1|Page
CWB WELDING INSPECTOR LEVEL 3 EXAM NEWEST ACTUAL
EXAM COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BEST
NEWEST VERSION!!!
How does the letter "H" specification (1st digit) of work
hardening/ tempering applies to the non-heat treatable alloys ?
- ANSWER-H1 - The material has been work-hardened
H2 - The material has been work-hardened and partially
annealed
H3 - The material has been work-hardened and Stabilized
How does the 2nd digit applies to the non-heat treatable alloys
? - ANSWER-> 0-8
> denotes the degree of work hardening.
8 - tempers having a UTS eqv to that achieved by a cold
reduction of approx 75% of the metal from its softest stage.
0 is Fully annealed - the softest temper
F - As fabricated
True / False
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Materials having the F temper should not be used for structural
welding - ANSWER-True
What is the annealing temp for 1XXX & 5XXX series ? -
ANSWER-345 C
What are the thermal processes which increase the strength of
heat-treatable alloys? - ANSWER-Solution heat treatment and
aging
What is the aging temp and solution treatment emp for 2024 ? -
ANSWER-aging temp = 160 C
solution treatment temp = 500 C
What is the aging temp and solution treatment emp for 6061 ? -
ANSWER-aging temp = 175 C
solution treatment temp = 530 C
What is the aging temp and solution treatment emp for 6063 ? -
ANSWER-aging temp = 175 C
solution treatment temp = 520 C
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What is the annealing temp for 2024,6061 and 6063 ? -
ANSWER-415 C
What is the annealing temp for 7005 ? - ANSWER-345 C- 400 C
How is Solution heat-treatment done for heat treatable Al
alloys? - ANSWER-by heating the alloy to a temp below the
melting point for a specific period of time and rapidly cooling
from this temp.
Eg -For AA-6061, the solution heat treatment temp is 530 C
How is aging done for heat-treatable Al alloys? - ANSWER-
relatively low temp heat treatment that results in additional
hardening of the solution heat-treated material.
Eg - For AA6061 it is 170C
The aging process strengthens these alloys by the precipitation
of constituents that are too fine to observe with an optical
microscope.
What is the pre requisite for aging? - ANSWER-alloying
constituents are in a solid solution as a result of rapid cooling
from the solution heat treatment temp.
, 4|Page
What is over-aging? - ANSWER-The precipitated constituents
have a stress field around them to accommodate the
precipitates in the solid phase. This accommodation of a solid
particle in a solid matrix accounts for the strengthening by
aging.
If aging is conducted for an excessive amount of time, or at an
excessive temperature then the precipitates no longer have the
stress field about them and there is a loss of strength. that can
range from little to a great deal. This process is called over-aging
What are naturally aged alloys? - ANSWER-Heat treatable alloys
,such as alloy AA-7005, age at the room temp. These are called
naturally aged alloys.
Does age strengthening of AA-7004 & AA-7005 require rapid
cooling/water quenching to retain constituents in the solid
solution? - ANSWER-No
True / False?
CWB WELDING INSPECTOR LEVEL 3 EXAM NEWEST ACTUAL
EXAM COMPLETE 200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BEST
NEWEST VERSION!!!
How does the letter "H" specification (1st digit) of work
hardening/ tempering applies to the non-heat treatable alloys ?
- ANSWER-H1 - The material has been work-hardened
H2 - The material has been work-hardened and partially
annealed
H3 - The material has been work-hardened and Stabilized
How does the 2nd digit applies to the non-heat treatable alloys
? - ANSWER-> 0-8
> denotes the degree of work hardening.
8 - tempers having a UTS eqv to that achieved by a cold
reduction of approx 75% of the metal from its softest stage.
0 is Fully annealed - the softest temper
F - As fabricated
True / False
,2|Page
Materials having the F temper should not be used for structural
welding - ANSWER-True
What is the annealing temp for 1XXX & 5XXX series ? -
ANSWER-345 C
What are the thermal processes which increase the strength of
heat-treatable alloys? - ANSWER-Solution heat treatment and
aging
What is the aging temp and solution treatment emp for 2024 ? -
ANSWER-aging temp = 160 C
solution treatment temp = 500 C
What is the aging temp and solution treatment emp for 6061 ? -
ANSWER-aging temp = 175 C
solution treatment temp = 530 C
What is the aging temp and solution treatment emp for 6063 ? -
ANSWER-aging temp = 175 C
solution treatment temp = 520 C
,3|Page
What is the annealing temp for 2024,6061 and 6063 ? -
ANSWER-415 C
What is the annealing temp for 7005 ? - ANSWER-345 C- 400 C
How is Solution heat-treatment done for heat treatable Al
alloys? - ANSWER-by heating the alloy to a temp below the
melting point for a specific period of time and rapidly cooling
from this temp.
Eg -For AA-6061, the solution heat treatment temp is 530 C
How is aging done for heat-treatable Al alloys? - ANSWER-
relatively low temp heat treatment that results in additional
hardening of the solution heat-treated material.
Eg - For AA6061 it is 170C
The aging process strengthens these alloys by the precipitation
of constituents that are too fine to observe with an optical
microscope.
What is the pre requisite for aging? - ANSWER-alloying
constituents are in a solid solution as a result of rapid cooling
from the solution heat treatment temp.
, 4|Page
What is over-aging? - ANSWER-The precipitated constituents
have a stress field around them to accommodate the
precipitates in the solid phase. This accommodation of a solid
particle in a solid matrix accounts for the strengthening by
aging.
If aging is conducted for an excessive amount of time, or at an
excessive temperature then the precipitates no longer have the
stress field about them and there is a loss of strength. that can
range from little to a great deal. This process is called over-aging
What are naturally aged alloys? - ANSWER-Heat treatable alloys
,such as alloy AA-7005, age at the room temp. These are called
naturally aged alloys.
Does age strengthening of AA-7004 & AA-7005 require rapid
cooling/water quenching to retain constituents in the solid
solution? - ANSWER-No
True / False?
