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1018 Steel

Practical reference for AISI 1018 steel covering density, typical properties, machinability, applications and CNC considerations.

AISI 1018 is a low-carbon steel used widely for general engineering and machine-shop work. The exact mechanical properties depend on product form and condition.

Cold-drawn reference example

Property Reference
Density 7.87 g/cm³ (0.284 lb/in³)
Elastic modulus About 200 GPa
Machinability MatWeb lists about 70% relative machinability for a cold-drawn reference condition
Strength Varies with product form and condition

Machining behavior

1018 is generally straightforward to machine compared with many harder alloy steels. Use controlled chip load, rigid workholding and the correct tooling data for the operation. Do not assume every 1018 product has the same mechanical condition.

Common uses

  • Fixtures and brackets.
  • General machine components.
  • Pins, posts and low/moderate-duty shafts.
  • Prototype parts.

CNC cutting calculations · CNC cost estimate · Weight estimate

Source: MatWeb’s cold-drawn AISI 1018 sheet lists 7.87 g/cc density and specific strength values for that reference condition. MatWeb AISI 1018.

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