Question

Cast irons containing graphite are formed under a metastable eutectic reaction. 2) ___ High carbon steels are easily welded. 3) ___ Hardenability refers to the ease with which a steel can be quenched to form pearlite. 4) ___ In the AISI system for designating steels, the first two numbers refer to the major alloying elements of the steel. 5) ___ Quenching hardens most steels while tempering increases the toughness.

Answer 1

Answer:

Stating which of the above is TRUE or FALSE;

1) True

2) False

3) False

4) True

5) True

Explanation:

1)True ___ Cast irons containing graphite are formed under a metastable eutectic reaction.

2) False___ High carbon steels are easily welded.

3) False ___ Hardenability refers to the ease with which a steel can be quenched to form pearlite.

4) True ___ In the AISI system for designating steels, the first two numbers refer to the major alloying elements of the steel.

5) True ___ Quenching hardens most steels while tempering increases the toughness.