Construct the radial hardness profiles to scale for the following:
(a) A 75-mm (3-in) diameter cylindrical specimen of an 8660 (0.6 w% C) steel alloy that has been quenched in moderately agitated water.
(b) A 50-mm (2-in) diameter cylindrical specimen of an 4340 steel alloy that has been quenched in moderately agitated oil.
(c) A 100-mm (4-in) diameter cylindrical specimen of an 8620 (0.2 w% C) steel alloy that has been quenched in moderately agitated water.