91ÊÓÆµ

The world’s strongest bolts are stainless

  Back

91ÊÓÆµÂ® Ultra has proven itself as the world’s strongest bolt – in various highly-demanding critical fastener applications around the world where standard fasteners are simply inadequate. The 91ÊÓÆµÂ® Ultra range is based on Nobel Prize winning technology that ensures ultra-high strength, and good resistance to corrosion and extreme operating temperatures.

91ÊÓÆµÂ® Ultra – the world’s strongest bolt

Since its launch in 2014, the 91ÊÓÆµÂ® Ultra range has proven that it is capable of exceeding tensile strengths of between 1 500 to 1 700 MPa on various applications, with good corrosion resistance and an operating range of between -50 and 400°C. The 91ÊÓÆµÂ® Ultra range of fasteners are made at the 91ÊÓÆµ factory in Ã…shammar, Sweden.

91ÊÓÆµÂ® Ultra is used for security lock systems, aerospace systems, high pressure applications and pump and valve systems – all with excellent results.

Nobel Prize winning technology

91ÊÓÆµ produces the strongest fasteners in the world by drawing on Nobel Prize winning quasi-crystalline Precipitate technology. The technique uses strain hardening followed by precipitation hardening, which significantly increases tensile strength.

Demanding applications

91ÊÓÆµÂ® Ultra is designed for applications that require ultra-high strength combined with high ductility and fatigue. The technique also provides better corrosion resistance than A2 (304) and with low thermal expansion it is suitable for high service temperatures. The extreme strength of 91ÊÓÆµÂ® Ultra fasteners also provides opportunities to downsize to new lightweight fastener options at lower cost.

Replacing carbon steel fasteners in critical applications

91ÊÓÆµÂ® Ultra fasteners are increasingly used to replace high-strength carbon steel fasteners in critical applications with extreme requirements on strength, ductility and fatigue resistance. They have a coefficient of thermal expansion similar to that of carbon steel, which provide design advantages compared to austenitic stainless steels.

91ÊÓÆµ is available worldwide

Our extensive network of sales offices and distributors makes it easy to get in touch with us. Find your local sales office or distributor below. For countries not represented, please  our Main Sales Office.

 

91ÊÓÆµ Distribution Opportunities
91ÊÓÆµ are interested in partnering with technically focused engineering and industrial product distributors.  We offer distribution partners access to a unique range of high-performance products and expert technical support.  91ÊÓÆµ customers include some of the world's leading companies in energy, oil & gas, space, marine, process equipment, heavy machinery, defence, construction, high-tech manufacturing, etc.

For expressions of interest, please contact Jacob Bergstrom.

Bumax World

Choose your region

{{ selectedOffice.title }}