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1200C Max. 5-side Heating Muffle Furnace (20x20x20

1200C Max. 5-side Heating Muffle Furnace (20x20x20") w/ Optional Alloy Chamber - KSL-1200X-MAX

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KSL-1200X-MAX is a 5-side heating muffle furnace (20x20x20")  with a working temperature of up to 1200 degrees. The 5 side heating chamber with freestanding heating elements provides better temperature uniformity, a higher heating rate, and reduces the downtime of heating element replacement.  It is a perfect instrument for sintering and annealing large quantities of metals and ceramics. The optional refractory alloy chamber provides an economical approach to anneal samples in a controlled atmosphere, limit cross contaminations, and especially to remove binders in ceramics without contamination.


  • Power: 12 kW, three-phase, 208-240VAC (40 A power outlet is recommended)
  • Other voltage ratings are available upon request. 
  • A power cord with a plug is included. 
Heating Chamber 
  • Size:                    20" x 20" x 20"  ( 500 x 500 x 500 mm)
  • Capacity:             125 liters 
  • Heating element: Freestanding Ni-Cr-Al  wire
  • Thermocouple:    K type
  • Double-sided alloy casing with cooling fans.
    The surface temperature of the furnace is less than 40°C @ 1000°C in the furnace. 
Working Temperature
  • Working Temperature:  1200 ° C continuously without an alloy chamber
    1000°C continuously with an alloy chamber
  • Heating rate:                 10°C/min (recommended)
  • Stability:                        ±1 °C
Temperature Controller
  • The FA-YD518P-AG temperature controller is included.
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling, and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • Default RS485 PC communication port
  • Eurotherm temperature controller with +/- 0.1 accuracy is available at the extra cost
Refractory Alloy Chamber (Optional)

  • 310SS alloy chamber with a hinged door
  • Size:         415 D × 372 L × 372 W (mm)
  • Capacity:  57.4 Liter 
  • 12.7 mm OD gas inlet tube is at the back of the furnace
  • 30 mm ID (40 mm OD) gas outlet tube is connected to the top of the furnace
  • K type thermal couple is inserted into the inside chamber for temperature control
  • Max. working Temperature:  1000°C
  • Alumina fiber packing is installed as the door sealant. 
  • Note: 
    • This is not an airtight chamber. However, it prevents the majority of vapors
    • For oxygen-sensitive material, suggest use 5%H2 + 95% Ar to keep the sample from oxidation 
Product Dimensions
  • 930×890×1480 mm (L×W×H)
Net Weight
  • 330 Kg
  • One-year limited warranty with lifetime support.  
  • ATTENTION: Any damages caused by use of corrosive and acidic gasses are not covered by MTI One Year Limited Warranty.
  • CE Certified
  • NRTL  (UL61010) or CSA certification is available upon request at extra cost.
Operation Video

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