Metals

Question 1

How can metal products be made to make the metal recyclable?

Answer 1

By using non-permanent fittings and by labeling.

Question 2

Manufacturers need to be ______ about how much metal they use.

Answer 2

Careful and socially responsible.

Question 3

How is metal extracted from ore?

Answer 3

The ore is smelted.

Question 4

How is metal turned into its stock form?

Answer 4

After it has been extracted it will be put through a primary process where it is extruded into stock form.

Question 5

What is cast iron?

Answer 5

• Composed of iron and 3% carbon

- Ferrous metal

Question 6

What are some properties of cast iron?

Answer 6

• Brittle

- Strong against compression

Question 7

What are some uses of cast iron?

Answer 7

• Brake disks
• Fire places
• Some machine parts

Question 8

What is Mild steel?

Answer 8

-Composed of iron and 0.15-0.25% of carbon

Question 9

What are some properties of mild steel?

Answer 9

• Malleable
• Tough
• Ductile
• Good in tension
• Corrodes easily
• melts at 1600 degrees

Question 10

What are some uses of mild steel?

Answer 10

• Car body panels
• Structural beams
• nuts and bolts

Question 11

What is High carbon steel?

Answer 11

-Iron and 0.7-1.5% of carbon

Question 12

What are some properties of high carbon steel?

Answer 12

• Very hard
• difficult to cut
• not very malleable

Question 13

What are some uses of high carbon steel?

Answer 13

• Hammers
• Chisels
• Screw drivers

Question 14

What is the most common non-ferrous metal?

Answer 14

Aluminium

Question 15

What is Aluminium?

Answer 15

-A pure metal

Question 16

What are some properties of aluminium?

Answer 16

• Malleable
• Soft
• Ductile
• Corrosion resistant
• Difficult to join
• Melts at 600 degrees

Question 17

What are some uses of aluminum?

Answer 17

• Cans
• Foil
• Window frames

Question 18

What are some properties of zinc?

Answer 18

-Melts at 420 degrees

Question 19

What are some uses of zinc?

Answer 19

• Corrosion proof coatings for mild steel (galvanized steel)

- Die-casting alloys

Question 20

What are some properties of copper?

Answer 20

• Melts at 1083 degrees
• Malleable
• Good heat and electrical conductor
• Corrosion resistant
• Turns green as it oxidises

Question 21

What are some uses of copper?

Answer 21

• Pipes
• Wires
• Central heating cylinders

Question 22

What are some properties of Tin?

Answer 22

• Melts at 230 degrees
• Ductile
• Extremely resistant to corrosion

Question 23

What are some uses of tin?

Answer 23

• Coatings for cans

- Alloyed to make solder

Question 24

What is brass made of?

Answer 24

60% copper and 40% zinc

Question 25

What are some properties of brass?

Answer 25

- Corrosion resistant - Polishes well - Melts at 950-1000 degrees

Question 26

What are some uses of brass?

Answer 26

- Ornaments - Plumbing fittings - Furniture hardware (door handles)

Question 27

What is stainless steel made of?

Answer 27

Carbon steel with 18% chromium, 8% nickel and 8% magnesium.

Question 28

What are some properties of stainless steel?

Answer 28

- Melts at 1400 degrees - Resistant to wear and tear - Durable - Tough - Hard

Question 29

What are some uses of stainless steel?

Answer 29

- Kitchen utensils - sinks - surgical intruments

Question 30

What is High speed steel made of?

Answer 30

Medium carbon steel, tungsten, chromium and varadium.

Question 31

What are some properties of high speed steel?

Answer 31

- Very hard - Melts at 1400 degrees - Brittle - Extremely durable

Question 32

What are some uses of high speed steel?

Answer 32

- Drill bits | - Cutting tools

Question 33

What is pewter made of?

Answer 33

80% of tin and 20% of lead (not anymore)

Question 34

What are some properties of pewter?

Answer 34

- Malleable - Melts at 230 degrees - Easily cast - Polishes well

Question 35

What are some uses of pewter?

Answer 35

- Jewelry - Decorative work - Tankards