Classification Of Materials

Question 1

What are 6 1/2 classifications

Question 2

What does ferrous contain? Example? 2

Answer 2

Iron and carbon
Low carbon steel, cast iron

Question 3

Give a disadvantage of ferrous materials?

Answer 3

Rusts

Question 4

Advantages of non ferrous materials? 2
Examples? 2

Answer 4

Doesn’t rust, magnetic
Aluminium, copper

Question 5

What is alloy?
Example? 2

Answer 5

Metals composed of two or more elements using their best quality’s.
Stainless steel, bronze.

Question 6

What trees are hardwood and softwood?

Answer 6

Hardwood= deciduous tress( loose leaves in the winter)
Softwood= coniferous trees

Question 7

Example of hardwood?
Disadvantages? 2

Answer 7

Oak, ash
Grows slower, expensive

Question 8

Examples of soft wood? 2
Advantages? 2

Answer 8

Pine, cedar
Grows faster, inexpensive

Question 9

Examples of manufactured boards? 3
Advantages? 1

Answer 9

Plywood, chipboard, MDF.
Are made in a lager size.

Question 10

What are thermoplastics?
Advantages? 1
Examples?

Answer 10

Plastics that can be remoulded and reshaped.
Recyclable.
HIPS, PET, PP, PVC

Question 11

Use of HIP
Use of PET
Use of PP
Use of PVC

Answer 11

Yogurt containers
Synthetic clothing, drinking bottles
Reusable plastic water bottles
Pipes, wires/ cables

Question 12

Meaning of thermosetting plastics?
Examples?

Answer 12

Can’t be reheated therefore can’t be recycled.
Bakelite, epoxy resin

Question 13

Use of Bakelite- WI
Use of Epoxy resin- A
What is one use of UF- p

Answer 13

wire insulation
Adhesion
Plug sockets

Question 14

What is advantage of Aluminium? 4+ -Flam
Aluminium uses? 2

Answer 14

• lightweight
• Malleable
  -Non ferrous so it will not rust
• Recyclable
• Aesthetically pleasing
• food safe

-Car bodies
-Cans

Question 15

Use of GRP? B

What can CFRP be used for? Bf
What is the disadvantage?

What process can be used to make this product? L

Answer 15

Boat hulls

Bike frame
Harder to recycle

Lay up manufacturing

Question 16

How to test for tensile strength? Clamp.. end.. l

When testing for tensile strength, what other strength are we testing? ( underside of material) c

Answer 16

Clamp the material at one end and put load on another end

Compressive strength

Question 17

What is toughness of material? How much 👋🏽
How to test for toughness? Force.. 🔨

What is a sign for tough materials and not tough materials? Break

Answer 17

-how much impact force the material can absorb
-Plant material and hits with the same force using a hammer.

-tough materials will not break or bend however brittle materials will break or bend.

Question 18

How to test for hardness?
What is hardness? SI,A

Answer 18

Using a dot punch and hammer
- how well a material can resist abrasive and resist surface indentation.

Question 19

How to test for malleability and ductility?

How do I tell if a material is not ductile? C o

How do I tell if a material lacks malleability?C i

Answer 19

-Clamp material down and bend material
-Cracks on the surface OUTSIDE when bending
-cracks on the surface INSIDE when bending 

Question 20

When testing for corrosion, where should the material be placed? To test what?

Answer 20

Outside to test for wether effects?

Question 21

When testing for electrical and thermal conductivity, what is it important to measure?probe, thermometer

Answer 21

The distance between the electrical probes on a material

The distance between Bunsen burner and thermometer.

Question 22

Use of High Speed steel?
What does it contain as an alloy? Chr
How can it be improved? Coa

Answer 22

• Metal drill bit
  -Chromium
  -coated to improve performance