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FAQ – Freequently Asked Questions

Changes coming soon

Here you can find answers to the most important questions.

What can be welded?

There are almost no limits to what types of materials can be welded together. Often our customers are having parts welded from a variety of stainless and mild steels. Whether it is Inconel, Duplex or 316L to i.e. mild steel or maybe bronze, take a look at our materials combination chart for more info.

Who supplies material?

We can do that. We cut most materials for our customers’ parts. However, when welding for example hydraulic piston rods our customers supply the parts and we weld. Contact us for more information.

Does the heat harden the materials?

The working temperature of the friction welding process is around 1000°C and no discernable hardening takes place.


We understand the modern demands of traceability. That is why we can supply certificate 3.1(EN 10204:2004). If you have more questions, send us an email

How to design for friction welding

We understand that friction welding might not be something everyone knows how to work with. That is why we have created a design manual you can use when ordering a quote.
Download the design manual by clicking the button

Tips and tricks

In this section we have gathered information to help you make informed decisions when working with friction welding. The tips & tricks can guide you to the best choices in material selection and process requirements.


The welds produced with rotary friction welding offer strong, non-porous bonds that are ideal for the food and pharmaceutical industries as well as in heavy duty applications.

With friction welding, two parts are sat opposite each other, one being stationary, the other rotating. The rotating part is pressed to the stationary part and the friction from the rotation plasticises the material. The force of the rotating part pushes excess material (burn-off) out of the weld and creates flashing. All impurities and oxidation from the surface of the material ends up in the flashing, giving the friction weld a clean, strong bond with no additives or gasses.

This additive-free process makes it a safe process for the worker and cost effective for the customer.

Material choices

When utilizing rotary friction welding, one of the many benefits is flexible material choice.

Friction welding offers welds of dissimilar materials often not producible with conventional welding processes. Whether it is welding bronze to steel, aluminum to titanium, or most often stainless steel to mild steel, we have the capabilities.

Our customers enjoy this flexibility, as it offers cost savings. Designers will use only the most precious materials in the places needed, thereby limiting material costs.

Cost saving

As described above, friction welding offers many cost saving attributes.

Dimensional flexibility, i.e. not having to machine parts from bigger raw material than needed, especially in valves and pump shafts. Most of our parts are welded close to the finished dimensions, thereby decreasing machining time in later processes.