AWS SENIOR CERTIFIED WELDING INSPECTOR
(SCWI) NEWEST 2026 UPDATE — ACTUAL
QUESTIONS & CORRECT ANSWERS | ALREADY
GRADED A+
Content covered (most tested areas): welding metallurgy,
WPS/PQR qualification, codes and standards (AWS D1.1), NDE
methods, weld discontinuities, procedure variables, heat
treatment, materials, mechanical testing, inspection
techniques, safety, documentation, and quality assurance.
1. Which microstructure is most associated with high hardness in
carbon steel weld HAZ?
A. Ferrite
B. Pearlite
C. Austenite
D. Martensite
Martensite forms during rapid cooling and is hard and brittle,
commonly found in HAZ of higher carbon steels.
2. A Procedure Qualification Record (PQR) primarily documents:
A. Planned welding variables
B. Welder performance
C. Actual test results and variables used
D. Inspection schedule
PQR records the real conditions and results from qualification
welding.
,3. According to AWS D1.1, preheat is used mainly to:
A. Increase deposition rate
B. Reduce distortion
C. Reduce hydrogen cracking risk
D. Improve bead appearance
Preheat slows cooling and allows hydrogen diffusion.
4. Which NDE method is best for detecting surface-breaking cracks in
ferromagnetic materials?
A. Ultrasonic testing
B. Radiographic testing
C. Magnetic particle testing
D. Eddy current testing
MT is highly sensitive to surface and near-surface flaws in
ferromagnetic metals.
5. The primary purpose of a Welding Procedure Specification (WPS)
is to:
A. Record test results
B. Certify inspectors
C. Provide instructions for production welding
D. Approve base metals
WPS gives qualified parameters to follow in fabrication.
6. Lack of fusion is classified as a:
A. Dimensional defect
B. Surface irregularity
C. Metallurgical inclusion
D. Planar discontinuity
It occurs along fusion boundaries and is planar.
, 7. Radiographic testing is most effective for detecting:
A. Tight cracks
B. Surface porosity
C. Volumetric discontinuities
D. Lamellar tearing
RT reveals density differences like slag or gas pockets.
8. Which essential variable change requires WPS requalification?
A. Welder name
B. Shop temperature
C. Base metal group change
D. Electrode brand color
Essential variables affect mechanical properties.
9. Interpass temperature is controlled to:
A. Increase hardness
B. Eliminate slag
C. Improve penetration
D. Control cooling rate and properties
Maintains consistent microstructure.
10. Lamellar tearing occurs primarily due to:
A. Rapid cooling
B. Excess reinforcement
C. Through-thickness shrinkage strain
D. Hydrogen diffusion
Occurs in rolled plate with inclusions parallel to surface.
11. Which mechanical test measures ductility of weld metal?
A. Hardness test
B. Charpy impact
(SCWI) NEWEST 2026 UPDATE — ACTUAL
QUESTIONS & CORRECT ANSWERS | ALREADY
GRADED A+
Content covered (most tested areas): welding metallurgy,
WPS/PQR qualification, codes and standards (AWS D1.1), NDE
methods, weld discontinuities, procedure variables, heat
treatment, materials, mechanical testing, inspection
techniques, safety, documentation, and quality assurance.
1. Which microstructure is most associated with high hardness in
carbon steel weld HAZ?
A. Ferrite
B. Pearlite
C. Austenite
D. Martensite
Martensite forms during rapid cooling and is hard and brittle,
commonly found in HAZ of higher carbon steels.
2. A Procedure Qualification Record (PQR) primarily documents:
A. Planned welding variables
B. Welder performance
C. Actual test results and variables used
D. Inspection schedule
PQR records the real conditions and results from qualification
welding.
,3. According to AWS D1.1, preheat is used mainly to:
A. Increase deposition rate
B. Reduce distortion
C. Reduce hydrogen cracking risk
D. Improve bead appearance
Preheat slows cooling and allows hydrogen diffusion.
4. Which NDE method is best for detecting surface-breaking cracks in
ferromagnetic materials?
A. Ultrasonic testing
B. Radiographic testing
C. Magnetic particle testing
D. Eddy current testing
MT is highly sensitive to surface and near-surface flaws in
ferromagnetic metals.
5. The primary purpose of a Welding Procedure Specification (WPS)
is to:
A. Record test results
B. Certify inspectors
C. Provide instructions for production welding
D. Approve base metals
WPS gives qualified parameters to follow in fabrication.
6. Lack of fusion is classified as a:
A. Dimensional defect
B. Surface irregularity
C. Metallurgical inclusion
D. Planar discontinuity
It occurs along fusion boundaries and is planar.
, 7. Radiographic testing is most effective for detecting:
A. Tight cracks
B. Surface porosity
C. Volumetric discontinuities
D. Lamellar tearing
RT reveals density differences like slag or gas pockets.
8. Which essential variable change requires WPS requalification?
A. Welder name
B. Shop temperature
C. Base metal group change
D. Electrode brand color
Essential variables affect mechanical properties.
9. Interpass temperature is controlled to:
A. Increase hardness
B. Eliminate slag
C. Improve penetration
D. Control cooling rate and properties
Maintains consistent microstructure.
10. Lamellar tearing occurs primarily due to:
A. Rapid cooling
B. Excess reinforcement
C. Through-thickness shrinkage strain
D. Hydrogen diffusion
Occurs in rolled plate with inclusions parallel to surface.
11. Which mechanical test measures ductility of weld metal?
A. Hardness test
B. Charpy impact
