MMET 207 FINAL EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Tempering is done in the tempering range 700-1200 degrees. - Answer-False
Hardenable steels are excellent for welding purposes because they have high
resistance to cracking. - Answer-False
Adding Nickel as an alloying element will increase toughness. - Answer-True
Adding Silicon as an alloying element will increase - Answer-Hardenability
Martensitic stainless steels are hardenable by heat treatment. - Answer-True
Ferritic stainless steels are hardenable by cold working. - Answer-False
Austenitic Stainless Steels have excellent weldability by almost all welding processes. -
Answer-True
Stainless steels are prone to crevice corrosion. - Answer-False
Stainless steels do not perform best in oxidizing environments. - Answer-False
The prefix, E, signifies a steel that is - Answer-made in the electric arc furnace
Which of the following is a physical property?
a. color
b. hardness
c. microstructure
d.valence
e. electronegativity
f. composition - Answer-Color
hardness = mechanical property
microstructure = chemical property
valence = chemistry term
electronegativity = chemical property
composition = chemical property
Which of the following is not a dimensional concern in the use of engineering materials?
a. available sizes
b. surface texture
c. flatness
d. camber
e. centerline
, f. thickness available - Answer-Thickness Available
Which of the following is the best heat insulator?
a. Fe
b. Ni
c. Ag
d. Ti
eW
f. Mo - Answer-Titanium
Which of the following is the best electrical conductor?
a. Cu
b. Ag
c. Pt
d. Hg
e. Ni
f Au - Answer-Ag because lowest electrical resistance
Which of the following is most likely to affect an element's ability to form compounds?
a. atomic number
b. atomic activity
c. density
d. atomic structure
e. valence
f. van der Waal's forces - Answer-Valence
Which of the following is not a mechanical property?
a. Poisson's ratio
b. shear modulus
c. hardness
d. endurance limit
e. crystal limits
f. bending stress - Answer-Crystal Limits
A traditional tensile tester can perform all of the following mechanical property test
except:
a. hardness
b. shear strength
c. impact strength
d. bending modulus
e. yield strength
f. compressive yield strength - Answer-Impact Strength
A true stress, true strain test
a. does all of the following
b. uses instantaneous areas
WITH COMPLETE SOLUTIONS
Tempering is done in the tempering range 700-1200 degrees. - Answer-False
Hardenable steels are excellent for welding purposes because they have high
resistance to cracking. - Answer-False
Adding Nickel as an alloying element will increase toughness. - Answer-True
Adding Silicon as an alloying element will increase - Answer-Hardenability
Martensitic stainless steels are hardenable by heat treatment. - Answer-True
Ferritic stainless steels are hardenable by cold working. - Answer-False
Austenitic Stainless Steels have excellent weldability by almost all welding processes. -
Answer-True
Stainless steels are prone to crevice corrosion. - Answer-False
Stainless steels do not perform best in oxidizing environments. - Answer-False
The prefix, E, signifies a steel that is - Answer-made in the electric arc furnace
Which of the following is a physical property?
a. color
b. hardness
c. microstructure
d.valence
e. electronegativity
f. composition - Answer-Color
hardness = mechanical property
microstructure = chemical property
valence = chemistry term
electronegativity = chemical property
composition = chemical property
Which of the following is not a dimensional concern in the use of engineering materials?
a. available sizes
b. surface texture
c. flatness
d. camber
e. centerline
, f. thickness available - Answer-Thickness Available
Which of the following is the best heat insulator?
a. Fe
b. Ni
c. Ag
d. Ti
eW
f. Mo - Answer-Titanium
Which of the following is the best electrical conductor?
a. Cu
b. Ag
c. Pt
d. Hg
e. Ni
f Au - Answer-Ag because lowest electrical resistance
Which of the following is most likely to affect an element's ability to form compounds?
a. atomic number
b. atomic activity
c. density
d. atomic structure
e. valence
f. van der Waal's forces - Answer-Valence
Which of the following is not a mechanical property?
a. Poisson's ratio
b. shear modulus
c. hardness
d. endurance limit
e. crystal limits
f. bending stress - Answer-Crystal Limits
A traditional tensile tester can perform all of the following mechanical property test
except:
a. hardness
b. shear strength
c. impact strength
d. bending modulus
e. yield strength
f. compressive yield strength - Answer-Impact Strength
A true stress, true strain test
a. does all of the following
b. uses instantaneous areas
