Ferrous Metals

Question 1

1. The reduction of iron ore, by mixing with coke, limestone, and oxygen for combustion of the coke is accomplished in:
A. A blast furnace
B. An open-hearth furnace
C. A Bessemer converter
D. A basic oxygen furnace

Answer 1

A. A blast furnace

Question 2

2. In the iron and steel making process, the term pig iron references to?
   A. The waste material that contains high concentrations of impurities and slag and is either discarded or used as a byproduct
   B. A high-carbon, low-ductility metal produced in the blast furnace that can be used to make subsequent types of iron and steel
   C. The molten metal from the blast furnace that is not usable and is poured off into a series fo crude castings called pigs
   D. Low-cost metal used in large production factories

Answer 2

B. A high-carbon, low-ductility metal produced in the blast furnace that can be used to make subsequent types of iron and steel

Question 3

3. Which of the following techniques is often used to speed up the steel making process?
   A. Adding large amounts of carbon to the molten metal
   B. Reducing the amount of scrap steel that is often added to the molten metal
   C. Adding oxygen to the molten metal
   D. Converting the old open-hearth furnaces into electric furnaces

Answer 3

C. Adding oxygen to the molten metal

Question 4

4. Typically, the highest quality of steel is produced in:
A. An electric furnace
B. An open-hearth furnace
C. A Bessemer furnace
D. A basic oxygen furnace

Answer 4

A. An electric furnace

Question 5

5. What percentage of carbon is found in steel:
A. Between 3% & 4%
B. Between 2% and 3%
C. Less than 0.2%
D. Less than 2%

Answer 5

D. Less than 2%

Question 6

6. By which of the following processes is most of the worlds steel produced:
A. Bessemer converter
B. Electric furnace
C. Open hearth
D. Basic oxygen

Answer 6

D. Basic oxygen

Question 7

7. An undesirable byproduct of steel-making process is:
A. Coke
B. Low-carbon steel 
C. Low alloy steel
D. Slag

Answer 7

D. Slag

Question 8

8. A steel with 40 points of carbon contains how much carbon?
A. 40%
B. 4%
C. 0.4%
D. 0.04%

Answer 8

C. 0.4%

Question 9

9. Low carbon steel contains approximately how much carbon?
A. 0.6 - 2.5%
B. 0.06 – 0.25%
C. 0.5 - 1.6%
D. 5 TO 16%

Answer 9

B. 0.06 - 0.25%

Question 10

10. Corrosion-resistant steels having relatively high percentages of nickel and chrome are called:
A. Wrought iron
B. Low-alloy steels
C. Stainless steels
D. Nonferrous steels

Answer 10

C. Stainless steels

Question 11

11. Austenitic stainless steels are paramagnetic meaning:
    A. Alternating current must be used when using the magnetic particle testing method
    B. The steel is very dense and relative to other steels difficult to penetrate with x-rays
    C. Ultrasonics is the logical NDT method to choose because of the coarse-grained nature of a paramagnetic material
    D. The material has a very low permeability

Answer 11

D. The material has a very low permeability

Question 12

12. Which of the following is an advantage of cast steel over wrought steels?
    A. Cast steels usually have higher mechanical properties than wrought steels
    B. Cast steels have more isotropic properties than wrought steels
    C. Cast steels are more corrosion resistant than wrought steels
    D. Cast steels cannot be heat treated and are thus less expensive to produce than wrought steels

Answer 12

B. Cast steels have more isotropic properties than wrought steels