Required information

A part made from hot$-$rolled AlSl $1212$ steel undergoes a $19\mathrm{.}00$ percent cold$-$work

operation.

Obtain the yield strength and ultimate strength before and after the cold$-$work operation. Determine th

percent increase in each strength.

The yield strength before the cold$-$work operation is

The yield strength after cold$-$work operation is

$$ kpsi.

The ultimate strength before cold$-$work operation is

kpsi.

The ultimate strength after cold$-$work operation is

$\backslash$times kpsi.

The percent increase in yield strength is

$$ percent.

The percent increase in ultimate strength is

$o.$ percent. Required information

A part made from hot$-$rolled AlSI $1212$ steel undergoes a $19\mathrm{.}00$ percent cold$-$work

operation.

Determine the ratios of ultimate strength to yield strength before and after the cold$-$work operation. What

does the result indicate about the change of ductility of the part? $($Round the final answer to three decimal

places.!

The ratio of ultimate strength to yield strength before cold$-$work operation is

The ratio of ultimate strength to yield strength after cold$-$work operation is

After the cold$-$work operation, the ductility of the part is