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CWB Level 1 Metallurgy and Material Specification Exam with verified detailed solutions

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CWB Level 1 Metallurgy and Material Specification Exam with verified detailed solutions

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CWB Level 1 Metallurgy and Material Specification ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Exam with verified detailed solutions ||\\//|| ||\\//|| ||\\//|| ||\\//||




Select the non-ferrous metal from the following: (Multiple choice)
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




Question 1 options: ||\\//|| ||\\//||




A) Wrought iron.
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B) Copper.
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C) Carbon steel.
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D) Stainless steel. - correct answer✔✔B) Copper.
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Which of the following materials is a ferrous alloy? (Multiple choice)
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Question 2 options: ||\\//|| ||\\//||




A) Aluminum.
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B) Nickel.
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C) Chromium.
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D) Stainless steel. - correct answer✔✔D) Stainless steel.
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Alloys are mixtures of a metal with: (Multiple choice)
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Question 3 options:A) Only other metals.B) Other non-metals.C) Both metals and non-
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metals.D) Iron. - correct answer✔✔C) 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)
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Question 4 options:A) Cementite/pearlite.B) Fine ferrite/pearlite.C) Coarse
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ferrite/pearlite.D) Fine austenite/pearlite. - correct answer✔✔B) 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. - correct answer✔✔C) 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. - correct answer✔✔A) The austenite region. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




When thermal stress relief is completed, nondestructive testing is often postponed for 48
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hours to ensure that no delayed post-stress relief cracking occurred: (True/False) - correct
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




answer✔✔false



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. - correct
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




answer✔✔C) 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. - correct answer✔✔B) Alloy steels ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




The grouping of steels referred to as high strength low alloy steels (HLSA) typically exhibit
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




the following attributes: (Multiple choice)
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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. - correct answer✔✔C) 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% - ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




correct answer✔✔check answer ||\\//|| ||\\//||




Adding silicon to low-carbon steel decreases the steel's magnetic properties. (True/False) -
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




correct answer✔✔false ||\\//||




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. - correct answer✔✔A) ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




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.
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(True/False) - correct answer✔✔true. ||\\//|| ||\\//|| ||\\//||




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
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corrode the surface in a controlled fashion.D) A chemical treatment to corrode the surface
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




in an uncontrolled fashion. - correct answer✔✔C) 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. - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




answer✔✔A) 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. - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




answer✔✔C) 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. - correct answer✔✔B) 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 - correct answer✔✔B) 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 - correct answer✔✔C) 7 ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




P groupings in ASME Section IX are used to group steels for procedure qualification testing.
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||




(True/False) - correct answer✔✔True
||\\//|| ||\\//|| ||\\//|| ||\\//||

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