Tensile specimen sheet metal

Produce rationally <3 minutes and without changing of material characteristics!

Since 1970 we have been the first address for machines for the preparation of tensile specimens from sheet metal

Punches | Punching tools | Tensile specimen grinding machines

In the limited market of sheet metal tensile specimen preparation machines, we have a market share of approx. 80 %. For good reason: we know what we are talking about and have the best know-how for this application. There are a number of suppliers who build punches and punching tools. But it's not about getting a hole in a sheet metal, it's about producing a specimen in such a way that the finished tensile specimen complies with the standard and the results are not grossly incorrect due to poor manufacturing. Because even if the world's best tensile testing machine is used:

The results of a tensile test can only be as reliable as the test specimen allows.

You invest 50,000 or even 100,000 € in a first-class tensile testing machine and think: Finally we can determine the quality of the sheets correctly? The sample preparation is often neglected in a damaging way and the samples are clearly manufactured incorrectly. Should you really do a tensile test if you don't know whether the results deviate 1% or 30% from the actual material characteristic?
Read here (background knowledge) why wrong results can occur and which methods are suitable: Advantages and disadvantages of different manufacturing methods.

No important company is missing from our delivery list. One customer described our supplier list as the "Who's Who" for products made of sheet metal: steel producers, rolling mills, galvanising plants, semi-finished products, end processors, car manufacturers, automotive components:

  • and another 100 companies in Germany, Europe and worldwide

From the sheet metal plate to the undoubtedly high-quality sheet metal tensile specimen in less than 3 minutes!  Our punches were specially developed for specimen production in materials testing. And what no other company offers: We adapt our equipment exactly to your needs: special construction is our standard. Our experience of over 50 years has led to more solutions than we are prepared to present on our website. Others offer punching and stamping tools - we offer solutions that save you work, are cheaper and the quality of the tensile test is unsurpassed.

Because one thing is certain: several attempts have already been made to copy our sample grinding machine. So far, all manufacturers - even renowned companies - have failed in the task and no longer offer this product due to constant customer complaints.

By limiting the technology to this application only, these punches could be designed so cheaply that even used punches (which have a larger stroke and greater flexibility ...) are often more expensive than our new machines.

Over the last few years, there has been a trend towards significantly increasing the material strength of sheet metal through the use of new alloys. Accordingly, the punching force required to be able to punch higher-strength sheet metal has also increased. Today, a punch with 1,000 or 1,200 kN (100 or 120 t) is the standard.
For some years now, the automotive sector has required a solution to the problem of producing tensile specimens from press hardened / hot formed / tailored blanks / hot deformed sheet metal. We also offer special solutions for this which are already used by a large number of companies - ask us ...

ince not all sheet thicknesses can be punched with only one tool (limits: 0.05 - 10 mm thickness), several sheet thickness ranges, which are individually designed to customer requirements, are necessary. For higher capacities, we used to design and supply punches in a closed design (from 1,000 kN - 100t). By redesigning and testing these constructions with the Fenite Element Method, optimised designs could be developed. The currently largest C-shaped punching machine now has a punching force of 2,200 kN (220 t) and offers the advantage of being able to punch from a sheet of unlimited size.




advantages / disadvantges

milling laser water jet blanking

Schleifkopf Probenschleifmaschine

  • water jet: rough surface
  • laser: heat effecting
  • manual milling >long production time
  • CNC milling long production time, high investment