Perforated Metal and Plastic

Ametco®'s Perforated Metal and Plastic gives you, the architect, the freedom of choice to design projects the way you want them. Although perforated material has been in use for over 100 years, each day new applications are being designed to meet the ever-changing demands of today’s world. Perforated metal is being used for a wider variety of applications than ever before. New construction projects are using perforated as acoustical wall and ceiling panels, hand rail infill panels, sun shading devices, point-of-purchase displays and many others, limited only by your imagination. The choice of metal or plastics not only allows the architect to choose the type of material, but also the choice of perforation patterns and percentage of open area required for specific projects. Perforations not only reduce the weight of the material, but also permit you to control the airflow, amount of visibility and sound levels. Ametco®’s computer-assisted perforating presses give you, the designer, far greater freedom than ever before.

MANUFACTURING METHODS
Our sophisticated perforating presses provide unparalleled flexibility in custom perforating applications. Using a 250 ton 60" wide Wegner high speed press, we pound out stock size perforations with great efficiency. The balance of our presses are set up for quick change-over, accommodating almost any punching configuration you can imagine.

Naturally, we stock the common sizes, gauges, and metals most customers expect. But it's our ability to setup for small runs of unusual configurations that sets us apart from the rest.

We pride ourselves on quick turnaround on all of our perforated products. Usually 24 hours on ready-to-ship items, and within your requirements on custom work when we have the die. We have over 65 die designs just waiting to get on press. We're sure one of them is right for you.

PRODUCT PRESENTATION
Ametco® offers literally thousands of combinations of perforation patterns in metal and plastic materials that can be used by Architects and designers to achieve sophisticated design effects. We offer immediate shipment from stock or patterns custom fabricated to your exact specifications. The patterns shown on this Profile represent some of the most widely specified items we make.



MATERIALS, FINISHES
Perforated sheets are available in Carbon Steel, Stainless Steel, Monel, Copper, Brass, Muntz Metal, Aluminum and a variety of Plastics. Call for assistance with specifying and selecting the optimum material for your design concepts.

Ametco® offers a polyester powder coating to add color and elegance to harmonize with any environment. This powder coating, over whichever material you select, is available in 15 standard colors.

Performance properties of the polyester coating are as follows.

SALT SPRAY RESISTANCE: (ASTM-B-117) Bonderite 1000 steel panels, in a scored condition, exhibit no undercutting after 500 hours in 5% salt spray testing at 95 degrees F and 95% humidity. No rusting or blistering on panel face. Under the same conditions after 1000 hours the panels showed less than 3/16" undercutting.
WEATHERABILITY: (ASTM D822) After one year exposure in South Florida with panels facing south and tilted at a 45 degree angle, a high gloss white polyester coating retains 88% of its gloss (gloss readings obtained on washed panels). No film failure. Ametco® Mfg. Corp. offers a 20-year Warranty on the polyester coating not to crack, peel or blister for a period of 20 years. Accidental damages, defects resulting from improper installation and damage from vandalism or abuse are not included. Warranty is limited to a prorated value of the coating, not to exceed the original value of the coating. Or, at Ametco®’s discretion, re-coating the panel but not to include labor for removal or reinstallation.

Perforated sheets may also be furnished unfinished, ready for finishing by others.

TECHNICAL SUPPORT
The following standards are intended to aid designers, engineers, and buyers of perforated products in selecting the correct item for their application. For simplicity, Ametco® has adopted the general terminology used by the Industrial Perforators Association. For closer tolerances than described here, please contact Ametco®'s sales department for details.

Sheet and Plate Size Specification
Standard stock size sheets and plates
(Typical: 36" x 96", 36" x 120", 48" x 96", 48" x 120")
The width and length will be standard mill shearing plus any stretch of the material by perforating, unless otherwise specified. For carbon steel sheets or plates, our tolerances are the same as the American Iron and Steel Institute.

Sheets and plates resheared after perforating
Length and width tolerances for:
thickness lighter than 1/8" = ±1/32"
thickness 1/8" to 3/16" incl. = ±1/16"
thickness heavier than 3/16" to 1/2" incl. = ±1/8"
thickness heavier than 1/2" = check with our Sales Dept.
If special re-square tolerances are required, consult our Sales Department

Thickness of Metals
Steel � Use "Manufacturer's Standard Gauge for Steel Sheets"
Stainless Steel � Use the U.S. Standard Gauge Table
Monel � Use the U.S. Standard Gauge Table
Copper, Brass or Muntz � Use the B&S Gauge Table
Aluminum � Use the B&S Gauge Table

Perforations
Round Perforations � Staggered (60 degree pattern) is standard. Variations include the 45 degree staggered, and Straight Line Pattern.
Square Perforations � Staggered Pattern or Straight Line Pattern.
Slotted Perforations � Side Staggered, End Staggered, or Straight Lines. Slotted Perforations will be round end slots; specify if square end slots are required.
Custom Perforations � Consult Ametco®.

Spacing of Perforations
Spacing for large perforations will be designated by either Centers of Perforations, or by the Open area required. Spacing for small perforations will be designated by either Centers, or Open area, or if more practical, by the Number of Perforations to the Square Inch.

Patterns of Perforations
Unfinished End Pattern � As a result of tool design, some specifications of staggered pattern perforations yield a pattern that appears incomplete at both ends of the sheet. This is an industry standard.

Finished End Pattern � As a result of tool design, some specifications of staggered pattern perforations yield a completed pattern on both ends of the plate. "Finished" end patterns are non-standard on most staggered pattern perforations, meaning the hole pattern is complete at the end of the sheet.

Staggered Perforations, both Round and Square � The pattern stagger is normally in the short dimension of the sheet. Holes in a straight row pattern are normally parallel to long dimension of sheet. On staggered pattern perforations, the end patterns will either be "finished" or "unfinished" depending on the tooling available. An unfinished end pattern is Standard; however, a finished end is available as a non-standard item. Consult Ametco® for details.

Slotted Perforations � Slots can be furnished parallel with either the length or width of the sheet in most cases.

Margins
The "margin" on a perforated sheet or plate refers to the distance from the edge of the sheet to the first perforation along the same dimension. "No margin" refers to the last row or set of perforations extending off the sheet or plate.

Perforated stock size sheets and plates.
The long side of a sheet will be supplied with minimum margins. The short side of a sheet will have either minimum margins or no margins.

Sheets and plates resheared after perforating.
Special margins are available, but they must carry a tolerance within the limits of the perforating tool.
Unfinished end pattern is standard in the industry.

Flatness of Sheets and Plates
Perforated sheets or plates can, generally, be finished to AISI flatness tolerances. However, if your job contains one of the following conditions, you should consult Ametco®'s Sales Department.

  • Perforated sheet has extra wide margins.
  • Blank areas required within the perforated area.
  • Perforated sheet has a large percentage of open area.
  • Heavy gauge metal in relation to the size of the perforation.
  • Special alloys.
  • Stretcher leveled sheets.

Customer Supplied Materials
Material furnished by the customer must be referred to as "Perforating and Processing Only." All materials furnished must be of perforating quality. The weight of material furnished refers to the weight before perforating.

Additional Services
If work in addition to perforating is to be performed, please submit detailed information and sketches to Ametco®.

For additional reference information and formulas used to calculate the amount of open area in a perforated sheet or plate, see our catalog in Sweets Files, 05735/AME.

CODES, CERTIFICATIONS

Ametco® produces its perforated products in accordance with accepted industry standards. Please call for details.

AVAILABILITY, COST

Availability: Ametco® can ship stock perforated materials immediately. Call to find out exactly what we have on hand. Custom designs and special materials require longer lead times and are quoted on a per job basis.

Cost: Costs may be obtained by calling Ametco® Manufacturing Corp. at (800) 321-7042.


Ametco Manufacturing Corp.
4236 Hamann Parkway
P.O. Box 1210
Willoughby, OH 44096
Tel: (440) 951-4300
Toll-Free: (800) 321-7042
Fax: (440) 951-2542
E-Mail: ametco@ametco.com
Web site: http://www.ametco.com