Carbon

1018 Cold Finished

Carbon AISI/SAE 1018 COLD FINISHED (UNS G10180) Cold Drawn '20' Carbon Steel, available in all bar sections
Typical Analysis
1018
C Mn P S
.20 .70 .022 .024
1020
C Mn P S
.20 .50 .017 .025
Characteristics
  • Most cold finished bars are produced by cold drawing oversize hot rolled bars through a die. The cold reduction of the bar results in significantly improved mechanical properties, with a smooth surface finish to close tolerances. The cold working of the bar likewise improves machinability, usually rated at 76. Larger bars are often produced by turning and polishing only. In this case, the properties of the steel are not improved and remain the same as the original hot rolled, special quality bar. The product is easy to weld and readily responds to carburizing. Cold finished product is manufactured in conformance to ASTM A108
Typical Applications
  • All forms of shafting and machinery parts. When carburized -gears, pinions, king pins
Carbon AISI/SAE 1018 COLD FINISHED (UNS G10180) Size Tolerances –Rounds Tolerances
  • all tolerances are MINUS
1 ½" dia. (38.1 mm) and under Minus 0.002" (.050 mm)
Over 1 ½" dia. to 2 ½" dia (63.5 mm) Minus 0.003" (.075 mm)
Over 2 ½" dia. to 4" dia (101.6 mm) Minus 0.004" (.100 mm)
Over 4" dia. to 6" dia (152.4" mm) Minus 0.005" (.125 mm)
Over 6" dia. to 8" dia (203.2 mm) Minus 0.006" (.150 mm)
Carbon AISI/SAE 1018 COLD FINISHED (UNS G10180) Mechanical Properties
  • Expected minimum properties - Cold Drawn
Size - inches 1" Dia 2" Dia 3" Dia
Size - mm 25.4 50.4 76.2
Tensile Strength, psi 65,000 60,000 55,000
Tensile Strength, N/mm² 448 414 379
Yield Strength, psi 55,000 50,000 45,000
Yield Strength, N/mm² 379 345 310
Elongation (%) 16 15 15
Reduction of Area (%) 40 35 35
HB 131 121 111
Carbon AISI/SAE 1018 COLD FINISHED (UNS G10180) Mechanical Properties
  • Typical properties of material supplied - Cold Drawn
-
Size - inches1" Dia 2" Dia 3" Dia
Size - mm 25.4 50.4 76.2
Tensile Strength, psi 91,000 84,000 74,000
Tensile Strength, N/mm² 627 579 510
Yield Strength, psi 73,000 68,000 60,000
Yield Strength, N/mm² 503 469 414
Elongation (%) 14.4 16.2 20.7
Reduction of Area (%) 52.1 48.5 49.4
HB 187 183 163

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