Hot Torsion Mobile Conversion Unit

Hot Torsion with High-Speed Thermal Capacity

The Hot Torsion Mobile Conversion Unit (MCU) adds world-class hot torsion testing capability to the Gleeble 3500 and 3800 Systems.

Capable of applying torque up to 100 Nm (50 Nm standard configuration), Hot Torsion Systems from Dynamic Systems are the first commercially available torsion systems to incorporate direct resistance heating.

Features Include:

Rapid, uniform direct resistance heating of samples
Heating of test specimens at any time during torsion
Rapid in-situ quenching of the test specimen at any point in the test (DR heating only)
Use air, water or mist for quench media
Apply controlled tension axially during torsion
Torsion tests can be conducted with full axial restraint or no axial restraint
High-speed hydraulic torque motor for rapid strain rate changes
Variable torsion coupler for higher acceleration speeds
Free coupler minimizes strain error during specimen loading
Optional specimen furnace available

Key Performance Specifications:

Tests may be performed in vacuum (10-2 torr), inert gas or air (Atmosphere tank is included, vacuum pumps are optional)
Temperature is controlled by a thermocouple attached to the fixed end of the specimen.
Specimen size:
- Gage length diameter: 6 mm to 10 mm diameter
- Gage length: 6mm to 50 mm
Longitudinal load cell with overload protection provides measurement of axial load on specimen
Torque cell with overload protection provides accurate torque measurements during test.
Axial load control provides combined stress states such as tension – shear and compression – shear.
A torsion free coupler minimizes acceleration times.
Optional quench systems can be used as in-situ quenching to accelerate cooling or to freeze microstructures of the specimen.
The Gleeble Control and Data Acquisition System is used to control the test and acquire test results. All software is Windows based. Variables include:
- Temperature program
- Actual specimen temperature (multiple channels)
- Axial force on specimen

For ordering information, please contact us at

info@gleeble.com or +1 (518) 283-5350.

CBECIMAT - November 24-28, 2024 - Fortaleza, Brazil

We are excited to attend the CBECiMat 2024 conference in Fortaleza this fall, where we’ll engage with leading experts in materials science and engineering. Join us from November 24 to 28 as we connect with academia and industry to explore the latest innovations in the field. Register here

ICACC - January 28 - 29, 2025 - Daytona Beach, Florida, USA

We’re thrilled to be attending the 49th International Conference and Expo on Advanced Ceramics and Composites (ICACC) in January 2024. Be sure to visit us at the event, where we’ll be unveiling an exciting new product that you won’t want to miss! Register here

Dr. Warren Poole

University of British Columbia

"We had to generate all the parameters and then to validate the predictions that the computer model made… The Gleeble played a central role in that project. We did austenite grain growth studies, double-hit compression tests to study recrystallization, and continuous cooling transformations, with and without compression."

Chihiro Kasamatsu

Material Evaluation Department Aichi Steel Corporation

“…we are concentrating on testing with the Gleeble to reduce costs in our forging production processes…”

Dr. John Bowker

Former Senior Research Scientist CANMET Materials Technology Laboratory (CANMET-MTL)

"The Gleeble is one of the most heavily used machines at our lab... We have used and continue to use it for a broad range of thermo-mechanical simulation procedures. These include: welding applied to shipbuilding, marine materials, offshore structures and pipelines; compression testing to characterize the flow stress behavior of steels and aluminum alloys: and in situ melting and solidification to understand the effects of residuals on hot ductility."

Dr. Hirowo Suzuki

Nippon Steel (retired)

“In my opinion, Dynamic Systems is the top company in this kind of test equipment… worldwide.”

Dr. Mahesh Chaturvedi, Ph.D., FASM

University of Manitoba, Department of Mechanical and Manufacturing Engineering

“We want to understand what the fundamental causes for thermo-mechanical fatigue are, so we use the Gleeble to apply load and temperature, sometimes in sync and sometimes out of sync. The Gleeble can keep going for days, executing the same program again and again... it gives us excellent reproducibility.”

Dr. Hans Peter Schmitz

ThyssenKrupp Stahl

“ In our labs, we do physical simulation… We try to reproduce as precisely as possible what is going on in the actual production lines. If you do it very carefully, you can transfer the result into the production lines, and you can use the results for building up numerical models."

Dr. Arnold Marder

Energy Research Center, Lehigh University

“What we are aiming at is intelligent processing. That’s where the Gleeble gives us a tremendous advantage. By allowing us to carefully simulate and model thermal and mechanical processes”

Dr. Leijun Li

Utah State University

"On the Gleeble we can not only control all the mechanical properties, but we’re in command of the thermal properties and the atmosphere. With the Gleeble, we can do complicated applications, watch what is happening, see the effect of temperature, and know how much energy is going in. It would take a lot more time and money to do it with equipment other than the Gleeble."

Dr. Brian Damkroger

Los Alamos National Laboratory

"Only the Gleeble is fast enough to allow us to physically simulate the thermal profile of electron beam welding”

Dr. David Matlock

Colorado School of Mines

"Flexibility is the key to our extensive use of the Gleeble. It helps us to get maximum productivity out of the work we do."

Dr. Luis A. Colembergue Klujszo

Gerdau Aços Especiais Piratini

"Through the capability of simulating large scale, expensive processes in a small scale, laboratory environment, the Gleeble has made it easier for Gerdau to improve products and processes. Furthermore, all the controls available in the equipment bring a whole lot of reliability to the results, making the conclusions very sound."

Tom Schambron

Bluescope Steel

"…world research and innovation are cornerstones of our business - the Gleeble is key to meeting the objectives of BlueScope. It assists in product development and improvement—such as trialling new steel grades, processing parameters, and so forth—and in tracking and solving of quality issues."

Damien Fabrègue

The Institut National des Sciences Appliquées (National Institute of Applied Science) de Lyon, Villeurbanne, France

"...this is the only piece of equipment that I can do everything with. I can always do what I want. It may take some time to optimize the work, but in the end, you can always run the experiment or do the simulation that you wanted to do."