Carbon Steel

Low-Carbon Steel 1018 (cold drawn)

1018 is a low-carbon (about 0.15–0.20% C) mild steel with good machinability, weldability, and uniform properties. It is a cost-effective choice for general structural and machined parts, and it can be case hardened by carburizing. Request a quote or browse all materials.

Typical Properties

Steel 1018 at a glance

Property	Typical value
Density	7.87 g/cm³ (0.284 lb/in³)
Ultimate tensile strength	440 MPa (64 ksi), cold drawn
Yield strength	370 MPa (54 ksi), cold drawn
Elongation at break	15%
Hardness	126 HB
Elastic modulus	205 GPa
Thermal conductivity	51.9 W/m·K
Carbon content	0.15–0.20%

Typical values for cold-drawn bar. Hot-rolled stock is lower in strength. These are typical reference values from standard published data, not guaranteed minimums. Request material certificates in your RFQ if properties must be verified.

Advantages

Why engineers choose Steel 1018

Cost

Low material cost and wide availability.

Weldability

Excellent weldability with common processes.

Machinability

Machines predictably with a good surface finish.

Case hardening

Carburizing produces a hard wear surface over a tough core.

Design considerations: Rusts without a protective finish; lower strength than medium-carbon or alloy steels such as 1045 or 4140; not through-hardenable.

Applications