ASNT Level III
ASNT Level 3 Basic Materials & Processes
Exam Questions and Answers 2025
Fracture is a type of material failure. Of the following which is another type of material
failure? -Correct Answer ✔Permanent deformation.
Which of the following statements best differentiates between a defect and a
discontinuity? -Correct Answer ✔Discontinuities can propagate and become defects.
Nondestructive testing is often differentiated from other measurements or inspection
techniques in that: -Correct Answer ✔NDT involves indirect tests related to some other
quality or characteristic of material.
What are the functions of NDT? -Correct Answer ✔Identifying and sorting of material.
Identifying of material properties.
Ensuring absence of faults or defects that could cause a part to fail.
An important basis for the success of fracture control design procedures is: -Correct
Answer ✔The need to ensure that unexpected flaws of some critical size are not
present when the component enters service.
If properly used, NDT can assist in fracture control by: -Correct Answer ✔Providing an
accurate evaluation of the number and type of discontinuities that exist in a material .
A statement that a particular experiment produced a 0.9 probability of detection with a
95% confidence level means that: -Correct Answer ✔There is a 5% probability that the
probability of detection is overstated.
Most solid metals and plastics that have reasonable strength at room temperature are
called: -Correct Answer ✔Engineering materials.
Material properties, as used in design, are most frequently determined by: -Correct
Answer ✔Materials testing.
Even at the early stages of product planning, NDT should be considered because: -
Correct Answer ✔The design of the part should permit easy access to critical areas for
later inspection.
which of the following material properties are of most concern if corrosion resistance is
essential? -Correct Answer ✔Chemical properties.
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, ASNT Level III
Which of the following is true relative to the comparison of the properties of aluminum-
based alloys and iron-based alloys? -Correct Answer ✔Iron can exist in several different
crystalline structures and its properties can be controlled by heat treatment.
Tensile test are conducted on specimens from a newly developed alloy in order to
determine the ultimate tensile strength of the material. Such tests are referred to as: -
Correct Answer ✔Destructive tests.
A bar that is 2 in. long, 2 in. wide and 1 in. thick is subjected to a tensile load acting
along the lenght of the bar of 36000 lbs. What is the tensle stress within the bar? -
Correct Answer ✔18000 psi.
What is Point B on the Stress-Strain diagram where it first starts to curve? -Correct
Answer ✔Elastic limit.
Stress-Strain diagram, which of the following ranges indicates the affect of work
hardening, to its maximum, caused by plastic flow of the material during a tensile load?
-Correct Answer ✔Deformation rate to the ultimate strength
On the Stress-Strain diagram, the points represented by E and F would be closer
together if the material being tested were: -Correct Answer ✔Less ductile.
The modules of elasticity, or Young's modules, is related to the material's relative: -
Correct Answer ✔Stiffness and yield strength.
Which of the following materials is typically considered when the application only
requires high compressive strength? -Correct Answer ✔Cast iron.
A fatigue failure can often be prevented by using NDT to: -Correct Answer ✔Detect
surface discontinuities that could be stress risers.
Which of the following tests uses a pendulum to break a specimen that is notched and
supported on both ends, with the results of measuring energy absorption? -Correct
Answer ✔Charpy test.
What is a S-N curve? -Correct Answer ✔An endurance limit curve diagram.
Direct hardness test provide a measure of a material's ability to resist: -Correct Answer
✔Surface and near-surface penetration.
Under ordinary usage, metals exist as: -Correct Answer ✔Crystalline solids.
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ASNT Level 3 Basic Materials & Processes
Exam Questions and Answers 2025
Fracture is a type of material failure. Of the following which is another type of material
failure? -Correct Answer ✔Permanent deformation.
Which of the following statements best differentiates between a defect and a
discontinuity? -Correct Answer ✔Discontinuities can propagate and become defects.
Nondestructive testing is often differentiated from other measurements or inspection
techniques in that: -Correct Answer ✔NDT involves indirect tests related to some other
quality or characteristic of material.
What are the functions of NDT? -Correct Answer ✔Identifying and sorting of material.
Identifying of material properties.
Ensuring absence of faults or defects that could cause a part to fail.
An important basis for the success of fracture control design procedures is: -Correct
Answer ✔The need to ensure that unexpected flaws of some critical size are not
present when the component enters service.
If properly used, NDT can assist in fracture control by: -Correct Answer ✔Providing an
accurate evaluation of the number and type of discontinuities that exist in a material .
A statement that a particular experiment produced a 0.9 probability of detection with a
95% confidence level means that: -Correct Answer ✔There is a 5% probability that the
probability of detection is overstated.
Most solid metals and plastics that have reasonable strength at room temperature are
called: -Correct Answer ✔Engineering materials.
Material properties, as used in design, are most frequently determined by: -Correct
Answer ✔Materials testing.
Even at the early stages of product planning, NDT should be considered because: -
Correct Answer ✔The design of the part should permit easy access to critical areas for
later inspection.
which of the following material properties are of most concern if corrosion resistance is
essential? -Correct Answer ✔Chemical properties.
1|Page
, ASNT Level III
Which of the following is true relative to the comparison of the properties of aluminum-
based alloys and iron-based alloys? -Correct Answer ✔Iron can exist in several different
crystalline structures and its properties can be controlled by heat treatment.
Tensile test are conducted on specimens from a newly developed alloy in order to
determine the ultimate tensile strength of the material. Such tests are referred to as: -
Correct Answer ✔Destructive tests.
A bar that is 2 in. long, 2 in. wide and 1 in. thick is subjected to a tensile load acting
along the lenght of the bar of 36000 lbs. What is the tensle stress within the bar? -
Correct Answer ✔18000 psi.
What is Point B on the Stress-Strain diagram where it first starts to curve? -Correct
Answer ✔Elastic limit.
Stress-Strain diagram, which of the following ranges indicates the affect of work
hardening, to its maximum, caused by plastic flow of the material during a tensile load?
-Correct Answer ✔Deformation rate to the ultimate strength
On the Stress-Strain diagram, the points represented by E and F would be closer
together if the material being tested were: -Correct Answer ✔Less ductile.
The modules of elasticity, or Young's modules, is related to the material's relative: -
Correct Answer ✔Stiffness and yield strength.
Which of the following materials is typically considered when the application only
requires high compressive strength? -Correct Answer ✔Cast iron.
A fatigue failure can often be prevented by using NDT to: -Correct Answer ✔Detect
surface discontinuities that could be stress risers.
Which of the following tests uses a pendulum to break a specimen that is notched and
supported on both ends, with the results of measuring energy absorption? -Correct
Answer ✔Charpy test.
What is a S-N curve? -Correct Answer ✔An endurance limit curve diagram.
Direct hardness test provide a measure of a material's ability to resist: -Correct Answer
✔Surface and near-surface penetration.
Under ordinary usage, metals exist as: -Correct Answer ✔Crystalline solids.
2|Page
