Expanded Metal

Chatham Steel offers a large inventory of expanded metal sheet and grating for a wide variety of construction needs. Raised expanded metal is manufactured by slitting and stretching a sheet or roll of raw metal stock. Lighter in weight compared to standard bar gratings, raised expanded metal grating is measured by the nominal size of diamond opening, short-way X thickness, and X width and X length.

Types and Sizes of Expanded Metal Sheets and Grating 

Expanded metal sheet is available in several lb. types, and the numbers indicate lbs/sf., or pounds per square foot. Chatham Steel carries 3 lb. expanded metal grating, 4 lb. expanded metal grating, 6.25 lb. expanded metal grating, and 7 lb. expanded metal grating. 3 lb. and 4 lb. expanded metal grating are the two most widely used gauges of expanded metal. Expanded metal sheets come in various widths and lengths. 

Flat expanded metal is raised expanded metal that has been cold flattened, leaving a smooth, flat surface with diamond-shaped openings. The sheet length is usually elongated about five percent. Once flattened, the expanded sheet is sent through a leveler to maintain its flatness. Both raised and flat expanded metal grating products are available in many material options, such as carbon steel, galvanized steel, aluminum, and stainless steel. 

Expanded carbon steel is widely used throughout all types of industrial applications. Galvanized expanded metal is coated with a layer of zinc for added wear and corrosion resistance. Stainless steel and aluminum expanded metal products are additional options where corrosion resistance is a priority. Heavy-duty expanded metal grating has performed extremely well in many industrial environments because of its excellent strength-to-weight ratio, see-through visibility, ease of maintenance, and an open mesh that allows liquids to drain through and gasses to ventilate effectively.

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Expanded Stainless Sheet Product Buyer’s Guide

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Expanded Stainless Sheets