2 July 2022

Plain Carbon Steel

Plain Carbon Steel

Plain Carbon Steel

  • Lowest cost
  • Should be considered first in most application
  • 3 Classifications
  • Low Carbon (less than 0.3% carbon)
  • Med Carbon (0.3% to 0.6%)
  • High Carbon (0.6% to 0.95%)

 

1.) Low Carbon (less than 0.3% carbon)
  • Low strength, good formability
  • If wear is a potential problem, can be carburized (diffusion hardening)
  • Most stampings made from these steels
  • AISI 1008, 1010, 1015, 1018, 1020, 1022, 1025
2.) Med Carbon (0.3% to 0.6%)
  • Have moderate to high strength with fairly good ductility
  • Can be used in most machine elements
  • AISI 1030, 1040, 1050, 1060*
3.) High Carbon (0.6% to 0.95%)
  • Have high strength, lower elongation
  • Can be quench hardened
  • Used in applications where surface subject to abrasion – tools, knives, chisels, ag implements.
  • AISI 1080, 1095

 

  • 1018  Low carbon  Yield strength 55ksi
  • 1045 Medium carbon  Yield strength 70ksi
  • A36 Low carbon  Yield strength 36ksi
  • 12L14 Low carbon  Yield strength 70ksi
  • 1144 Medium carbon  Yield strength 95ksi

 

  • Again, alloy of iron and carbon with carbon the major strengthening element via solid solution strengthening.
  • If carbon level high enough (greater than 0.6%) can be quench hardened (aka: dispersion hardening, through hardened, heat treated, austenite and quenched, etc..).
  • Can come in HRS and CRS options
  • The most common CRS are 1006 through 1050 and 1112, 1117 and other free machining steels

 

 

 

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