BÖHLER W751
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.
Available Product Shapes
Melting Route
Airmelted + Remelted
Property Features
Highly creep and corrosion resisting, precipitation hardening austenitic steel. Modified A286 for extrusion tools.
Material Numbers
- SEL
- ~1.2779
- EN
- ~X6NiCrTi26-15
Chemical Composition
* Chemical Composition (Average %)
- C
- 0.02
- Si
- ≤ 0,20
- Mn
- 1.40
- Cr
- 15.00
- Mo
- 1.25
- Ni
- 25.00
- V
- 0.30
- Ti
- 2.80
- Al
- 0.25