Mubea Precision Steel Tubes

Steel is a fascinating material - robust and malleable at the same time. Both the material composition and the versatile manufacturing processes are decisive for our quality tubes.

The unique material expertise in plastics and steel under one roof represents know-how for the future and positions Mubea Präzisionsstahlrohr AG as the perfect technology partner.

Successful use of the high-strength grade 40MnCrB5 in series production

A long-standing customer approached us with a special challenge for a tube section as a carrier tube that was used as part of a camshaft with cylinder deactivation: In addition to high demands on dimensional precision, the customer expected a tube with high strength and hardenability as well as high wall thickness including wall reduction on one side.

To meet the high strength and hardenability requirements, we were able to develop a high-strength grade 40MnCrB5 for this application in collaboration with our pre-material suppliers.

Thanks to the good cooperation, we were able to develop the mechanical properties required by the customer for a specific customer requirement and thus develop and implement geometric requirements for series production.

The automotive industry is changing. The demand to reduce CO2 emissions in order to improve air quality and protect the environment is leading to new requirements with regard to the lightweight construction of automobiles.

Lightweight construction, as a synonym for weight or mass reduction in vehicles, is one of the greatest challenges for automobile manufacturers and suppliers. Mubea Präzisionsstahlrohr AG offers new possibilities with high-strength materials. 

By using air hardeners or heat-treatable materials, parts and components can be made lighter while retaining their physical properties. 

Optimized engineering of the tubes increases production efficiency and reduces overall production costs (total cost reduction).

Thanks to lifting columns, furniture can be conveniently adjusted in height and thus adapted to individual ergonomic requirements. The telescoping capability places special demands on the steel tubes, as the stepless and noiseless lifting and lowering of hospital beds or office desks can only be achieved with the tightest manufacturing tolerances, different wall thicknesses and uniform surface treatment. Mubea produces tubes that meet these requirements.

Tube requirements:

• individually selectable dimensions and shapes
• high dimensional and shape accuracy, customized shape and position tolerances
• customized design of the corner radii
• high and consistent surface quality
• minimized surface imperfections (adhesions, scratches, dents,...)
• perfect flatness in the surfaces for optimum height adjustability
• good sliding properties

The tightest tolerances and homogeneous mechanical properties allow manufacturers maximum design freedom and guarantee productivity and reproducibility of the various manufacturing processes. In addition to the relevant painting processes, radiator tubes from Mubea have also proven themselves for direct chrome plating in particular. For the end customer, this means a robust, durable product with optimum surface properties.

Tube requirements:

• good forming behavior
• very good weld seam quality
• homogeneous structure in weld seam and base material
• excellent weldability
• good joining behavior (welding/soldering)
• minimized variations in wall thickness and external dimensions
• excellent surface condition
• good chrome plating and paintability
• minimized surface imperfections (adhesions, scratches, dents,...)