflection:

   • Aluminum, in its natural state, has a high reflectivity, which means it can effectively reflect a significant portion of the light that strikes its surface. The reflective property of aluminum can be enhanced through polishing or the application of reflective coatings.
   • The perforations in the metal can also influence light reflection. Depending on the size, shape and arrangement of the perforations, light can scatter in different directions, creating distinctive visual patterns. This scattered reflection can be leveraged in architectural applications to generate aesthetic effects or to control glare.

2. Refraction:

   • Refraction primarily occurs when light passes through a medium and changes its direction due to a change in speed. While metals, including aluminum, are not transparent and don’t refract light in the traditional sense, the perforations in the mesh can create an effect similar to refraction.
   • When light passes through the gaps in the perforated metal, it interacts with the edges of the perforations. This interaction can cause the light to bend slightly or scatter, creating patterns that might appear refractive in nature. Additionally, if the perforated metal is installed in front of a transparent or translucent medium, such as glass, the combined effect of the perforations and the medium can influence the direction and quality of the refracted light.

3. Applications:

   • Due to its ability to manipulate light through reflection and the pseudo-refractive effects of its perforations, aluminum perforated metal is widely used in architectural and design applications. It can be used as decorative panels, sunscreens, or facades to control light ingress, create visual effects or reduce glare and solar heat gain.

Can Aluminum Perforated Sheet be Used as Electrical Applications Underground?

Aluminum perforated sheet, while possessing several beneficial properties, is not commonly the first choice for underground electrical applications for various reasons. Here are the considerations:

1. Conductivity: Aluminum is an excellent conductor of electricity, which makes it suitable for some electrical applications. However, its conductivity is lower than that of copper, which is more frequently used in underground electrical installations.

2. Corrosion: While aluminum naturally forms a protective oxide layer when exposed to air, this layer can be compromised in underground environments, especially in the presence of moisture, certain chemicals, or when in contact with dissimilar metals. This can lead to galvanic corrosion, which would adversely affect the material’s longevity and performance in underground electrical applications.

3. Mechanical Properties: Underground installations are exposed to mechanical stresses due to ground movements, weight of the earth, and potential interference from other underground utilities or activities. Aluminum, being softer than some other metals, can be susceptible to damage under such conditions.

4. Terminations and Connections: Making terminations and connections with aluminum can be more challenging than with metals like copper. Oxides on the aluminum surface can interfere with the electrical connection, leading to increased resistance or potential points of failure. Proper care, special connectors and anti-oxidant compounds are required to ensure reliable connections.

5. Thermal Expansion: Aluminum has a higher coefficient of thermal expansion compared to metals like copper. This means it expands and contracts more with temperature changes, which could pose challenges in some underground electrical applications where temperature fluctuations can be significant.

Check out our blog discussing What is Perforated Mesh. It will prove a useful read to help you to make an informed decision on which material would work best for you. 

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Our goal for our blogs, videos and help guides is to answer as many questions as possible to help to explain the possibilities of mesh to our customers.  Contact us today if you have any questions at all. We are always really keen to help in any way that we can.

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