Standard Expanded Metal vs Flattened Expanded Metal





Standard-Expanded-Metal-vs-Flattened-Expanded-MetalWhat’s the difference between standard expanded metal vs flattened expanded metal?

Flattened expanded metal is simply standard expanded metal that goes through the “cold rolling” technique. Cold rolling is the manufacturing process in a steel mill that involves flattening the sheet by passing it through flattening rollers. This takes all the ridges out, therefore, produces a flat and level surface. This process stretches the pattern even further to produce a thinner, flatter, and wider/longer metal sheet.


Expanded-Metal-Regular or raised sample
Standard Expanded Metal
Flattened Expanded Metal
Expanded-Metal-Grating sample
Expanded Metal Grating
Standard Expanded Metal Railing

Standard Expanded Metal

Standard expanded metal is sometimes referred to as raised metal because of its more three-dimensional look. This angled, or bumpy property adds strength and rigidity.

Raised metal uses include:

  • Platforms and walkways
  • Metal gate protection panels
  • Racks and shelving
  • Strainers
  • Security walls and doors
  • Speaker grilles
  • Wind and machine guards
  • EMI/RFI shielding
  • Fluid and air filters


  • Distributes the load of the metal to the supporting frames, therefore increasing structural strength
  • Security aspects
  • Can provide light reduction
  • Allows air, liquid, and light to pass through
  • Exceptional gripping properties
Flattened Expanded Metal Ceiling

Flattened Expanded Metal

Flattened expanded metal offers many of the advantages of standard expanded metal, such as versatility, a wide variety of opening sizes, low maintenance and cost-effectiveness. Since cold rolled expanded metal is lighter than standard expanded metal, it suits applications that require a nimbler and more agile product that still offers the necessary strength and durability.

Note regarding flattened; sizes will vary depending on whether the cylinder is passed along the design’s short path (SWD, narrow direction of diamond pattern) or long design path (LWD, wider, longer direction). diamond pattern).

Flattened metal uses include:

  • Infill panels
  • Fencing
  • Walkway railings
  • Security partitions
  • Security walls and doors
  • Grilles and vents
  • Ceiling tiles
  • Shelving


  • Martial weight is less than raised
  • Allows air, liquid, and light to pass through
  • Architectural benefits due to aesthetic appearance
Expanded Metal Grating Platform

Expanded Metal Grating

Another, more heavyweight version is expanded metal grating. This metal is thicker and can be turned sideways for extreme nonslip walking surfaces such as catwalks.

Expanded metal grating is made of a single solid sheet of material so it tends to be stronger and requires less welding.

Best Fabricators Around

Some of our metalwork capabilities include cutting, punching, shearing, sawing, cut-outs, welding, drilling, and slitting. We are a one-stop-metal-shop. Contractors, end-users and metal suppliers all use our services to save on costs, overcome their project challenges and customize the expanded metal products they purchase from us.

We Will Help You Choose the Right Metal for Your Project

Knowing which option your project requires can be tricky, that’s why we are here. Our skilled sales reps will recommend the best metal product for your project.

Marco Specialty Steel stocks a large amount of all expanded metal sheet products and has a rush, after-hours 24/7 service. Contact us to learn more.

Marco Specialty Steel: Quality. Speed. Reliability.