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Expanded Metal · DIN 791 / ASTM F1267 · Application guide

What Is Flattened Expanded Metal Used For?

A flattened expanded aluminum mesh sheet with smooth diamond pattern on a workbench, soft light

Flattened Expanded Metal (DIN 791 / ASTM F1267) is specified where the duty calls for smooth-faced guards, shelves, grilles and filter layers made from expanded metal that is cold-rolled flat after expansion. The sections below cover the typical end-uses by industry, the mesh, micron and material decisions for each, installation practice, and the applications this product type is not suited to.

Typical Applications for Flattened Expanded Metal

Where Flattened Expanded Metal is specified and bought:

  • Shelving & racking: flat expanded shelves in cabinets and carts.
  • Grilles & HVAC: flat filter supports and diffuser faces.
  • Enclosures & partitions: flat, see-through panels.
  • Air filters: expanded aluminum filter layers.

How to Specify Flattened Expanded Metal for Your Application

  • Pattern: SWD × LWD after flattening (the diamond lengthens slightly).
  • Thickness: Flattening reduces thickness by about 10–15 %.
  • Material: Carbon steel, stainless or expanded aluminum.
  • Standard: Quote DIN 791 / ASTM F1267 and the size designation from the table on the product page, plus any value you changed in the technical drawing.

Handling & Installation Practice

  • Frame or band edges, as flattened strands remain sharp.
  • State the diamond direction on drawings for consistent panels.

Common Selection Mistakes with Flattened Expanded Metal

  • Expecting the stiffness of raised expanded metal.
  • Ordering the wrong diamond direction.

Where Flattened Expanded Metal Is Not the Right Choice

Not for walkways that need slip resistance — use raised expanded metal or grating.

If This Construction Is Not the Right Fit

Closely related mesh types for the same duty — compare open area, aperture range and cleanability before you commit.

Standard (Raised) Expanded MetalStandard (Raised) Expanded MetalDIN 791 / ASTM F1267Micro Expanded Metal MeshMicro Expanded Metal MeshDIN 791Hexagonal Hole Perforated SheetHexagonal Hole Perforated SheetDIN 24041 (Hv)Round Hole Perforated SheetRound Hole Perforated SheetDIN 24041 / ISO 7806

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

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Set the size and options in the drawing above, then send the exact configuration straight to this form.

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Specification
Business Information

Dimensions & Specifications (DIN 791 / ASTM F1267)

Mesh designation (SWD x LWD)SWD (mm)LWD (mm)Strand width (mm)Strand thickness (mm)Open area (%)
6x126121.01.062
10x2010201.51.566
12.5x2512.5252.02.060
16x3416342.02.070
22x5022503.03.067

Frequently Asked Questions

What is Flattened Expanded Metal used for?

Smooth-faced guards, shelves, grilles and filter layers made from expanded metal that is cold-rolled flat after expansion.

What is flattened expanded metal?

Expanded metal rolled flat after expansion to give a smooth surface.

Is expanded aluminum available flattened?

Yes, and it is widely used in air filters.

Flattened or raised expanded metal?

Flattened is smooth and thinner; raised is stiffer and gives grip.

Can I get a quote for Flattened Expanded Metal to my own drawing?

Yes. Set the size and any custom value in the technical drawing on the product page and send it with the quote form; we reply within one business day.