CWB Level 1 Metallurgy and Material
Specification QUESTIONS &
ANSWERS(RATED A+)
Select the non-ferrous metal from the following: (Multiple choice)
Question 1 options:
A) Wrought iron.
B) Copper.
C) Carbon steel.
D) Stainless steel. - ANSWERB) Copper.
Which of the following materials is a ferrous alloy? (Multiple choice)
Question 2 options:
A) Aluminum.
B) Nickel.
C) Chromium.
D) Stainless steel. - ANSWERD) Stainless steel.
Alloys are mixtures of a metal with: (Multiple choice)
Question 3 options:A) Only other metals.B) Other non-metals.C) Both metals and
non-metals.D) Iron. - ANSWERC) Both metals and non-metals.
For normalizing, the steel is heated slightly higher than annealing, followed by air
cooling. This type of cooling process produces a grain structure of: (Multiple choice)
Question 4 options:A) Cementite/pearlite.B) Fine ferrite/pearlite.C) Coarse
ferrite/pearlite.D) Fine austenite/pearlite. - ANSWERB) Fine ferrite/pearlite.
What is the result of hot-shortness in a metal? (Multiple choice)
Question 5 options:A) Loss of impact strength.B) Increased toughness.C) Loss of
ductility.D) Increased malleability. - ANSWERC) Loss of ductility.
Hot-rolling is carried out in what region? (Multiple choice)
Question 6 options:A) The austenite region.B) The pearlite regionC) The cementite
region.D) The ferrite region. - ANSWERA) The austenite region.
When thermal stress relief is completed, nondestructive testing is often postponed
for 48 hours to ensure that no delayed post-stress relief cracking occurred:
(True/False) - ANSWERfalse
When thermal stress relief is completed, nondestructive testing is often postponed
for 24 hours to ensure that no delayed post-stress relief cracking occurred
What are the three main components when charging a blast furnace? (Multiple
choice)
,Question 9 options:A) Iron ore, nickel pellets, and limestone.B) Iron ore, manganese,
and cokeC) Iron ore, limestone, and coke.D) Iron ore, nickel pellets, and coke. -
ANSWERC) Iron ore, limestone, and coke.
The three major steel groups are carbon steels, low-alloy steels and: (Multiple
choice)
Question 10 options:A) Manganese steels.B) Alloy steelsC) Carbon-molybdenum
steels.D) Carbon-nitrate steels. - ANSWERB) Alloy steels
The grouping of steels referred to as high strength low alloy steels (HLSA) typically
exhibit the following attributes: (Multiple choice)
Question 11 options:A) A high carbon content, high strength, and a large grain
size.B) A high carbon content, high strength, and a fine grain size.C) A low carbon
content, high strength, and a fine grain size.D) A low carbon content, poor
toughness, and a large grain size. - ANSWERC) A low carbon content, high strength,
and a fine grain size.
The carbon content (%C) for structural steel plates falls in the range of: (Multiple
choice)
Question 12 options:A) 0.05% - 0.10%B) 0.15% - 0.30%C) 0.5% - 0.80%D) 1.70% -
2.50% - ANSWERcheck answer
Adding silicon to low-carbon steel decreases the steel's magnetic properties.
(True/False) - ANSWERfalse
it ends up having a high magnetic permeability
Which element contained in HSLA steels will improve resistance to atmospheric
corrosion? (Multiple choice)
Question 14 options:A) Copper.B) BoronC) Oxygen.D) Carbon. - ANSWERA)
Copper.
Austenitic stainless steel is a mixture of chromium and enough nickel to remain
austenitic over the whole temperature range and therefore does not transform on
heating or cooling. (True/False) - ANSWERtrue.
When working with stainless steels, what does the term pickling refer to? (Multiple
choice)
Question 16 options:A) A chemical treatment to remove surface iron contamination
only.B) A chemical treatment to remove the mill scale prior to weldingC) A chemical
treatment to corrode the surface in a controlled fashion.D) A chemical treatment to
corrode the surface in an uncontrolled fashion. - ANSWERC) A chemical treatment
to corrode the surface in a controlled fashion.
What series of stainless steel is commonly used in washing machines, cutlery, the
automotive industry, and the food and beverage industry? (Multiple choice)
Question 17 options:A) 200 series.B) 300 series.C) 400 series.D) 316 series. -
ANSWERA) 200 series.
, What series of stainless steel is commonly used in agriculture equipment, turbines,
petrochemicals, fasteners, and heat exchangers? (Multiple choice)
Question 18 options:A) 200 series.B) 300 seriesC) 400 seriesD) 316 series. -
ANSWERC) 400 series
The carbon content of a specific steel grade, e.g. 4340: (Multiple choice)
Question 19 options:A) depends only on the nickel content.B) depends only on the
type of furnace in which the steel is made.C) will not be uniform, but will fall within a
specified range.D) can be whatever the client requires. - ANSWERB) depends only
on the type of furnace in which the steel is made.
double check this answer
What designates that AISI 4340 refers to nickel-chromium-molybdenum steel?
(Multiple choice)
Question 20 options:A) The first digitB) The first two digitsC) The first three digitsD)
The last digit - ANSWERB) The first two digits
How many types of steel are covered by CSA G40.21? (Multiple choice)
Question 21 options:A) 5B) 6C) 7D) 8 - ANSWERC) 7
P groupings in ASME Section IX are used to group steels for procedure qualification
testing. (True/False) - ANSWERTrue
If more than 2% carbon is added to iron, the resulting material: (Multiple choice)
Question 23 options:A) can no longer be forged.B) is called cast iron.C) will contain
cementite and pearlite.D) will contain martensite and pearlite. - ANSWERB) is called
cast iron.
Metals have a crystalline structure in which the atoms are arranged in an irregular
pattern. (True/False) - ANSWERfalse
At temperatures above 910 °C (1670 °F), iron exists in which crystalline structure?
(Multiple choice)
Question 25 options:A) FCCB) BCCC) HCPD) PCC - ANSWERA) FCC
Ferrite, austenite, and cementite are know as: (Multiple choice)
Question 26 options:A) ParticlesB) ElementsC) PhasesD) Atoms - ANSWERC)
Phases
If more than 0.8% carbon is added to iron, the resulting material: (Multiple choice)
Question 27 options:A) can no longer be forged.B) is called cast iron.C) will contain
cementite and pearlite.D) will contain martensite and pearlite. - ANSWERcheck this
answer
From the materials listed below, choose the metal with the highest thermal
conductivity. (Multiple choice)
Question 28 options:A) Silver.B) Gold.C) Aluminum.D) Copper. - ANSWERA) Silver.
