1.2767 vs L6
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.
1.2767
Mold Steel
1.2767 is a 4% nickel mold and die steel with outstanding toughness and through-hardening in thick sections. It is chosen for large, intricate molds and dies that would crack in leaner steels.
Standards: DIN 1.2767 · AISI 6F3 type (near) · GB 4CrNi4Mo (near)
L6
Tool Steel
L6 is a nickel-chromium oil-hardening steel prized for toughness in large tools. The nickel content deepens hardening and keeps big sections from going brittle.
Standards: DIN 1.2714 (family) · AISI L6 · JIS SKT4 (near) · GB 5CrNiMo (near)
Chemical composition compared (%)
| Element | 1.2767 | L6 |
|---|---|---|
| C | 0.40–0.50 | 0.65–0.75 |
| Si | 0.10–0.40 | 0.10–0.50 |
| Mn | 0.20–0.50 | 0.25–0.80 |
| Cr | 1.20–1.50 | 0.60–1.00 |
| Mo | 0.15–0.35 | ≤0.50 |
| Ni | 3.80–4.30 | 1.25–2.00 |
Properties compared
| Property | 1.2767 | L6 |
|---|---|---|
| Delivery condition | Annealed (also supplied prehardened) | Annealed |
| Hardness | Up to ~52 HRC hardened; ~300–350 HB prehardened | — |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
| Toughness | Exceptional for a mold steel (4% Ni) | Very high (nickel-bearing) |
| Hardness (hardened) | — | 50–58 HRC |
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: 1.2767 · L6. Substitution decisions for certified parts stay with the design authority.