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1. Non Ferrous Metals

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

4. Commercially Pure Aluminum
 Why we use it
 It is light weight – 1/3 weight of steel and
cooper
 Excellent corrosion characteristics
 High electrical conductor
 Good reflector of heat and light
 Disadvantages
 Low strength
 Not able to be heat treated

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

6. 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

7. Brass
 Copper and zinc
 Zinc 5 to 40%
 Copper 65 to 70%
 Rich color
 Resistance to
saltwater

8. Bronzes
 Copper and tin
 Tin 10%
 High strength
 Corrosion
resistance

9. Copper and copper alloy uses
 Copper used
outdoors for color
and resistance