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Gun Metal, a bronze,an alloy of copper, tin, and a small amount of zinc. Al though originally used extensively for making guns (from which it received its name), it has been superseded by steel, and it is now chiefly employed in casting machine parts. The so-called 88ÃÂ¢Ã¢âÂ¬Ã¢â¬Å10ÃÂ¢Ã¢âÂ¬Ã¢â¬Å2(copper-tin-zinc) alloy is the "government bronze,"composed of 88% copper, 10% tin, and 2% zinc. The percentages of the three elements are varied slightly in gun metals produced for different purposes. The metal commonly called gunmetal today is very often steel treated to simulate the bronze alloy. In other cases,copper and tin are used alone; in still others, copper, tin, and leadare used.
Aluminum Secondary Services Shearing, Width Capabilities: 7" (178mm) - 62" (1575 mm) Shearing, Length Capabilities: Up to 192" (4876 mm) Shearing, Loading Gauge: Upto 0.080" (2.0 mm) Slitting, Width Capabilities: 0.75" (19mm) min Slitting, Loading Gauge: Up to 0.100" (2.5 mm) Other Secondary Services: Protective peel-able films International packaging Perforating and embossing Sustainability and LEED Recycled Content: 100% recyclable Reclaimed > 90.0% 201112 Mill06 Volatile Organic Compounds: The aluminum oxide layer does not contain any VOC's Warranty A 20-year limited warranty may be available upon request. Product Support Partners The anodized aluminum finish can be washed with mild soap and water followed by a clean water rinse. For more information on cleaning anodized aluminum, please refer to the Aluminum Association Publication 92, Care of Aluminum or AAMA 609610-09, Cleaning and maintenance guide for architecturally finished aluminum. Maintenance and Cleaning Document No: GUNMETAL.M.201510.R0Availability The standard lead time for stocked gauges and widths is two weeks for anodizing and one week for any secondary services suchas slitting, shearing and applying transparent protective films or paper.