ASNT Level 3 Basic Materials &
Processes 2025 Latest Exam set
Questions with simplified correct
Answers
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.
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.
The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-packed HCP all refer to
the: - correct answer-Lattice structures that make up unit cells in a solid metallic structure.
The process of returning ductility to cold-worked low-carbon steel is called: - correct answer-
Recrystallization.
Many metals exhibit an increase in strength caused by plastic flow beyond the elastic limit. This effect is
called: - correct answer-Work hardening.
When used as in-process treatment, Re crystallization can: - correct answer-Improve ductility.
Processes called austenitizing, annealing, normalizing and spheroidizing are: - correct answer-
Approximate equilibrium heat-treatment process.
The term"precipitation hardening" is often used interchangeably with the term: - correct answer-Age
hardening.
An NDT method that has the ability to measure changes in electrical conductivity caused by the effects
of heat treatment is: - correct answer-Eddy current.
Spheroidizing and normalizing have the effect of: - correct answer-Increasing ductility.
When a steel has been quench-hardened and then reheated to some point below the lower
transformation temperature for the purpose of reducing brittleness, this is called: - correct answer-
Tempering.
Annealing is usually performed to: - correct answer-Release stress.
Attacks on metals be direct chemical action and/or electrolysis are called: - correct answer-Corrosion.
Metal corrosion that is accelerated when the metal is under a loads is called: - correct answer-Stress
corrosion.
Which of the following does not help to prevent corrosion: - correct answer-Stress relieving.
Factors of safety are often in the range of 2 to 4. These factors: - correct answer-Could be reduced with
the assurance of NDT techniques that the material was free of discontinuities.
The reduction of iron ore, by mixing with coke, limestone and oxygen for combustion of the coke, is
accomplished in: - correct answer-A Blast furnace.
In the iron and steel making process, the term pig iron refers to: - correct answer-A high carbon, low
ductility metal produced in the blast furnace that can be used to make subsequent types of iron and
steel.
Which of the following techniques is often used to speed up the steel making process? - correct answer-
Adding oxygen to the molten metal.
Typically, the highest quality of steel is produced in: - correct answer-An electric furnace.
What percentage of carbon is found in steel: - correct answer-Less than 2%
By which of the following process is most of the world's steel produced: - correct answer-Basic oxygen.
An undesirable byproduct of steel making processes is: - correct answer-Slag
A steel with 40 points of carbon contains: - correct answer-0.4 % carbon
Corrosion resistant steels having relatively high percentages of nickel and chromium are called - correct
answer-Stainless steel
Processes 2025 Latest Exam set
Questions with simplified correct
Answers
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.
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.
The term body-centered cubic BCC, face-centered cubic FCC and hexagonal close-packed HCP all refer to
the: - correct answer-Lattice structures that make up unit cells in a solid metallic structure.
The process of returning ductility to cold-worked low-carbon steel is called: - correct answer-
Recrystallization.
Many metals exhibit an increase in strength caused by plastic flow beyond the elastic limit. This effect is
called: - correct answer-Work hardening.
When used as in-process treatment, Re crystallization can: - correct answer-Improve ductility.
Processes called austenitizing, annealing, normalizing and spheroidizing are: - correct answer-
Approximate equilibrium heat-treatment process.
The term"precipitation hardening" is often used interchangeably with the term: - correct answer-Age
hardening.
An NDT method that has the ability to measure changes in electrical conductivity caused by the effects
of heat treatment is: - correct answer-Eddy current.
Spheroidizing and normalizing have the effect of: - correct answer-Increasing ductility.
When a steel has been quench-hardened and then reheated to some point below the lower
transformation temperature for the purpose of reducing brittleness, this is called: - correct answer-
Tempering.
Annealing is usually performed to: - correct answer-Release stress.
Attacks on metals be direct chemical action and/or electrolysis are called: - correct answer-Corrosion.
Metal corrosion that is accelerated when the metal is under a loads is called: - correct answer-Stress
corrosion.
Which of the following does not help to prevent corrosion: - correct answer-Stress relieving.
Factors of safety are often in the range of 2 to 4. These factors: - correct answer-Could be reduced with
the assurance of NDT techniques that the material was free of discontinuities.
The reduction of iron ore, by mixing with coke, limestone and oxygen for combustion of the coke, is
accomplished in: - correct answer-A Blast furnace.
In the iron and steel making process, the term pig iron refers to: - correct answer-A high carbon, low
ductility metal produced in the blast furnace that can be used to make subsequent types of iron and
steel.
Which of the following techniques is often used to speed up the steel making process? - correct answer-
Adding oxygen to the molten metal.
Typically, the highest quality of steel is produced in: - correct answer-An electric furnace.
What percentage of carbon is found in steel: - correct answer-Less than 2%
By which of the following process is most of the world's steel produced: - correct answer-Basic oxygen.
An undesirable byproduct of steel making processes is: - correct answer-Slag
A steel with 40 points of carbon contains: - correct answer-0.4 % carbon
Corrosion resistant steels having relatively high percentages of nickel and chromium are called - correct
answer-Stainless steel
