Metals

Question 1

What is an Alloy?

Answer 1

A metal made of two or more metals (a combination) that does not contain iron and doesn’t rust

Question 2

Name Non Ferrous Alloys

Answer 2

• Aluminium
• Copper
• Zinc
• Titanium
• Steel

Question 3

Describe the features of non ferrous alloys

Answer 3

• Corrosion resistant and do not rust
• Lightweight
• malleable and ductile
• good electrical conductivity
• Lighter than ferrous metals
• Made of two or more metals combined

Question 4

Non ferrous alloy

Answer 4

• Do not contain iron
• Non ferrous alloys hold a distinct an irreplaceable role in multiple sectors, this is due to their defining characteristics, being resistant to corrosion, lightweight and their thermal conductivity makes them the material of choice in certain applications

Question 5

Describe an example of a Ferrous Alloy

Answer 5

• Stainless steel contains iron and the addition of Chromium provides corrosion resistance
  Stainless steel is an alloy of Chromium and Nickel, it is widely used in cutlery as its resistant to corrosion, lightweight and resistant to stains and scratches

Question 6

Ferrous Alloy

Answer 6

• A combination of two or more metals, containing iron, carbon and one other element
• Contains iron

Question 7

List the Ferrous Alloys

Answer 7

• Stainless steel
• Die steel
• Carbon steel
• Cast Iron

Question 8

Describe malleability

Answer 8

• The ability of a metal to be reshaped under compressive strength without breaking or cracking
• This enables metals to be rolled, pressed or hammered into thin sheets or various shapes

Question 9

Is metal renewable?

Answer 9

• Metal is a non-renewable material which cannot be naturally replaced over a short period of time. Once used there therefore there will be no more available.
• Most metal is infinitely recyclable and can be melted down and formed into new products prolonging its life.

Question 10

What is wasting of metal?

Answer 10

Wasting of metal refers to the degradation of metal or the loss due to various factors such as corrosion, erosion, wear or tear over time, this leads to weakening or deterioration of the metal object.

Question 11

Metal finishes

Answer 11

• Coating
• Polishing
• Grinding to create a smooth surface
• Finishes improve aesthetics and durability

Question 12

Steel and Stainless steel

Answer 12

• Steel is a Ferrous alloy and contains iron therefore it does not require a finish because it won’t rust
• Steel is a non ferrous alloy and does not contain iron therefore it requires a finish to prevent corrosion