Module 1 Properties Of Materials

Question 0

Malleability explain?

Answer 0

The ability of a metal to be worked into a shape without breaking in all directions , eg lead

Question 1

Fusibility explain??

Answer 1

Denotes the point at which a metal will melt or fuse with another metal ,mild steel has the highest melting point 1926’c

Question 2

Ductility explain?

Answer 2

The ability of a metal to be STRETCHED without it breaking eg copper

Question 3

Tenacity explain?

Answer 3

Denotes a material ability to RESIST being stretched or pulled apart (stubborn)

Question 4

Tensile strength explain?

Answer 4

Is a measure of tenacity a special machine is used to test various materials

Question 5

Elasticity explain?

Answer 5

Is the ability of a material to return to its original shape Baxter being pulled or pushed out of shape eg rubber

Question 6

Durability explain?

Answer 6

Is the ability of a material to resist wear and tear

Question 7

Define Alloys?

Answer 7

An alloy is a metallic substance made by mixing two or more elements together one of which must be a metal

Question 8

What is an element in alloys?

Answer 8

An element is a substance made up of atoms all of one kind eg zinc copper or aluminium

Question 9

What is made if zinc and copper are mixed?

Answer 9

If the were to be melted together BRASS would be the alloy made

Question 10

An alloy needs at least one metal to make it give an example?

Answer 10

Cast iron which is made by mixing iron and carbon

Question 11

Chromium?

Answer 11

Increases its corrosion resistance

Question 12

Magnesium ?

Answer 12

Increases its toughness

Question 13

Silicon ?

Answer 13

Destroys its magnetic properties

Question 14

Vanadium?

Answer 14

Makes it less brittle if dropped

Question 15

Copper?

Answer 15

Protects fro corrosion eg coins

Question 16

Give examples of pure metal elements?

Answer 16

Copper iron lead zinc aluminium tin

Question 17

Brass name its components and its use?

Answer 17

Copper and zinc used for pipe fittings

Question 18

Bronze name its components and used for ?

Answer 18

Copper and tin used for underground pipes and fitting

Question 19

Cast iron name its components and used for?

Answer 19

Carbon and iron used for pipes and boilers

Question 20

Mild steel name its components and used for?

Answer 20

Carbon and iron used in popes and fitting

Question 21

Soft solder name its components and used for?

Answer 21

Tim lead used for blowpipe and soldering

Question 22

Hard solder name its components and uses

Answer 22

Silver copper used in cuprotectic joints

Question 23

Lead free solder name its components And used for ?

Answer 23

Silver and tin used for blowpipe soldering

Question 24

Annealing explain it?

Answer 24

This is treatment of a metal to improve its ductility or make it softer

Question 25

When would u use annealing?

Answer 25

On copper Pipework prior to spring bending heat is applied

Question 26

What will happen to copper after its is worked??

Answer 26

Annealed copper will harden after it is worked upon and will often need re annealing

Question 27

Work hardening explain it?

Answer 27

This happens to a metal that has been bossed or drawn into a new shape, it can make the metal brittle or hard to work with

Question 28

Tempering explain?

Answer 28

This is a process of strengthening a metal or making it harder done by heating to very high temp then cooling rapid is water or oil