ASNT Level 3 Basic Materials &
Processes
Which of the following statements is true regarding the electrical conductivity of
aluminum alloys? - CORRECT ANSWER-Conductivity decreases at elevated
temperatures.
The heat treatment of aluminum for the purpose of hardening and strengthening: -
CORRECT ANSWER-Can produce tensile strengths equivalent to some carbon steels.
Which of the following metals has low strength, high corrosion resistance and is used
largely in die casting operations? - CORRECT ANSWER-Zinc.
Which of the following metals alloys has a density approximately two-thirds that of
aluminum? - CORRECT ANSWER-Magnesium.
Brass and bronze are alloys of zinc, tin and a large percentage of: - CORRECT
ANSWER-Copper.
Monel and inconel are: - CORRECT ANSWER-Nickel alloys.
Which of the following materials cannot typically be used in the as-cast state? -
CORRECT ANSWER-Carbon
A high-strength, low density corrosion resistant metal alloy of significance in the aircraft,
marine and chemical processing industries is: - CORRECT ANSWER-Titanium.
Which of the following statements is true concerning plastics following their initial
polymerization. - CORRECT ANSWER-Thermosetting plastics do not soften, but char
and deteriorate when reheated.
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.
Processes
Which of the following statements is true regarding the electrical conductivity of
aluminum alloys? - CORRECT ANSWER-Conductivity decreases at elevated
temperatures.
The heat treatment of aluminum for the purpose of hardening and strengthening: -
CORRECT ANSWER-Can produce tensile strengths equivalent to some carbon steels.
Which of the following metals has low strength, high corrosion resistance and is used
largely in die casting operations? - CORRECT ANSWER-Zinc.
Which of the following metals alloys has a density approximately two-thirds that of
aluminum? - CORRECT ANSWER-Magnesium.
Brass and bronze are alloys of zinc, tin and a large percentage of: - CORRECT
ANSWER-Copper.
Monel and inconel are: - CORRECT ANSWER-Nickel alloys.
Which of the following materials cannot typically be used in the as-cast state? -
CORRECT ANSWER-Carbon
A high-strength, low density corrosion resistant metal alloy of significance in the aircraft,
marine and chemical processing industries is: - CORRECT ANSWER-Titanium.
Which of the following statements is true concerning plastics following their initial
polymerization. - CORRECT ANSWER-Thermosetting plastics do not soften, but char
and deteriorate when reheated.
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.
