Cromax – Premium chrome steel bars for hydraulic cylinders
Cromax is our well-known line of high-performance materials for hydraulic cylinders. Building on this expertise, our chrome steel bars and tubes are engineered for exceptional quality and consistency in piston rod applications. Ovako’s development of steel grades specifically suited for piston rod applications and the plating process puts us in a unique position to control the quality and consistency of the end-product. With Ovako as your partner, you can rely on more than 40 years of experience from working closely with hydraulic cylinder manufacturers to refine the product.
Ovako is one of the largest producers on the market. Our three production units in Sweden, France and Italy are the foundation for our unmatched redundancy and logistics in delivery. Our offering extends to professional technical support and customer unique solutions in cut-lengths, packing and inventory management.
Prior to delivery, all chrome steel products are controlled to ensure optimal micro-crack distribution with high crack density. These properties, together with closely controlled pre-treatment, plating process, and finishing procedures, guarantee superior corrosion resistance. Ovako’s quality assurance system includes a thorough final inspection of every single product as well as verification in salt-spray testing of all combinations of steel heat, rolling operation, and plating batch.

Chrome steel wear resistance for maximum durability
Abrasive wear on the rod due to contamination particles from both outside and inside the hydraulic system leads to direct oil leakage and secondary damage on the sealing system, which is unacceptable from an environmental and productivity point of view. The consistency in the chrome steel process and our extensive quality control system ensures minimal variation in chrome thickness and hardness, which are the most significant parameters from this perspective.
Optimized chrome steel surface for sealing system lubrication
Chrome steel products feature optimized surface roughness, micro-crack distribution, and structural integrity, ensuring proper sealing system lubrication for enhanced hydraulic performance and longevity.
Advantages of Cromax® - Chrome Steel and NiKrom®
- In-house production facilitates unmatched quality and consistency
- Optimized to match the requirements in mechanical properties
- Every single production batch is verified in salt-spray testing
- High consistency and quality ensure well-functioning hydraulic systems
Chrome steel endorsements from our partners
”In our opinion, Cromax 280X is one of the few hardchromed bars in the world that meets the highest standards in terms of corrosion-resistant surface treatment and the quality of the steel grade.”
Peter Blomquist, Supply Manager, PMC Cylinders

Chrome Steel – The ultimate solution for hydraulic cylinder applications
Our chrome steel ranges are specifically designed for hydraulic cylinders. With in-house steel production and optimized chemistry, this material ensures superior structural integrity, wear resistance, and enhanced corrosion protection.
With over 40 years of experience, Ovako ensures that every chrome steel product delivers exceptional reliability and performance for hydraulic applications. Contact us today for custom solutions tailored to your specific needs!
Steel Navigator - Find the right steel for your application
Steel Navigator contains a selection of useful tools such as Material Data Sheets, Machining Cost Calculator, Heat Treatment Guide, Piston Rod Predictor and more.




