Types of Expanded Metal Based on Thickness and Hole Size

Expanded metal is a sheet of metal that is cut and stretched to form a perforated mesh pattern. This material is often used in various sectors, from construction and industry to modern architectural design.
One of the things to consider when choosing expanded metal is its thickness and hole size, as these two factors significantly affect its strength, flexibility, and functionality.

Let's learn about the various types of expanded metal based on these specifications so you can choose the one that best suits your project needs!

1. Based on Thickness
The thickness of expanded metal is usually expressed in millimeters (mm) and affects the material's strength and durability.

a. Thin Expanded Metal (0.3–1 mm)
This type is lightweight and easy to shape, suitable for:

• Ventilation guards and air filters
• Interior or decorative design
• Ceiling linings and room partitions

Advantages: flexible, easy to cut, and does not require heavy supporting structures.

b. Medium Expanded Metal (1–3 mm)
This type is most often used for general purposes because it offers a balance between strength and weight.

Common applications include:

• Guardrails
• Light work surfaces
• Machine guards

c. Thick Expanded Metal (3–6 mm or more)
This type has high resistance to loads and impacts, making it suitable for:

• Industrial platforms and steel stairs
• Drainage covers
• Light vehicle traffic areas

Thick expanded metal is usually made from carbon steel or galvanized steel for extra corrosion resistance.

2. Based on Hole Size (Mesh Size)
The hole size in expanded metal determines the level of air circulation, light, and the total weight of the material.

The most common hole shape is diamond, but there are also hexagonal and square mesh variations.

a. Small Hole (Less than 10 mm)
Suitable for applications that require filtration or protection from dust and small particles, such as:

• Ventilation filters
• Speaker or fan guards
• Interior decorative elements

b. Medium Hole (10–25 mm)
The most common size used in various construction projects.
Typically chosen for:

• Boundary walls
• Ceiling frames
• Building facades

c. Large Holes (More than 25 mm)
Provides air circulation and wider views, suitable for:

• Industrial floors and work platforms
• Steel stairs and small bridges
• Architectural facades with a modern look

3. Combination of Thickness and Hole Size
Selecting the best expanded metal is usually based on its primary function:

• High thickness + large holes: ideal for heavy loads and industrial areas.
• Medium thickness + medium holes: suitable for fences, ventilation, and general building elements.
• Thin thickness + small holes: suitable for decorative designs and light protection.

Conclusion
Knowing the types of expanded metal based on their thickness and hole size is crucial for choosing efficient and durable materials.

With the right selection, expanded metal can provide the best combination of strength, ventilation, and aesthetics.

If you're looking for SNI-certified expanded metal for various construction, architectural, and industrial projects, trust PT Intisumber Bajasakti (ISBS) — a trusted supplier of the best steel products and building materials in Indonesia.

💬 Contact Us Now!
📞 Phone: 021-66675999
🌐 Web: intisumberbajasakti.com
✉️ Email: info@intisumberbajasakti.com

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