The strongest stainless steel bolt in the world
BUMAX ULTRA 159 achieves its super high strength of over 1,350 MPa from unique strain hardening and precipitation hardening manufactured using Nobel Prize winning Quasi-Crystalline Precipitate technology. This method has been specifically designed for applications where ultra-high strength is required.
The very high strength to weight ratio in combination with good formability and ductility make the grade a very attractive alternative to other lightweight materials, e.g. Titanium. BUMAX ULTRA 159 also has a corrosion resistance comparable with 316L (A4) and can be used at service temperatures between -50 and 400°C with retained mechanical properties.
BUMAX ULTRA 159 offers excellent strength properties compared with other high-strength fastener materials and can potentially offer a unique solution to some extremely challenging applications.
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Discuss more complex requirements with our technical team
Stainless steel fasteners with enhanced properties
BUMAX ULTRA 159 fasteners outperform standard A4-80 in terms of:
Ultra-high strength
Corrosion resistance
Excellent fatigue properties
Low thermal expansion
Excellent relaxation properties
These enhanced properties are achieved by using premium steel that is produced to stringent BUMAX specifications by the highest quality European steel mills. Our expert fastener manufacturing processes ensure a high-performance product that is extremely reliable.
Fasteners for demanding applications
BUMAX ULTRA 159 is typically used to replace high strength carbon steel fasteners in critical applications with extreme requirements on strength. The ultra-high strength of BUMAX ULTRA 159 provides opportunities to downsize and design new lightweight options at lower cost.
Standards
- UNS: S46910
Overcoming customer fastener challenges
Introducing our largest ever investment in advanced fastener testing capabilities
Order BUMAX® Ultra 159
All fasteners in BUMAX ULTRA 159 are custom made to meet the requirements of individual applications and can be delivered with different mechanical properties. Contact us to find out how BUMAX ULTRA 159 fasteners can benefit your applications.
