Metals

Question 1

What is a ferrous metal?

What is an alloy?

Answer 1

Metal containing iron - steel

Mixture of two or more metals - stainless steel and duralumin

Question 2

Name and state properties of a ferrous metal

Answer 2

Steel
Lightweight
Easy to mould
Magnetic
Recyclable
Takes a lot of energy to mine and heated in furnace
Cars, food tins, aerosol cans

Question 3

Name and state properties of non ferrous metals

Answer 3

Aluminium
Good strength to weight ratio, doesn’t rust
Easy to recycle- less energy that extracting
Lots of energy to extract, has a flavour to it
Soft metal
Cans, bike frames

Tin
Easy to mix with other metals, low melting point, not toxic, doesn’t corrode rapidly
Contains impurities
Food and drink tin cans

Question 4

Name and state properties of alloys

Answer 4

Stainless steel
Resists corrosion, high quality surface finish, high impact resistance, lightweight, low maintenance, recyclable
Hard to mould, hard to machine, expensive

Duralumin
Strength to weight ratio, malleable, casts well hard, tough, resists corrosion, performs in high temperatures
Can suffer from corrosion
Becomes brittle through use

Question 5

Advantages of using metals for packaging

Answer 5

Added security to products
Can hold liquid
Can be made to any shape and size 
Embossed and debossed- surface texture
Can be printed on or paper label stuck onto it