The name of work materials Chemical Composition (%) Chemical Composition (%)

and material Symbols Cast irons Gray iron castings

others

Tensile strength

Mechanical Property of Standard test block Hardness Heat treatment of standard test block

Tough cast Spheroidal irons graphite Ductile cast Cast irons irons

High carbon chromium bearing steels Spheroidizing

Free cutting carbon steels

Rolled steels for general structure

Cold-reduced carbon steel sheets Standard thermal refining

Technical Inf