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1650ºC Max. High Temperature Hydrogen Atmosphere Box Furnace, (8 x 8 x 8") - KSL-1700X-H2

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KSL1700X-H2 is designed for material synthesis under dry hydrogen up to 1650ºC. The furnace consists of high-quality alumina fiber bricks and Mo alloy heating elements with a heating chamber of 8" x 8" x 8", as well as a vacuum-sealed steel case with a water cooling jacket and an automatic H2 burning system. It is an ideal tool for preparing new materials that require a reducing atmosphere, such as phosphorous and Ti alloy.



Furnace structure
  • Double-layer stainless steel structure for maximum vacuum and safety
  • Water cooling front door and air cooling shell
  • Built-in pressure gauge, vacuum valves, and two gas float meters
  • Built-in H2 burning control system - if the controller detects no flame in the burner, the gas delivery valve will be shut down automatically    
Inside Chamber Size
  • Heated chamber: 200 x 200 x 200 mm (8 x 8 x 8 inch), 8 Liter
  • Energy-saving 1800 grade fibrous alumina insulation
  • High purity Al2O3 coating
  • Warning: One Al2O3 fibrous door block is included. You must place the door block in the front of the chamber to block heat radiation, otherwise, may damage the sealing ring at high temperature and cause hydrogen gas leaking
  • AC 208 - 240V single phase (50/60 Hz)
  • 7.5 KW
  • 30 Amp (50 Amp air breaker is required)


  • Continuous 1600°C
  • Max. 1650°C  (< 60min)
  • Accuracy: +/- 1°C
  • Heating Rate: 5°C/min
  • Thermocouple: two B type (control thermocouple and secondary alarm thermocouple)

Temperature controller

  • The main Temperature Controller is used for controlling the 30-segment heating program and provides the 1-level temperature alarm protection. 
  • Secondary Temperature Controller reads the temperature from the secondary B type thermocouple, monitors the temperature during all processes, and provides the 2-level temperature alarm protection.
  • The Eurotherm temperature controller is optional to provide +/- 0.1oC accuracy

Pressure Control 

  • The pressure sensor and pressure controller are installed. It reads the chamber pressure and controls the inlet and outlet gas valves respectively according to the pressure limit settings
  • The pressure control can be used to perform the following functions:
    • Purging
    • Pressure control
    • High and Low-pressure protection
  • The pressure controllable range: -0.06 to 0.03 Mpa. 

Heating Elements       

  • 6 sets of Mo coils heating elements are built-in and replaceable 
  • The heating element of the Mo coil is consumable parts which should be ordered separately if extra is required. (click the pictures left to order spare)
  • The heating element can be replaced by MsSi2 to run the furnace under oxygen and air up to 1700°C (order picture below right  to order spare)
  • Warning: Mo heating element cannot be used under air or oxygen at the temperature > 300°C
Gas Flow and Vacuum Valve
  • Two large flow meters (N2: 0~3.5L/min, H2: 0~3.5L/min) are installed on the front panel of the furnace.
  • One for purging Inert gas prior to introducing H2 gas
  • One for controlling H2 gas flow
  • One heavy-duty vacuum pump (CE certified) built-in bottom furnace to enhance the purging chamber.
H2 Gas Burning Control System
and Option Hydrogen detector
  • An ignition device already installed to incinerate flowing gas and detect burner temperature to ensure H2 burner is in working condition. If H2 does not burn properly, the controller will shut down the H2 gas delivery valve immediately
  • Warning: You must install a certified Hydrogen detector in the operation facility to alarm the hydrogen leaking accident. If you can not find it in a local store, please click the link below to order a hydrogen detector from us at an extra cost
  • Option Hydrogen detector to Enhanced safety for MTI Hydrogen Gas Tube Furnace
Water Cooling
A 58 L/min recirculating water chiller is installed for cooling furnace sealing flange. 

Net Weight

300 Kg

Overall Dimensions

  1200mm L × 850mm W × 1520mm H (without burner) and 2020mm H (with burner)

Shipping Weight & Dimensions

  • Two Pallets
  • 1,375 lbs, 54" x 44" x 89"
  • 320 lbs, 48" x 40" x 52"


  • One year limited warranty with lifetime support. (Consumable parts such as sample plates and heating elements are not covered by the warranty, please order the replacement at related products below


  • CE Certified
  • NRTL or CSA certification is available upon request at the extra cost

Application Notes

Attention: A free course of safety operation training at MTI field is required to purchase this furnace. A customer's side training is also available upon request at extra cost. If the users believe that they have sufficient experience and knowledge to handle the furnace in a dangerous or emergent situation, a liability release agreement must be signed at the purchase. MTI Corp. is not responsible for any damages caused by misuse without safety operation training. Any damages caused by the corrosive and acidic gases are not under the coverage of the MTI One Year Limited Warranty.

Demo Video and
Operation Instructions


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