BÖHLER W751 ISOBLOC is not a classic hot work tool steel, but a hardenable steel with an austenitic structure. Compared to quenched and tempered steels, the material does not generate its strength through a hardening structure with high carbon content and secondary hardening carbides, but through the precipitation of intermetallic phases from a tough austenitic matrix. BÖHLER W751 ISOBLOC is a chemically modified version of material number 1.2779 (X6NiCrTi26-15) and has proved to be ideally suited for many tool steel applications in cold and hot work (e.g., for extrusion liners) up to 750 °C and is therefore an economic alternative to superior nickel base alloys.
Highly creep and corrosion resisting, precipitation hardening austenitic steel. Modified A286 for extrusion tools.
| SEL | EN |
|---|---|
| ~1.2779 | ~X6NiCrTi26-15 |
| C | Si | Mn | Cr | Mo | Ni | V | Ti | Al | |
|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ≤ 0.20 | 1.40 | 15.00 | 1.25 | 25.00 | 0.30 | 2.80 | 0.25 |
