wisepowder: What You Need to Know about Expanded Standard

What You Need to Know about Expanded Standard

Dec 17 2020 at 23:11

If you bought a bag of sugar and got home to discover it was half filled with sawdust, you’d demand your money back and probably report the store to the authorities. If you ordered ¾ #9 standard expanded metal and it arrived in a different size or gauge, would you realize you had been cheated? Could you measure it to see if it conforms to the specification? Do you even know there is a specification?To get more news about Expanded metal sheet, you can visit mesh-fabrics official website.

Many service centers purchase and stock expanded metal sheet. The Expanded Metal Manufacturers Association has spent the last three years updating EMMA 557-15, the Standard for Expanded Metals. EMMA is working with the American Society of Testing Materials to assure that its specification, ASTM F-1267-15, is also mathematically and physically accurate. Below is an introduction to both specs.

To identify the product, it helps to be familiar with some basic nomenclature. First, the “pattern” is determined by the user’s needs and is designated by the diamond size and the material thickness. Over time, industry practice has made some of these designations less accurate. For instance, ½ #13 (stated as “half thirteen”-) has a half-inch opening and is made from 13-gauge steel. Conversely, ¾ #9 has an opening of 0.923 inch and is made from 10-gauge material.

Besides the pattern, users must consider whether they need “standard” (also called raised or regular) or “flattened” expanded metal. Raised material, with its multiple facets, is what comes out of the expanding press. Flattened material has been run through a cold mill. Standard material is often used for its traction, in a ladder or catwalk for example, while flattened material might be used for a grilling surface.Finally, the sheet size must also be specified. Expanded products typically are produced in 4-by-8 sheets, but many sizes are available. Sheets also can be sheared to produce custom sizes.



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