On the left you can see list of steels which are divided by their mechanical- physical characteristic .
Selecting e.g . "Cr, Mn, Si, Al - steels".
After confirmed selection, on the right- up will show offer of basic mechanical property from which
was selected "Tensibility" and next status of material, e.g . "Quenched, heat treated".

Required value was writing in fields marked with arrow.
Permit area of values is mentioned on the right from this fields - "7 - 20 %". After typing e.g . "18"
you select the state, e.g . "France" and thereafter on the right will be presented list of such materials.