1.2067 vs O1
These two grades are listed as equivalents of each other: their chemistry windows overlap and they serve the same applications. They are not always identical — check the differences below before substituting, especially in certified designs.
1.2067
Tool Steel
1.2067 is a through-hardening chromium cold work steel of the bearing-steel family (similar to 100Cr6/L3 practice). It gives high hardness and wear resistance in small tools and precision parts at low alloy cost.
Standards: DIN 1.2067 · AISI L3 (near) · JIS SUJ2 (near) · GB Cr2 (near)
O1
Tool Steel
O1 is a general-purpose oil-hardening tool steel — cheap, easy to heat treat with basic equipment, and dimensionally stable enough for short-run tooling.
Standards: DIN 1.2510 · AISI O1 · JIS SKS3 · GB 9CrWMn
Chemical composition compared (%)
| Element | 1.2067 | O1 |
|---|---|---|
| C | 0.95–1.10 | 0.85–0.95 |
| Si | 0.15–0.35 | 0.10–0.40 |
| Mn | 0.20–0.40 | 1.00–1.20 |
| Cr | 1.35–1.65 | 0.50–0.70 |
| W | — | 0.50–0.70 |
| V | — | 0.05–0.15 |
Properties compared
| Property | 1.2067 | O1 |
|---|---|---|
| Delivery condition | Annealed | Annealed |
| Hardness (hardened) | 58–64 HRC | 57–62 HRC |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Sourcing either grade?
Nasteel stocks both families from Shenzhen with EN 10204 3.1 mill certificates by heat number.
Ask for a quotationSee full data sheets: 1.2067 · O1. Substitution decisions for certified parts stay with the design authority.