HTO-39

for material testing in air and a heating zone length of 30 cm

The high-temperature furnace HTO-39 is characterized by an excellent temperature distribution, which is achieved by its 3-zone version. Each zone can be controlled independently, enabling precise temperature control, especially when an appropriate temperature controller is used.

The furnace is made of a lightweight, thermally insulating and asbestos-free Aluminum silicate wool more energy efficient. .

The housing of the furnace is made of stainless steel, which increases the longevity of the appliance.


In addition, the furnaces are already equipped to accommodate a length change sensor (HT extensometer) and a diametral HT extensometers through the cross slots at the front and rear. This makes it easy to integrate measuring devices for monitoring material changes.

  • Double-walled construction – convection cooling reduces the outside wall temperature.
  • The furnace is placed on a multi-support so that it can be fully opened.
  • The MSRA regulator uses transformers to provide the required high current and reduce the voltage. Thanks to the lower voltage, the oven's lifespan is extended.
  • Folding furnace. Fast and easy sample loading of samples possible.
  • 1 double-cross slot at the rear for additional diametrical extensometers.
  • Durable embedded horizontal heating elements.
  • Furnace bore optimized for a wide range of adapters and test fixtures without causing large heat losses.
  • Lightweight and asbestos-free insulation material to minimize power consumption.
  • Stainless steel housing.
  • All electrical connections are made to the MSRA controller.
  • Front cutout allows access to high-temperature extensometers.
  • Uniform temperature gradient through 3 independent heating zones.
  • Five feed-throughs for thermocouples, one on the right and one on the left, three of which are in the middle heating zone.
  • Movable thermocouple arrays for temperature are available as an option.
  • Adjustable stainless steel latches for easy locking of the furnace holder during the test.
  • Upper and lower end plates with tie rod cutouts are manufactured to fit the test device.
  • OFF safety switch when opening the furnace.
  • 2 extensometer openings:
    Front with longitudinal slot with front viewing window
    Rear with cross-slot – for diametral extensometer.
  • With front window as standard.

  • Heating zone length of 300 mm.
  • Suitable for high-temperature tensile tests, compression tests, cyclic fatigue tests and fracture mechanics tests.
  • For tensile specimens B from M6 to M20.
  • Load rods for tensile specimens up to M20 available.