PRINCIPLES: Metals and the crystalline state -- Equilibrium diagrams -- Changes in the solid state -- COMMERICALLY IMPORTANT NON-FERROUS ALLOYS: Brass -- Bronze and bearings -- Age hardening; light alloys -- ALLOYS OF IRON AND CARBON: Iron-carbon alloys -- Heat treatment of steel -- Cast iron -- ALloy steels -- Tool steels -- Corrosion -- Corrosion-resistant steels -- Welding.