Mention four drawbacks of plain carbon steel
1 Answer
  • There cannot be strengthening beyond about 100000 psi without significant loss in toughness (impact resistance) and ductility.
  • Large sections cannot be made with a martensite structure throughout, and thus are
  • not deep hardenable.
  • Rapid quench rates are necessary for full hardening in medium-carbon leads to shape
  • Distortion and cracking of heat-treated steels.
  • Plain-carbon steels have poor impact resistance at low temperatures. -Plain-carbon steels have poor corrosion resistance for engineering problems.
  • Plain-carbon steel oxidizes readily at elevated temperatures.
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