Unit 4.3 Alevel Metal tests and heat treating Quiz

What is the purpose of heat treatment of metals?

• To weaken the metals

• To enhance their properties

• To change their color

• To increase their weight

Which property of metals describes their ability to withstand forces that attempt to pull them apart?

• Hardness

• Malleability

• Tensile strength

• Conductivity

Which characteristic of metals refers to their capacity to be shaped or deformed, usually by hammering or rolling?

• Toughness

• Hardness

• Malleability

• Corrosion

What is the purpose of testing for tensile strength in metals?

• To determine how much heat the metal can absorb

• To determine the pulling forces the metal can resist

• To measure the electrical conductivity of the metal

• To check the color fastness of the metal

What is used to test tensile strength in the industry?

• A barometer

• A hydrometer

• A tensometer

• A spectrometer

What is the purpose of the test piece shown in the image?

• To demonstrate the flexibility of metals

• To test the tensile strength of metals

• To show the corrosion resistance of metals

• To compare the electrical conductivity of different metals

What happens to the arm in an Izod impact test?

• It is heated to a high temperature

• It is submerged in water

• It swings and hits a notched metal sample

• It is cooled to a low temperature

Which of the following are hardness tests?

• Brinell test

• Vickers test

• Rockwell test

• Mohs test

How is the result of a hardness test typically measured?

• By the weight of the indenter

• By the time it takes to indent

• By the depth or diameter of the indentation

• By the height of the metal after indentation

What is the purpose of salt spray testing in corrosion resistance studies for metals?

• To measure the tensile strength of metals

• To accelerate corrosive attack and test finishes on metals

• To test the electrical conductivity of metals

• To determine the melting point of metals