New module: Piston Rod Selector

Ready for the New Year, we have just carried out a complete update of the Ovako Steel Navigator. And among the many new features is a brand new module – our Piston Rod Selector.

Our experts have developed Piston Rod Selector to help you compare how different steel grades used in piston applications will resist buckling. This is important because hydraulic cylinders are usually subjected to compressive axial loads that cause them to fail by buckling.

Selecting a higher strength steel such as our Cromax® bars and tubes will give better resistance to buckling. And also opens up new possibilities to downsize piston rods to help reduce both weight and cost. With Piston Rod Selector you can see exactly what difference it can make, as the tool enables you to compare Cromax steel grades with the most commonly used standard grades for piston rods.

You can decide to use the diameter of an existing rod as the input to calculate what diameter would be required with an alternative steel grade to achieve the same safety factor. Alternatively, you can use your maximum load and desired safety factor to calculate the minimum rod diameter for different steel grades.

The list of alternative materials is extensive. But if the material you are interested in is not available in the list, you can still input its relevant mechanical properties manually.

About Us

About OvakoOvako develops high-tech steel solutions for, and in cooperation with, its customers in the bearing, transport and manufacturing industries. Our steel makes our customers’ end products more resilient and extends their useful life, ultimately resulting in smarter, more energy-efficient and more environmentally-friendly products. Our production is based on recycled scrap and includes steel in the form of bar, tube, ring and pre-components. Ovako has around 3,000 employees in more than 30 countries and sales of approximately EUR 1000 million. Since March 2019, Ovako is a subsidiary of Sanyo Special Steel and a member of Nippon Steel Corporation group, the third-largest steel producer in the world with more than 100,000 employees globally and a revenue of approximately EUR 50 billion. For more information, please visit us at, and