Metals

Question 1

What are ferrous metals

Answer 1

all contain iron ferrite and have high tensile strength and durability

Question 2

Properties of cast iron

Answer 2

Hard but brittle. Resists deformation and rust.

Question 3

Properties of low carbon/mild steel

Answer 3

Tough and ductile. Rusts easily if not protected

Question 4

Properties of high carbon steel

Answer 4

Hard, but brittle. Hard wearing, resists abrasion and retains its shape

Question 5

Uses of cast iron

Answer 5

Kitchen pans, machine bases, manhole covers

Question 6

Uses of low carbon steel/mild steel

Answer 6

Car bodies, steel building frames, pipelines.

Question 7

Uses of high carbon steel

Answer 7

Tools, blades, scissors

Question 8

What are non ferrous metals

Answer 8

A group of pure metals and do not contain iron

Question 9

Examples of non ferrous metals

Answer 9

Zinc, copper, tin, aluminium

Question 10

Examples of ferrous metals

Answer 10

Cast iron, low carbon/mild steel, high carbon steel

Question 11

Properties of zinc

Answer 11

brittle, yet malleable. High corrosion resistance

Question 12

Properties of copper

Answer 12

Ductile and malleable. Good electrical conductor

Question 13

Properties of tin

Answer 13

Malleable and ductile, high corrosin resistance. Good electrical conductor

Question 14

Properties of aluminium

Answer 14

Lightweight, ductile, resists corrosion

Question 15

Uses of zinc

Answer 15

To galvanise steel

Question 16

Uses of copper

Answer 16

Plumbing supplies, electrical cables.

Question 17

Uses of tin

Answer 17

Solder, plating surfices such as cans

Question 18

Uses of aluminium

Answer 18

Bike frames, drink cans, takeaway trays.

Question 19

What are alloys

Answer 19

A mixture of at least one pure metal and another element. They are harder than pure metals as they contain atoms of different sizes.

Question 20

High speed steel composition

Answer 20

Chromium molybdenum, tungsten vanadium, cobalt carbon

Question 21

Properties of high speed steel

Answer 21

Can withstand high temperatures when machining at high speeds.

Question 22

Uses of high speed steel

Answer 22

Cutting tools such as drill bits, mill cutters, taps and dies.

Question 23

Stainless steel composition

Answer 23

Low carbon 0.03-0.08%
Chromium 10.5-26%

Question 24

Properties of stainless steel

Answer 24

Hard, ductile. Rust resistant. Chromium layer protects steel from corrosion

Question 25

Uses of stainless steel

Answer 25

Cutlery, kitchen and medical equipment

Question 26

Brass composition

Answer 26

Copper:65%
Zinc:35%

Question 27

Properties of brass

Answer 27

Malleable and easily cast. Good corrosion resistance.

Question 28

Uses of brass

Answer 28

Muscial instruments, plumbing fitments and ornate artefacts