Metals

Question 1

What are the 2 groups of metals?

Answer 1

Ferrous and non-ferrous

Question 2

What is a Ferrous metal?

Answer 2

-Contains Iron
-Is magnetic
-Carbon contents
-Prone to corrosion when exposed to moisture and oxygen

Question 3

What is a non-ferrous metal?

Answer 3

-Dosen’t contain iron
-Resistant to corrosion
-Majority are non-magnetic (good for electronic devices and wiring)

Question 4

Name Ferrous metals

Answer 4

Cast Iron
Low Carbon steel
High Carbon Steel

Question 5

Name non-Ferrous metals

Answer 5

Aluminium
Copper
Zinc
Tin

Question 6

What’s an Alloy?

Answer 6

Metals fromed mixing two or more metals to produce a new metal with improved characteristics and properties

Question 7

Properties of Aluminium?

Answer 7

A pure metal (often alloyed with copper and manganese depending on application)
Lightweight, soft, ductile and malleable
A good conductor of heat and electricity
Corrosion resistant

Question 8

Properties of Copper

Answer 8

A pure metal
Extemely ductile and malleable
An excellent conductor of heat and electricity
Easily soldered and corrosion resistant

Question 9

Properties of Zinc

Answer 9

A pure metal
Weak in its pure state
High level of corrosion
Low melting point
Easily worked

Question 10

Name types of alloy’s

Answer 10

Brass, Stainless steel, high speed steel

Question 11

What happens to a metal when there is more carbon content?

Answer 11

The harder and less malleable the metal becomes

Question 12

Properties of Cast iron

Answer 12

Contains Iron and 3.5% Carbon
Hard surface but has a brittle soft core
Strong compressive strength
Cheap

Question 13

Properties of Low carbon steel (mild steel)?

Answer 13

Contains Iron and 0.15-0.35% carbon
Good tensile strength, tough, malleable
Poor resistance to corrosion

Question 14

Properties of High carbon steel (tool steel)?

Answer 14

Contains Iron and 0.70-1.4% Carbon
Hard but also brittle
Less tough, malleable or ductile than medium carbon steel

Question 15

Properties of Tin?

Answer 15

Pure metal
Soft ductile and malleable
Low melting point
Excellent corrosion resistance

Question 16

Properties of Brass- non-ferrous alloy?

Answer 16

Alloy of copper (65%) and zinc (35%)
Strong and ductile
Casts well
Corrosion resistant
Conductor of heat and electricity

Question 17

Properties of Stainless steel?

Answer 17

Alloy of steel including chromium (18%) and nickel (8%)
Hard and tough
Excellent resistance to corrosion

Question 18

Properties of duralumin?

Answer 18

Alloy of aluminium (90%) copper (4%) magnesium (1%) manganese (0.5-1%)
Strong, soft and malleable
Excellent corrosion resistance
Lightweight

Question 19

Common uses of Cast iron?

Answer 19

Vices, car brake discs, cylinder blocks, manhole covers

Question 20

Common uses of Low carbon steel?

Answer 20

Car bodies, nuts, bolts, and screws, RsJ’s and girders

Question 21

Common uses of High carbon steel

Answer 21

Screwdrivers, chisels, tapes and dies

Question 22

Common uses of Aluminium?

Answer 22

Aircraft bodies, high-end car chassis, cans, cooking pans, bike frames

Question 23

Common uses of copper?

Answer 23

Plumbing fittings, hot water tanks, electrical wire

Question 24

Common uses of zinc?

Answer 24

As a galvanised coating in creash barriers, corrugated roofing, intricate die cast products

Question 25

Common uses of tin?

Answer 25

Coatings on food and drinks cans, solders

Question 26

Common uses of brass?

Answer 26

Castings, forgings, taps, wood screws

Question 27

Common uses of stainless steel?

Answer 27

Sinks, cutlery, surgical equipment, homewares

Question 28

Common uses of duralumin?

Answer 28

Aircraft structure and fixings, suspension applications, fuel tanks

Question 29

Most widely used ferrous metal?

Answer 29

Low carbon steel

Question 30

Most widely used non-ferrous metal?

Answer 30

Aluminium