SAE 1018 carbon steel

SAE 1018 carbon steel is a widely used low-carbon, free-machining grade with 0.12 to 2% carbon content. As the carbon content increases, steel hardness and strength improve, but ductility decreases. SAE 1018 is favored for its versatility in forming, machining, welding, and fabrication. Although its mechanical properties aren’t exceptional, its ease of machinability and availability make it one of the most commonly used grades.

SAE 1018 Grade Application:

SAE 1018 carbon steel is frequently utilized in high-volume screw machine parts production. Its other applications include:

  • Shafts
  • Spindles
  • Pins
  • Rods
  • Sprocket assemblies

SAE 1018 Equivalent Grades:

Standard Equivalent Grades
AISI / SAE 1018
BS 970 708A30, CDS110
UNS
DIN 25CrMo4, GS-25CrMo4
UNI 25CrMo4 (KB), 30CrMo4
JIS SCM 420, SCM 430, SCCrM1
EN Name
EN # 1.7218

Additional Grades Available:

Other grades include MS, EN1A, EN3B, EN8, EN9, EN24, EN31, and various alloy steels like 42CrMo4, H13, and SAE4140.

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