1018
Data verified1018 is one of the most commonly stocked cold drawn bars in North America: a low carbon steel with higher manganese than 1020 for a slightly stronger, more consistent machined finish. It carburizes well and welds without special precautions.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.15–0.20 |
| Mn | 0.60–0.90 |
| P | ≤0.040 |
| S | ≤0.050 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Tensile strength | 400–470 MPa (hot rolled, typ.) |
| Yield strength | ≥255 MPa (typ.) |
| Density | 7.85 g/cm³ |
| Weldability | Excellent |
Heat treatment
Used as-rolled, cold drawn or carburized; normalize 890 °C to refine cold-worked structure.
Equivalent grades
| Standard | Designation |
|---|---|
| din | C15/C22 (near) |
| aisi | 1018 |
| jis | S15C/S20C (near) |
Compare side by side: 1018 vs SAE 1020 · 1018 vs 1015
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Shafts, pins, studs, tie rods, hydraulic fittings, carburized gears and worms.
Processing: Excellent machinability in cold drawn condition; among the best plain carbon steels for consistent finish and chip control.
FAQ
- 1018 vs 1020 — what is the difference?
- Chemistry is nearly identical; 1018 carries more manganese (0.60–0.90% vs 0.30–0.60%), giving marginally higher as-rolled strength. In practice 1018 is the cold drawn bar grade and 1020 the hot rolled/tube grade.
Need 1018 from stock?
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Ask for a quotationVisit NasteelSource: SAE J403 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.