30 Questions
What is the primary characteristic of torsional strength in metals?
The ability to resist forces attempting to twist the metal
What is the main distinguishing feature between pig iron and cast iron?
Pig iron is more ductile and malleable than cast iron
What is the primary use of high purity pig iron (nodular pig iron)?
Producing ductile iron castings
What is a key limitation of cast iron in terms of its physical properties?
It is weak in tension and strong in compression
Which of the following is NOT a common use of cast iron?
Welding together different pieces of cast iron
What is the primary reason why cast iron is not suitable for absorbing shocks?
It lacks plasticity and ductility
What is the primary characteristic that defines a metal?
Good conductor of electricity and heat
Which property of metals allows them to be easily molded into different shapes?
Ductility
Which property of metals allows them to withstand forces attempting to pull them apart?
Tensile strength
Which property of metals is the opposite of ductility?
Brittleness
Which property of metals allows them to withstand being crushed?
Compressive strength
Which property of metals allows them to tolerate forces trying to slice or cut them apart?
Shear strength
Which metal ranks next to iron in importance and has a wide range of applications?
Copper
Which metal is bluish-white in color and is corrosion resistant due to a thin oxide film forming on its surface?
Zinc
Which metal is used for galvanizing to stop rusting of steel?
Tin
Which metal makes an impression on paper and can be cut with a knife?
Lead
Which metal is silver in color, very strong but lightweight, and used for making automobile bodies?
Aluminum
Which metal is used in the preparation of special alloy steels, ceramic products, and television articles?
Cobalt
What is the primary use of nickel in the manufacturing industry?
As a coating for metals to improve corrosion resistance
Which property of nickel makes it suitable for welding applications?
Its malleability and ability to take a high polish
How does the corrosion resistance of ferrous metals compare to non-ferrous metals?
Non-ferrous metals are more resistant to corrosion than ferrous metals
What is the primary difference between ferrous and non-ferrous metals in terms of their magnetic properties?
Ferrous metals are magnetic, while non-ferrous metals are not
Which property of ferrous metals makes them suitable for applications requiring high tensile strength?
Their ability to carry a high amount of strain
In which application would non-ferrous metals be preferred over ferrous metals?
In applications where the magnetic attraction of iron may be a disadvantage
What material is known for having high impact stress compared to other die casting alloys?
Zinc
Which material cannot be hardened by heating and quenching?
Wrought Iron
What metal is known for being toxic and is great for soldering due to its low melting point?
Lead
Which material is known for being a good conductor of heat but is susceptible to rust and corrosion?
Copper
What metal is lustrous and decorative, but rarely mixed with cheaper alloying metals?
Nickel
Which metal is abundant, lightweight, ductile, malleable, and versatile, but expensive compared to steel with the same strength?
Aluminum
Explore the characteristics of iron, steel, and wrought iron through their impact resistance, machinability, weight to strength ratio, brittleness, weldability, and strength properties. Understand the differences in their applications and properties.
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