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First Year Millwright 2018 > Metallurgy > Flashcards

Flashcards in Metallurgy Deck (47)
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1

Metals have iron as the major ingredients and are usually magnetic

Ferrous metals

2

Metals that do not have iron in large enough amount to have any major influence on the properties of metals

Non-ferrous metals

3

What is the most practical method of identifying a metal?

by visual appearance, texture and color

4

What are the most important properties to consider for metals?

*hardness
*ductility
*toughness
*tensile strength
*machinability

5

The ability of a metal to resist penetration and plastic deformation?

hardness

6

The ability of a metal to deformed permanently without breaking?

ductility

7

The ability of a metal to withstand shock and impact without breaking or shattering is?

toughness

8

The ability of a metal to withstand pull without breaking is?

tensile strength

9

The ease at which you can cut and shape a metal is known as?

machinability

10

The most common metal material is?

carbon steel

11

What is the most common material used in the industry?

aluminium

12

If a piece of a metal has a smooth outer surface, what might you conclude about the object?

it has been formed

13

If an object is irregularly shaped, what might you conclude the object?

it is a casting

14

What are the different ways of identifying metals?

*color
*visual appearance
*weight
*texture
*shape

15

Given two identical pieces of metals, zinc dye cast and aluminium, what would be the simplest way to identify them?

by their weight

16

How can you distinguish between hot rolled and cold rolled steel?

*Hot rolled steel has a black mill scale or a heat scale surface

17

List all carbon steel sub-groups

*low carbon
*medium carbon
*high carbon

18

What are the two (2) main divisions of metals?

*Ferrous Metals
*Non-Ferrous Metals

19

Low carbon steel has

.02 - .30 % carbon

20

Medium carbon steel has

.30 - .60 % carbon

21

High carbon steel has

anything over .60%

22

What is considered to be cast iron?

Anything over 1.7%

23

The three special types of allow steel are?

*high strength low allow steel (HSLA)
*quench and temper structural steel
*maragine steel

24

What are the two types of high speed steel?

*tungsten (Type-T)
*molybdenum (Type-M)

25

What are the three types of stainless steel?

*austenitic stainless steel
*ferritic stainless steel
*martensitic stainless steel

26

The two principal alloy for copper are?

*brass
*bronze

27

A mixture of copper and zinc makes

Brass

28

A combination of copper and tin is?

Bronze

29

The principal types of bronze are?

*phosphor-bronze
*silicon line bronze
*aluminium line bronze
*beryllium bronze

30

The structure of soft steel is called?

Pearlite