Materials Metals

Metals, such as steel, contain Iron and therefore need to be protected from corrosion caused by exposure to air and water. What category of metals is this?

• Ferrous Metals

• Non-Ferrous metals

Metals which do not contain Iron, are more resistant to corrosion and require less maintenance. Which category of metals is this?

• Ferrous metals

• non-ferrous metals

Which category of metals require protection using a variety of finishes, including special oil based paints, electroplating processes such as galvanising, and plastic dip coating.

• Ferrous Metals

• Non Ferrous Metals

An Alloy is formed by mixing two or more elements, of which at least one must be a metal. A binary alloy is formed when only two elements are mixed together.

• True

• False

Steel is an alloy

• True

• False

Alloys can only contain metals

• True

• False

Varying the ratio of carbon to iron alters the hardness of the steel.

• True

• False

Which of the following are Reasons for using an alloy? (choose 3)

• You may need a material with improved Strength-to-weight ration

• You may need a material with improved Appearance.

• You may need a material with improved Strength in tension, compression or torsion.

• You may need a material with improved Corrosion resistance

• You may need a material with improved Safety

Which of the following are alloys? (choose 3)

• Copper

• Steel

• Iron

• Duralumin

• 18ct Gold

Which of the following are alloys? (choose 3)

• Lead

• Bronze

• Brass

• Aluminium

• Stainless Steel