CWB Welding Inspector Level 2 Exam (Latest 2025 Update) Questions and
Verified Answers | All Modules Covered | 100% Correct | Grade A+
What actions might reduce the risk of carbon contamination in welding stainless
steels - ANSWER-"1) Use aluminum oxide grinding wheels reserved for stainless
steel
2) Carefully clean off grease and dirt before welding - ANSWER-
3) Use stainless steel cleaning brushes " - ANSWER-
If a buttering technique is used to weld 304 stainless to mild steel what should be
used for the butter layer - ANSWER-E309
The presence of nickel stabilizes which crystal structure - ANSWER-FCC
Stainless steels derive their stainless property from the following alloying
element - ANSWER-Chromium
The four main types of stainless steels used in welded fabrications are - ANSWER-
Ferritic, austenitic, martensitic, and duplex
,A stainless steel is said to be passivated when - ANSWER-Stable adherent oxide
layer protects the surface
What of the following is most likely to cause sensitization when welding austenitic
stainless steels - ANSWER-Using higher carbon base and filler metal
What is the primary reason to produce a small percentage of ferrite when welding
austenitic stainless steel - ANSWER-A avoid weld metal solidfication cracking
To reduce the likelihood of sensitization, which type of stainless steel was
specifically developed to resist stress corrosion cracking - ANSWER-Duplex
One of the major problems when welding ferritic stainless steels is - ANSWER-The
grain growth that occurs
Filler metal selection when welding a carbon steel to an austenitic stainless steel
is based on the - ANSWER-"1) Chemical compositions of the base metals
2) Intended service conditions - ANSWER-
3) Structure produced in the weld deposit" - ANSWER-
,When welding duplex stainless steels, the filler metal typically matches the base
metal composition except for which element - ANSWER-Nickel
A straight chromium steel < 0.1% carbon and 18% chromium when heated to 1000
C will - ANSWER-Remain as ferrite
Stabilized austenitic stainless steels such as 347 do not become sensitized in
welding because - ANSWER-They contain elements such as niobium (columbium)
that tie up the carbon
If a plate of austensitic stainless steel is cold formed it experiences - ANSWER-A
greater spring-back than a comparable plate of carbon steel
Weld decay is caused by - ANSWER-Chromium deplation at the grain boundaries
due to carbide precipition
There is an increased risk of weld metal fissuring when - ANSWER-The primary
solid to form on solidification is austensite
on the delong diagram the amount of the ferrite is indicated by - ANSWER-The
ferrite number
, What is likely to result in cracking due to martensite formation - ANSWER-E481018
(Mild Steel) weld metal deposited over E308 weld metal
What is the processes would not be recommended for welding type 304 stainless
steel - ANSWER-GMAW with CO2 shielding
An unstabilized stainless steel with 0.15% carbon has been welded. What heat
treatment could be applied to prevent weld decay in service - ANSWER-Solution
treatment at 1100 C followed by a rapid cool
A consumable electrode is: - ANSWER-AN electrode which melts and provides
metal to fill the joint
The weld heat affected zone is: - ANSWER-the portion of the base metal adjacent
to the weld metal whose properties have been changed due to the heat of welding
When an arc is formed between two electrodes - ANSWER-electricity flows from
negative cathode to positive anode
The magnetic pinch force helps in the process of the detaching the molten metal
drops from the electrode tip. The magnetic force - ANSWER-increases as the
square of the current causing smaller and smaller droplets to be detached
Verified Answers | All Modules Covered | 100% Correct | Grade A+
What actions might reduce the risk of carbon contamination in welding stainless
steels - ANSWER-"1) Use aluminum oxide grinding wheels reserved for stainless
steel
2) Carefully clean off grease and dirt before welding - ANSWER-
3) Use stainless steel cleaning brushes " - ANSWER-
If a buttering technique is used to weld 304 stainless to mild steel what should be
used for the butter layer - ANSWER-E309
The presence of nickel stabilizes which crystal structure - ANSWER-FCC
Stainless steels derive their stainless property from the following alloying
element - ANSWER-Chromium
The four main types of stainless steels used in welded fabrications are - ANSWER-
Ferritic, austenitic, martensitic, and duplex
,A stainless steel is said to be passivated when - ANSWER-Stable adherent oxide
layer protects the surface
What of the following is most likely to cause sensitization when welding austenitic
stainless steels - ANSWER-Using higher carbon base and filler metal
What is the primary reason to produce a small percentage of ferrite when welding
austenitic stainless steel - ANSWER-A avoid weld metal solidfication cracking
To reduce the likelihood of sensitization, which type of stainless steel was
specifically developed to resist stress corrosion cracking - ANSWER-Duplex
One of the major problems when welding ferritic stainless steels is - ANSWER-The
grain growth that occurs
Filler metal selection when welding a carbon steel to an austenitic stainless steel
is based on the - ANSWER-"1) Chemical compositions of the base metals
2) Intended service conditions - ANSWER-
3) Structure produced in the weld deposit" - ANSWER-
,When welding duplex stainless steels, the filler metal typically matches the base
metal composition except for which element - ANSWER-Nickel
A straight chromium steel < 0.1% carbon and 18% chromium when heated to 1000
C will - ANSWER-Remain as ferrite
Stabilized austenitic stainless steels such as 347 do not become sensitized in
welding because - ANSWER-They contain elements such as niobium (columbium)
that tie up the carbon
If a plate of austensitic stainless steel is cold formed it experiences - ANSWER-A
greater spring-back than a comparable plate of carbon steel
Weld decay is caused by - ANSWER-Chromium deplation at the grain boundaries
due to carbide precipition
There is an increased risk of weld metal fissuring when - ANSWER-The primary
solid to form on solidification is austensite
on the delong diagram the amount of the ferrite is indicated by - ANSWER-The
ferrite number
, What is likely to result in cracking due to martensite formation - ANSWER-E481018
(Mild Steel) weld metal deposited over E308 weld metal
What is the processes would not be recommended for welding type 304 stainless
steel - ANSWER-GMAW with CO2 shielding
An unstabilized stainless steel with 0.15% carbon has been welded. What heat
treatment could be applied to prevent weld decay in service - ANSWER-Solution
treatment at 1100 C followed by a rapid cool
A consumable electrode is: - ANSWER-AN electrode which melts and provides
metal to fill the joint
The weld heat affected zone is: - ANSWER-the portion of the base metal adjacent
to the weld metal whose properties have been changed due to the heat of welding
When an arc is formed between two electrodes - ANSWER-electricity flows from
negative cathode to positive anode
The magnetic pinch force helps in the process of the detaching the molten metal
drops from the electrode tip. The magnetic force - ANSWER-increases as the
square of the current causing smaller and smaller droplets to be detached
