NM GS24 STRUCTURAL STEEL ERECTION
EXAM 2026 FULL PRACTICE TEST WITH
DETAILED SOLUTIONS
◉ Explain the ductility of steel. Answer: the ability to undergo large
plastic deformation prior to failure
◉ How does the increase of carbon affect tensile strength, yield
point and percent elongation of steel? Answer: tensile strength
increases
yield point increases
percent elongation decreases (less ductile)
◉ if steel the ductility of steel is increased, how does this affect
percent elongation? Answer: increases
◉ if the brittleness of steel is increased, how does this affect %EL?
Answer: decreases
◉ how is %EL (percent elongation) calculated? Answer: %EL = (Lf -
Lo)/Lo *100
, ◉ Another ductility measurement is % area reduction. How is this
calculated? Answer: same as %EL except with Area
◉ How can we classify the ductility of steel? Answer: if the %EL >
5%, the material is ductile
◉ What is toughness? Answer: energy up to fracture
- the ability of steel to absorb energy under suddenly imposed
stresses
◉ Toughness calculated during a quick impact test is what % of
when it is calculated over a long period of time (static loading - slow
tension tests)? Answer: 20%
◉ Steel behaves more brittle under impact than under slow static
loading? TRUE or FALSE Answer: TRUE
◉ What quick impact test method is generally used to test the
toughness of steel? Answer: Charpy Impact Test
EXAM 2026 FULL PRACTICE TEST WITH
DETAILED SOLUTIONS
◉ Explain the ductility of steel. Answer: the ability to undergo large
plastic deformation prior to failure
◉ How does the increase of carbon affect tensile strength, yield
point and percent elongation of steel? Answer: tensile strength
increases
yield point increases
percent elongation decreases (less ductile)
◉ if steel the ductility of steel is increased, how does this affect
percent elongation? Answer: increases
◉ if the brittleness of steel is increased, how does this affect %EL?
Answer: decreases
◉ how is %EL (percent elongation) calculated? Answer: %EL = (Lf -
Lo)/Lo *100
, ◉ Another ductility measurement is % area reduction. How is this
calculated? Answer: same as %EL except with Area
◉ How can we classify the ductility of steel? Answer: if the %EL >
5%, the material is ductile
◉ What is toughness? Answer: energy up to fracture
- the ability of steel to absorb energy under suddenly imposed
stresses
◉ Toughness calculated during a quick impact test is what % of
when it is calculated over a long period of time (static loading - slow
tension tests)? Answer: 20%
◉ Steel behaves more brittle under impact than under slow static
loading? TRUE or FALSE Answer: TRUE
◉ What quick impact test method is generally used to test the
toughness of steel? Answer: Charpy Impact Test
