CWB LEVEL 2 ALL LATEST
MODULES
A stainless steel is said to be passivated when:
A) An oxide layer is not present
B) Carbides have precipitated on the grain boundaries
C) A stable adherent oxide layer protects the surface
D) A solution heat treatment was completed - ANSWERS-C) A stable
adherent oxide layer protects the surface
Which of the following is most likely to cause sensitization when
welding austenitic stainless steels?
A) Using low carbon base and filler metal
B) Using stabilized stainless steels
C) Using higher carbon steel base and filler metal
D) Completing a solution head treatment after welding - ANSWERS-C)
Using higher carbon steel base and filler metal
What is the primary reason to produce a small percentage of ferrite when
welding austenitic stainless steel?
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1
, CWB LEVEL 2 ALL LATEST
MODULES
A) To avoid weld metal solidification cracking
B) To improve the low temperature properties
C) To improve the high temperature properties - ANSWERS-A) To
avoid weld metal solidification cracking
To reduce te likelihood of sensitization, which type of stainless steel was
specifically developed to resist stress corrosion cracking?
A) Ferritic
B) Martensitic
C) Austenitic
D) Duplex - ANSWERS-D) Duplex
One of the major problems when welding ferritic stainless steels is:
A) The formation of martensite
B) The grain growth that occurs
C) A sensitized structure
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2
, CWB LEVEL 2 ALL LATEST
MODULES
D) Sigma phase formation - ANSWERS-B) The grain growth that
occurs
When welding duplex stainless steels, the filler metal typically matches
the base metal composition except for which element?
A) Carbon
B) Iron
C) Chromium
D) Nickel - ANSWERS-D) Nickel
The ability of a liquid to penetrate a narrow opening depends on the
phenomenon of:
A) Fluorescence
B) Capillary action
C) density
D) Viscosity
E) Lipophilic - ANSWERS-B) Capillary action
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PAGE
3
, CWB LEVEL 2 ALL LATEST
MODULES
When using a post-emulsifiable penetrant, the excess penetrant is
removed
A) Immediately after the dwell time by water washing
B) Immediately after the dwell time by using a solvent
C) After brushing on an emulsifier then water washing
D) After dipping or spraying on an emulsifier then water washing
E) After brushing on an emulsifier then using a solvent - ANSWERS-D)
After dipping or spraying on an emulsifier then water washing
What is the normal operating temperature for a liquid penetrant
according to ASTM E-165?
A) 21°C to 24°C (70°F to 75°F)
B) Any temperature
C) 12°C to 52°C (60°F to 125°F)
D) 60°C to 125°C (140°F to 257°F)
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PAGE
4
MODULES
A stainless steel is said to be passivated when:
A) An oxide layer is not present
B) Carbides have precipitated on the grain boundaries
C) A stable adherent oxide layer protects the surface
D) A solution heat treatment was completed - ANSWERS-C) A stable
adherent oxide layer protects the surface
Which of the following is most likely to cause sensitization when
welding austenitic stainless steels?
A) Using low carbon base and filler metal
B) Using stabilized stainless steels
C) Using higher carbon steel base and filler metal
D) Completing a solution head treatment after welding - ANSWERS-C)
Using higher carbon steel base and filler metal
What is the primary reason to produce a small percentage of ferrite when
welding austenitic stainless steel?
END OF
PAGE
1
, CWB LEVEL 2 ALL LATEST
MODULES
A) To avoid weld metal solidification cracking
B) To improve the low temperature properties
C) To improve the high temperature properties - ANSWERS-A) To
avoid weld metal solidification cracking
To reduce te likelihood of sensitization, which type of stainless steel was
specifically developed to resist stress corrosion cracking?
A) Ferritic
B) Martensitic
C) Austenitic
D) Duplex - ANSWERS-D) Duplex
One of the major problems when welding ferritic stainless steels is:
A) The formation of martensite
B) The grain growth that occurs
C) A sensitized structure
END OF
PAGE
2
, CWB LEVEL 2 ALL LATEST
MODULES
D) Sigma phase formation - ANSWERS-B) The grain growth that
occurs
When welding duplex stainless steels, the filler metal typically matches
the base metal composition except for which element?
A) Carbon
B) Iron
C) Chromium
D) Nickel - ANSWERS-D) Nickel
The ability of a liquid to penetrate a narrow opening depends on the
phenomenon of:
A) Fluorescence
B) Capillary action
C) density
D) Viscosity
E) Lipophilic - ANSWERS-B) Capillary action
END OF
PAGE
3
, CWB LEVEL 2 ALL LATEST
MODULES
When using a post-emulsifiable penetrant, the excess penetrant is
removed
A) Immediately after the dwell time by water washing
B) Immediately after the dwell time by using a solvent
C) After brushing on an emulsifier then water washing
D) After dipping or spraying on an emulsifier then water washing
E) After brushing on an emulsifier then using a solvent - ANSWERS-D)
After dipping or spraying on an emulsifier then water washing
What is the normal operating temperature for a liquid penetrant
according to ASTM E-165?
A) 21°C to 24°C (70°F to 75°F)
B) Any temperature
C) 12°C to 52°C (60°F to 125°F)
D) 60°C to 125°C (140°F to 257°F)
END OF
PAGE
4
