Carbon Steel 1018

Carbon Steel 1018 is a low-carbon steel with excellent machinability and weldability. It is one of the most commonly used steels for general-purpose CNC machining, offering good surface finish and easy case hardening.

Machinability

78/100

Tolerance

±0.01 mm

Category

Carbon & Alloy Steel

Material Properties

PropertyValue
Tensile Strength440 MPa (64 ksi)
Yield Strength370 MPa (54 ksi)
Hardness126 HB
Density7.87 g/cm³
Machinability Rating78/100
Thermal Conductivity51.9 W/m·K
Melting Point1,480–1,526 °C
Tolerance±0.01 mm

Common Grades

1018 Cold Rolled1018 Hot Rolled

Advantages

  • Excellent machinability
  • Weldable
  • Case-hardenable
  • Low cost
  • Good surface finish

Limitations

  • Low strength
  • Poor corrosion resistance
  • Requires surface treatment

Common Applications

Pins

Shafts

Spindles

Rods

Fixtures

Spacers

Industries Served

Industrial MachineryAutomotiveConstructionConsumer Products

Available Surface Finishes

Black OxideZinc PlatingNickel PlatingPowder CoatPaint

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