XSH® – L605® - Haynes25® - UNS R30605
Cobalt-Chromium according to ASTM F90 – ISO 5832-5
Description
The cobalt-based super alloy XSH® has excellent corrosion resistance and high mechanical properties. The grade has excellent corrosion resistance, is biocompatible and has very good high temperature resistance (up to 950°C).
Stainless has qualified European and American sources in stock and a range of diameters to suit your processing needs. This product can also be made to measure or cut into slugs by our service centres.
Each material is delivered with its producer’s certificate of origin in order to guarantee you total transparency and complete traceability.
Main applications
Due to its recognised biocompatibility in the medical field, the grade is used in the manufacture of implants (prostheses, etc.) obtained by machining. Other fields of application include aeronautics, chemistry, etc.
The material is available in the annealed state. Wire and strip can be supplied in the hardened condition.
Metallurgy
The manufacturing processes combined with the transformation processes make it possible to obtain a homogeneous microstructure of the face-centred cubic type with a fine grain of at least index 6. The grade is generally produced by vacuum melting followed by remelting, which makes it very clean and homogeneous.
The microstructure in the annealed state is shown in the following figure:
Machinability
Forgeability/Usability
The grade can be hot forged in the 1100/1200°C temperature range. Machining of this grade requires suitable equipment and tools. TIG, MIG, electron beam or resistance welding is also possible on this grade.
Polishability
The high level of inclusionary cleanliness and the homogeneity of the microstructure of this grade allows optimum polishing.
Heat treatments
Annealing can be carried out in the 1170-1230°C temperature range to soften the grade and dissolve the carbides. However, this treatment must be kept under control so as not to degrade the quality of the microstructure and the grain size. In the work-hardened condition, the grade can also be aged between 370°C and 600°C.
Corrosion resistance
The grade is highly resistant to general corrosion and also to pitting due to its high chromium and molybdenum content combined with its low inclusion rate. The grade also has very low susceptibility to hydrogen embrittlement and hot oxidation.
Standard Sizes
3m round bars in annealed condition – Surface ground or peeled
Sheet – Wire – Strip