—Good formability and
weld ability but lack hardenability
—Used in hot-forming,
cold-forming etc.
Medium
carbon steel or Mild steel (0.3% to 0.8 % carbon)
—high toughness &
ductility
—Most widely used
steel
—Heat treatable (austenitizing, quenching and
tempering).
—Hardenability is increased by
adding Ni, Cr, Mo.
—Used in various
tempered conditions.
—Typical applications:
gears, railway tracks, machine parts.
High
carbon steel (more the 0.8 %C)
—Hardness & wear
resistance are high but Toughness & formability is very low
NoteÞ purest form of Iron i.e. wrought iron has least carbon
content.
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