Manufacturing Technology Department;
Central Metallurgical R & D Institute;
Cairo;
Egypt;
Mechanical Engineering Department;
Faculty of Engineering;
Helwan University;
Helwan;
Egypt.;
Spare Parts Sector;
Egyptian Iron and Steel Company;
Helwan;
Egypt;
High; Speed; Tool; Steels; Laser; Surface; Hardening; Ashby; and; Easterling; Heat; Transfer; Equations; Design; Expert; Software; Laser; Processing; Charts;