1.8 Categorising Properties Of Ferrous/nonferrous Metals

Question 1

What are 3 working properties of mild steel?

Answer 1

-Tough
- ductile
-Malleable
-magnetic
- high tensile strength
- easily joined
- poor corrosion resistance

Question 2

3 applications of mild steel

Answer 2

-Screws
-Nails
-Bolts
-Girders
- car body panels

Question 3

What is a ferrous metal?

Answer 3

A metal that contains iron (fernite)

Question 4

Are most ferrous metals magnetic have magnetic properties?

Answer 4

Yes

Question 5

Are non ferrous metals vulnerable to rust?

Answer 5

No, ferrous are though

Question 6

Which ferrous metals are exempt from being vulnerable to rust when exposed to moisture

Answer 6

Stainless steel & wrought iron

Question 7

Which are more malleable? Nonferrous or ferrous metals?

Answer 7

Nonferrous

Question 8

What is an alloy?

Answer 8

Mixture of two or more metals or elements with improved characteristics

Question 9

3 working properties of cast iron?

Answer 9

• Hard skin
  -Brittle
• soft core
• good in compression
  -Self lubricating
  -Magnetic

Question 10

3 applications of cast iron

Answer 10

• Machine parts
• vices
• break discs
• man hole covers

Question 11

Name 3 ferrous metals

Answer 11

• mild steel
• stainless steel
• cast iron

Question 12

Name 3 non-ferrous metals

Answer 12

• Aluminium
• copper
  -Brass

Question 13

Name 3 properties of aluminium and its colour

Answer 13

Greyish white; corrosion resistant, -
-malleable,
-ductile,
-easily machined,
-good heat/ electrical conductors.
- excellent strength to weight ratio

Question 14

Name 4 uses of aluminium

Answer 14

• Aircraft
  -Foil
• window frames
• engine parts
• drink cans

Question 15

Name 3 working properties of copper and its colour

Answer 15

Reddy brown;
- corrosion resistant
- malleable
- ductile
- tough
-Easily machined
- good heat/electrical conductor
- good hot or cold working
- polishes well

Question 16

Name 3 applications of copper.

Answer 16

• Electrical wire
• gas and water pipes
  -Printed circuits
  -Roofing

Question 17

Name 3 working properties of brass and its colour

Answer 17

Yellow
- corrosion resistant
- easily machined
- good heat / electrical conductor
- polishes well
Harder than copper

Question 18

Name 3 uses of brass.

Answer 18

• Plumbing fittings
• door fittings
• locks
• musical instruments

Question 19

Define ductility

Answer 19

Ability of material to deform by bending, twisting or stretching

Question 20

How does metal benefit from ductility

Answer 20

Ductility in metals increases with temperature

Question 21

Define malleability

Answer 21

Ability of a material to be permanently deformed in all directions without fracture,

Question 22

How does temperature affect malleability

Answer 22

Malleability increases with temperature

Question 23

Define hardness

Answer 23

Ability of a material to resist deformation, indentation or penetration

Question 24

How do hard materials benefit from hardness

Answer 24

Had materials can resist abrasion, drilling, impact, scratching, and wear and tear