material 110101j

Question 1

1. Two metals mixed are considered a alloy true or false

Answer 1

true

Question 2

Gold , silver, and aluminum are forms of ?

Answer 2

Metallic elements because that are pure form

Question 3

Expanded metal that is turned into a mess appearance looking liking diamonds is

Answer 3

Expanded metal

Question 4

Metal that holes punched into metal is known as ?

Answer 4

Perforated metal

Question 5

Hardware cloth is known as ?

Answer 5

Birdscreen

Question 6

Glass ,cast iron and hard steel are considered ?

Answer 6

Brittle

Question 7

Copper is a good metal to ?

Answer 7

Conduct heat known as conductivity

Question 8

What able to bend over its ability and stretching and still hold its mechanical properties ?

Answer 8

Ductility

Question 9

What the name for a metal to transform back to its original form after its been forced out of shape ?

Answer 9

Elasticity

Question 10

Whats the metal thats able to resist force ?

Answer 10

Hardness

Question 11

Whats its called when metal thats able to withstand rolling without cracking or breaking?

Answer 11

Malleability

Question 12

Steady stress on metal can withstand before it yields is ?

Answer 12

Strength

Question 13

Metal that will not break with force or to shear is ?

Answer 13

Toughness

Question 14

Annealing and natural conditions to outside will do what to metal ?

Answer 14

effect the metal

Question 15

Heat treatment has three categories ?

Answer 15

Annealing , quenching , tempering

Question 16

Metal formed cold is known as ?

Answer 16

Cold work

Question 17

When metal is exposed to oxygen its known to ?

Answer 17

Oxide

Question 18

How can it be galvanic action be prevented between two metals ?

Answer 18

Put a barrier between them or coat it

Question 19

Ferrous is gauged with ?

Answer 19

U.s standard

Question 20

Non ferrous is gauged with ?

Answer 20

American standard wire

Question 21

The most standard gauge of metal in our trade is ?

Answer 21

16 and 28

Question 22

If metal has iron in it ,its known as ?

Answer 22

Ferrous metal

Question 23

Iron is found in it own state true or false ?

Answer 23

True

Question 24

Steel is a alloy composed of iron and carbon true or false ?

Answer 24

True

Question 25

Carbon is a element that acts as a ?

Answer 25

Harding agent

Question 26

Black iron is a mild steel that can be obtained as a ?

Answer 26

Hot rolled or cold rolled

Question 27

Black iron that is greater then 1/8 is called ?

Answer 27

Steel plate

Question 28

When welding metal with zinc it important to ?

Answer 28

Have ventilation to prevent oxide fumes and illness

Question 29

Mild steel with a coating of zinc is called ?

Answer 29

Galvanized iron , satin coated , paint lock

Question 30

When gauging galvanized steel what needs to be considered ?

Answer 30

The zinc that has been added to the metal

Question 31

The zinc that has been added to the metal is

Answer 31

Corrosion resistance and heat resistant

Question 32

Down side to stainless steel is ?

Answer 32

Its harder to work with

Question 33

When working with stainless steel the work area needs to be ?

Answer 33

Free of iron

Question 34

Alumiumin is a ore called ?

Answer 34

Bauxite

Question 35

Automobiles and aerospace , drinking cans are common uses of ?

Answer 35

Aluminum

Question 36

When copper is hardened its known as ?

Answer 36

Cold worked

Question 37

Copper is gauged by ?

Answer 37

Weight per foot

Question 38

Common name used for copper zinc alloys ?

Answer 38

Brass

Question 39

Brasses are highly malleable and resistant to corrosion true or false ?

Answer 39

True

Question 40

Plastics are put into two categories ?

Answer 40

Thermosetting and thermoplastic

Question 41

Plastics are hardens under heat by chemical reaction are called ?

Answer 41

Thermosetting

Question 42

fittings can be moulded and formed and welded by applying pressure is called ?

Answer 42

Thermoplastic

Question 43

Silica and sand are heated to melt into a liquid stat to form ?

Answer 43

Fibrous glass duct

Question 44

Metallic flexible duct is used for ?

Answer 44

Chimney liner

Question 45

What's the disadvantage of flexible duct ?

Answer 45

Causes friction