1.7 Performance Characteristics of Metals Flashcards
Give the 5 stock forms of metals
- Sheet
- Plate
- Bar
- Tube
- Structural angular
Define non-ferrous and give three examples
A metal that does not contain iron, it’s not magnetic and does not rust
- Aluminium
- Copper
- Zinc
- Silver
- Gold
- Titanium
- Tin
State three properties/characteristics of aluminium
- Lightweight
- Corrosion-resistant
- Ductile
- Malleable
- Can be welded
- Electrical and thermal conductor
State two uses of aluminium
- Aircraft bodies
- Drink cans
- Bike frames
- Packaging
State three properties/characteristics of copper
- Electrical and thermal conductor
- Ductile
- Malleable
- Tough
- Corrosion-resistant
- Can be soldered and brazed
State two uses of copper
- Electric wire
- Printed electrical circuits
- Waterpipes
- Hot water tanks
State two properties/characteristics of zinc
- low melting point
- Good corrosion restistant
State two uses of zinc
- Galvanising steel as a protective coating for dustbins
- Buckets
- Farm gates
- Intricate die casting
State three properties/characteristics of sliver
- Corrosion-resistant
- Malleable
- Ductile
- Can be soldered
State two uses of silver
- Cutlery
- Jewellery
- Used for plating other materials
State three properties/characteristics of gold
- Corrosion-resistant
- Malleable
- Ductile
- Can be soldered
State two uses of gold
- Jewellery
- Connectors
- Electric components
- Switch components
State three properties/characteristics of titanium
- Lightweight
- Hard
- High melting point
- High resistance to corrosion
State two uses of titanium
- Aircraft and spacecraft
- Tooth implants
- Golf clubs
- Ships hulls
State three properties/characteristics of tin
- Corrosion-resistant
- Malleable
- Ductile
- Low melting point
State two uses of tin
- Coating for food cans
- Soft solder
It’s rarely used in pure form
Define a ferrous metal and give three examples
A metal that contains mostly iron and carbon. Ferrous metals are magnetic and will rust
- Low carbon steel
- Medium carbon steel
- Cast iron
State three properties/characteristics of low carbon steel
- Malleable
- Poor resistance to corrosion
- High tensile strength
- Ductile
- Low melting point
State two uses of low carbon steel
- Nuts, bolts, screws
- Car bodies
- Washers
State three properties/characteristics of medium carbon steel
- Hard
- Tough
- Less ductile than low carbon steel
- Malleable
State two uses of medium carbon steel
- Garden tools
- Springs
State three properties/characteristics of cast iron
- Brittle core
- Hard outer skin
- Good under compression
State two uses of cast iron
- Engine blocks
- Disc brakes
- Machine parts
Define non-ferrous alloys and give three examples
A mixture of two or more metals none of which contain iron
- Bronze
- Brass
- Duralumin
- Pewter
State three properties/characteristics of bronze
- Tough
- Corrosion-resistant
- Can be cast
90% copper, 10% tin
State two uses of bronze
- Coins
- Statutes
- Bearings
State three properties/characteristics of brass
- Corrosion-resistant
- Electrical and thermal conductor
- Cast well
- Ductile
65% copper, 35% zinc
State two uses of brass
- Boat fittings
- Ornaments
- Cast values and taps
- Door furniture
State three properties/characteristics of duralumin
- Lightweight
- Equivalent strength to low carbon steel
- Becomes hard as worked
- Ductile
Aluminum with 4% copper, 1% magnesium, and manganese
State two uses of duralumin
- Aircraft parts
- Vehicle parts
State three properties/characteristics of pewter
- Malleable
- Casts well
- Low melting point
85-99% tin with the remainder consisting of copper and antimony
State two uses of pewter
- Sports trophies
- Flasks
- Decorative items, such as photo frames and candlesticks
Define ferrous alloys and give three examples
A mixture of two or more metals, at least one of which contains iron
- Stainless steel
- High-speed steel (HSS)
- Die steel (tool steel)
State three properties/characteristics of stainless steel
- Corrosion-resistant
- Hard
- Tough
- High melting point
18% chrome, 8% nickel
State two uses of stainless steel
- Cutlery
- Kitchenware
- Sinks
State three properties/characteristics of high speed steel (HSS)
- Hard
- Tough
- High level of resistance to friction heat
18% turgsten, 4% chromium, 1% vanadium, 0.5-0.8% carbon
State two uses of high speed steel (HSS)
- Drill bits
- Tool blades
- Milling cutters
- Routing bits
State two properties/characteristics of die steel (tool steel)
- Hard
- Tough
State two uses of die steel (tool steel)
- Fine press tools
- Blanking punches and dies
- Extruder dies
