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Non Ferrous Metals

Non Ferrous Metals. Aluminum. Relatively new material Requires little energy to produce 10 kwh for each pound Ore is generally strip mined. Commercially Pure Aluminum. Why we use it It is light weight – 1/3 weight of steel and cooper Excellent corrosion characteristics

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Non Ferrous Metals

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  1. Non Ferrous Metals

  2. Aluminum • Relatively new material • Requires little energy to produce • 10 kwh for each pound • Ore is generally strip mined

  3. Commercially Pure Aluminum • Why we use it • It is light weight – 1/3 weight of steel and cooper • Excellent corrosion characteristics • Surface lends it self to many types of finishes • High electrical conductor • Good reflector of heat and light • Easy to weld • Disadvantages • Low strength • Not able to be heat treated

  4. Aluminum Alloys • Small amounts of manganese increase the strength of aluminum • Silicon or magnesium or both together produces good corrosion resistance much improved strength • Copper zinc produce alloys high strength to weight ratios

  5. Fabrication of Aluminum products • Aluminum made by reduction furnace pot – element is heat to get separation of element and impurities • Element removed and placed into ingots • Ingots cooled and shipped away to fabrication facilities • Rolling – extruding – forging and casting • Rolling – heated metal is passed through rollers to set desire shape • Used to produce plates, sheets, bars, rods • Plate is .25 in. or larger • Sheet .006 to .25 in • Foil is less then .006 in. • Extruding – heated aluminum passes through a die • Used to produce structural shapes, architectural shapes, electrical bar conductors • Forging – heated metal pushed into desire shapes • Casting – heated metal poured into mold

  6. Aluminum uses • Door window jambs • Flashing • Curtain wall panel frames • Thresholds • Threads • Handrails • Rails • Mullions • Gravel stops • Sliding • Gutters • wire

  7. Copper • Ore first crushed then ground into pulp • Wetted copper tends to float • Froth overflows • Heat creates to layers • Matte of copper • Slag of impurities - disregarded

  8. Brass • Copper and zinc • Zinc 5 to 40% • Copper 65 to 70% • Rich color • Resistance to saltwater

  9. Bronzes • Copper and tin • Tin 10% • High strength • Corrosion resistance

  10. Copper and copper alloy uses • Copper used outdoors for color and resistance

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