1015
Data verified1015 is a low carbon carburizing-grade steel for small parts needing a hard wear surface over a ductile core. It bridges the gap between the very soft 1008/1010 grades and the weldable workhorse 1020.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.13–0.18 |
| Mn | 0.30–0.60 |
| 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 | 340–420 MPa (hot rolled, typ.) |
| Density | 7.85 g/cm³ |
| Weldability | Excellent |
Heat treatment
Normalize 880–900 °C; carburize 900–930 °C where a hard case is required.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.0401 (C15) |
| aisi | 1015 |
| jis | S15C |
| gb | 15 |
Compare side by side: 1015 vs SAE 1020 · 1015 vs 1018
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Small gears, pins, rollers, cam followers, case-hardened fasteners.
Processing: Good machinability and weldability; responds well to carburizing and cyaniding.
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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.