Perforated vs expanded metal
Comparing two common sheet metal products to help you choose the right one.
Industrial grade
Certified alloys & standard gauges
Custom fabrication
Cut-to-size sheets and formed panels
Perforated metal
Punched round, square, or slotted holes
Precision open area & architectural aesthetics
Expanded metal
Slit and stretched diamond pattern
High strength-to-weight with zero scrap loss
Compare perforated and expanded metal
Choose the right open mesh or punched sheet for your load, airflow, and budget needs. Both product lines are fabricated to order by Mutual Metal.
Punched Sheet Precision
Best suited for applications demanding precise hole patterns, acoustic absorption, filtration, and architectural panel facades with smooth margins.
Expanded Joint Matrix
Ideal for walkways, security enclosures, machinery guards, and high-strength load bearing where weight savings and raw cost efficiency are critical.
| Specification Parameter | Perforated Metal | Expanded Metal |
|---|---|---|
| ProductionManufacturing process | Cold punching sheet metal with custom die patterns (slugs removed) Precise punch tooling allows exact hole sizes and custom margins. | Slitting and stretching solid sheet simultaneously with zero scrap Expanded in one operation; creates a rigid, single-piece diamond matrix. |
| Flow & VentilationTypical open area range | 10% to 70% open area Engineered for precise fluid, acoustic, or light diffusion control. | 25% to 85% open area High transparency and airflow with low overall material weight. |
| DurabilityStructural strength | Moderate to high rigidity; dependent on hole pattern & solid margins Unperforated side margins maintain flat plate integrity for framing. | High strength-to-weight ratio; uncut joint knuckles distribute loads evenly Standard raised profile provides natural slip-resistant traction. |
| AestheticsVisual pattern | Round, square, slotted, hexagonal, or custom decorative perforations Clean geometric repeatability suitable for visible architectural facades. | Standard raised or flattened diamond, hexagonal, and architectural mesh Distinctive industrial diamond texture with dimensional shading. |
| Use CasesTypical applications | Acoustic panels, filtration screens, HVAC diffusers, decorative cladding Optimal for precise particle retention and architectural infill panels. | Walkways, catwalks, machine guards, security fencing, plaster lath Primary choice for heavy-duty safety flooring and protective barriers. |
| EconomicsRelative cost | Moderate to premium (scrap slug allowance and tooling setups) Higher tooling investment offset by tight dimensional tolerances. | Cost-effective (no scrap loss; yield expands 2x to 3x base sheet) Lower raw material cost per square foot for large coverage areas. |
Cold punching sheet metal with custom die patterns (slugs removed)
Precise punch tooling allows exact hole sizes and custom margins.
Slitting and stretching solid sheet simultaneously with zero scrap
Expanded in one operation; creates a rigid, single-piece diamond matrix.
10% to 70% open area
Engineered for precise fluid, acoustic, or light diffusion control.
25% to 85% open area
High transparency and airflow with low overall material weight.
Moderate to high rigidity; dependent on hole pattern & solid margins
Unperforated side margins maintain flat plate integrity for framing.
High strength-to-weight ratio; uncut joint knuckles distribute loads evenly
Standard raised profile provides natural slip-resistant traction.
Round, square, slotted, hexagonal, or custom decorative perforations
Clean geometric repeatability suitable for visible architectural facades.
Standard raised or flattened diamond, hexagonal, and architectural mesh
Distinctive industrial diamond texture with dimensional shading.
Acoustic panels, filtration screens, HVAC diffusers, decorative cladding
Optimal for precise particle retention and architectural infill panels.
Walkways, catwalks, machine guards, security fencing, plaster lath
Primary choice for heavy-duty safety flooring and protective barriers.
Moderate to premium (scrap slug allowance and tooling setups)
Higher tooling investment offset by tight dimensional tolerances.
Cost-effective (no scrap loss; yield expands 2x to 3x base sheet)
Lower raw material cost per square foot for large coverage areas.
Need custom perforation tooling or expanded mesh sizing?
Send your dimensional tolerances, gauge thickness, and material specs to our fabrication engineering team.
Find the right metal specification for your project
Explore standard and custom patterns, or send us your drawings for a direct production estimate.
Perforated metal
Round, square, slotted, and architectural patterns tailored for screening, filtration, and cladding.
Expanded metal
Standard, flattened, and architectural mesh for security enclosures, walkways, and machine guards.
Direct custom quote
Submit your drawings, gauges, and quantity requirements for rapid engineering review and pricing.
Need standard bar grating or architectural fabrication? View all manufacturing capabilities in our technical resources or contact our industrial sales desk directly.