1.2767 vs 1.2738
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)
1.2738
Mold Steel
1.2738 is P20 chemistry upgraded with about 1% nickel for through-hardening of very large molds. It keeps hardness uniform from surface to core in thick blocks and polishes better than plain 1.2311.
Standards: DIN 1.2738 · AISI P20+Ni / 718 type · GB 3Cr2NiMo
Chemical composition compared (%)
| Element | 1.2767 | 1.2738 |
|---|---|---|
| C | 0.40–0.50 | 0.35–0.45 |
| Si | 0.10–0.40 | 0.20–0.40 |
| Mn | 0.20–0.50 | 1.30–1.60 |
| Cr | 1.20–1.50 | 1.80–2.10 |
| Mo | 0.15–0.35 | 0.15–0.25 |
| Ni | 3.80–4.30 | 0.90–1.20 |
Properties compared
| Property | 1.2767 | 1.2738 |
|---|---|---|
| Delivery condition | Annealed (also supplied prehardened) | Prehardened |
| Hardness | Up to ~52 HRC hardened; ~300–350 HB prehardened | 290–330 HB |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
| Toughness | Exceptional for a mold steel (4% Ni) | — |
| Tensile strength | — | 980–1150 MPa |
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 · 1.2738. Substitution decisions for certified parts stay with the design authority.