What Is Expanded Metal Thickness?

Expanded metal thickness refers to the thickness of the solid metal sheet before the expanding process. It is measured in two standard systems: US Standard Gauge (ga) and metric millimeters (mm).

Thickness is the single most important factor determining the strength, weight, load capacity, and durability of expanded metal. Thicker sheets produce stronger, heavier mesh suitable for structural use, while thinner sheets create lightweight, flexible mesh for filters and decoration.

Our Anping expanded metal factory controls thickness tolerances within ±0.05mm for precision applications.

Standard Expanded Metal Thickness Chart (Gauge ↔ mm)

This chart is the global industry standard for expanded metal thickness used by engineers, contractors, and architects.

How Thickness Affects Expanded Metal Performance

Expanded metal thickness directly impacts key performance characteristics:

Strength & Load Capacity
Thicker expanded metal supports significantly more weight. 9ga/7ga thickness is required for pedestrian flooring and industrial platforms.

Weight & Shipping Cost
Thicker mesh is heavier, increasing material and shipping costs. Lightweight (18ga–22ga) is ideal for cost-sensitive decorative projects.

Rigidity & Flexibility
Thin expanded metal (20ga–24ga) is flexible and can be bent or curved. Thick expanded metal (9ga+) is rigid and non-bendable for structural use.

Durability & Impact Resistance
Thicker mesh resists dents, impacts, and vandalism – perfect for high-traffic industrial and security applications.

Recommended Expanded Metal Thickness by Application

Use this quick guide to select the right expanded metal thickness for your project:

Filtration & Fine Screens: 20ga–24ga (0.6–1.0mm)
Architectural Facades & Wall Panels: 16ga–18ga (1.2–1.5mm)
Security Fencing & Screens: 14ga–16ga (1.5–2.0mm)
Machine Guards & Safety Barriers: 12ga–13ga (2.4–2.7mm)
Walkways & Drainage Grates: 10ga–11ga (3.0–3.5mm)
Industrial Flooring & Platforms: 7ga–9ga (3.8–4.8mm)
Stucco & Plaster Lath: 18ga (1.2mm) expanded metal lath

Thickness for Different Materials

Expanded metal thickness availability varies by base material:

Galvanised Steel: Full range (0.6mm–4.8mm / 24ga–7ga) – most common
Stainless Steel (304/316): 0.8mm–4.0mm (22ga–9ga) – corrosion-resistant
Aluminum Alloy: 1.0mm–3.0mm (20ga–11ga) – lightweight, non-rusting
Carbon Steel: 1.5mm–6.0mm (16ga–7ga) – heavy structural use

We use premium hot-dip galvanized steel and stainless steel to ensure consistent thickness and quality.

How to Measure Expanded Metal Thickness

To verify expanded metal thickness accurately:

1. Use a digital caliper or micrometer for precision measurement.
2. Measure the strand (metal strip) thickness, not the opening area.
3. Take multiple measurements across the sheet to confirm consistency.
4. Compare the measurement to the standard gauge-mm chart above.

Our quality control team measures every batch of expanded metal thickness before shipment to meet international standards.

Custom Expanded Metal Thickness Options

We offer fully customized expanded metal thickness to meet unique project requirements:

• Non-standard thickness (0.5mm–6.0mm)
• Mixed-thickness panels for specialized applications
• Precision thickness for filtration and architectural use
• Heavy-gauge custom thickness for industrial structural projects

Our custom expanded metal service supports engineers and architects with exact thickness specifications.