Metals Flashcards
Where are metals found on earth?
Underground
What are metals impure form?
Ore
Name the 3 categories of metals?
Ferrous, Non-ferrous metals and alloys
What is a ferrous metal?
Metals containing Iron
What is a non-ferrous metal?
Metals not containing Iron
Give the properties of Ferrous metals?
- Contains Iron
- Magnetic
- Do corrode in water
Name 5 Ferrous metals?
Steel
Iron
Cast Iron
Low carbon steel
High carbon steel
Give the properties of Non Ferrous metals?
- Don’t contain iron
- Not magnetic
- Won’t corrode in water
Name 5 Non Ferrous metals?
Zinc
Copper
Aluminium
Tin
Titanium
What is an alloy?
A mixture of 2 different elements (usually metals)
Name 4 alloys?
Stainless Steel
Brass
Magnesium
Pewter
Name the common characteristics of metals?
High melting/boiling point
Thermal and electrical conductivity
Ductility
Malleability
Toughness
Name the properties of Carbon steel?
Ductile & Hard
Name the properties of Mild Steel?
Tough, Malleable, Magnetic
Name the properties of copper?
Good conductor of heat and electricity, ductile, malleable, corrosion resistant
Name the properties of Stainless Steel?
Tough, Hard, Corrosion resistant
Name the properties of Zinc?
Excellent resistant to corrosion : used to cover nails
Name the properties of brass?
Copper 67% Zinc 33% - Corrosion resistant, Good fluidity/casts well
Name the properties of bronze?
Copper 88% Tin 12% - Malleable, ductile, corrosion resistant, good conductor
Name the properties of Aluminium?
Lightweight, Soft, Ductile, Malleable
What is plastic coating?
Process of coating metal with a thermoplastic. The metal is heated, then dipped in powdered plastic.
What is powder coating?
This process uses an electrostatic charge to coat the metal product with polyester powder. Once coated, the product is baked in an oven to produce a smooth, high-gloss finish.
What is Anodizing?
A process for coating a metal, especially aluminium, with a protective oxide layer by an electrolytic process.
What is Galvanising?
A process in which steel is coated with zinc to prevent corrosion.