APPLICATIONS AND PROCESSING OF METAL ALLOYS
This question asks that we list four classifications of steels, and, for each, to describe properties and
cite typical applications.
nonresponsive to heat treatments;
relatively soft and weak;
automobile bodies, structural shapes, pipelines, buildings, bridges, and
heat treatable, relatively large combinations of mechanical characteristics.
railway wheels and tracks, gears, crankshafts, and machine parts.
hard, strong, and relatively brittle.
chisels, hammers, knives, and hacksaw blades.
(Stainless and Tool)
hard and wear resistant;
resistant to corrosion in a large variety of
cutting tools, drills, cutlery, food processing, and surgical tools.
Ferrous alloys are used extensively because:
Iron ores exist in abundant quantities.
Economical extraction, refining, and fabrication techniques are available.
The alloys may be tailored to have a wide range of properties.
Disadvantages of ferrous alloys are:
They are susceptible to corrosion.
They have relatively high densities.
They have relatively low electrical conductivities.
Ferritic and austenitic stainless steels are not heat treatable since "heat treatable" is taken to mean
that martensite may be made to form with relative ease upon quenching austenite from an elevated