Laboratory Furnaces

High Temperature Laboratory Furnaces

Lab furnaces by CM Furnaces feature temperatures up to 1800°C and sealed designs that support atmosphere control necessary for advanced processes including heat treating, sintering, annealing, glass or ceramic firing, calcining, and most reductive and reactive processes.Many standard box chamber sizes from 48 to 4096 cubic inches with larger sizes customizable.

Lab Furnaces and Kilns by CM Furnace

CM Rapid Temp Series laboratory furnaces and kilns in various configurations.Configurations of CM Laboratory Furnaces include:

  • Front Loading Box Furnace (FL)
  • Bottom Loading Box Furnace (BL)
  • Thermal Cycling Box Furnace
  • Gas-Sealed Box Furnace (FL)
  • Horizontal Tube Furnace (HTF)
  • Vertical Tube Furnace (VTF)

Additionally CM furnaces maintains a strong custom engineering team capable of modifying your lab furnace to highly individual specs, or adding common options like chimney’s, view ports, gas injectors, or advanced thermal control capabilities.

CM Laboratory Furnaces At A Glance

The following table summarizes our family of Lab furnaces and how to choose between them.

Furnace Type Temperature Range Atmosphere Package* Model
Box 1200°C (2200°F) Air CM-1200
Tube 1200°C (2200°F) Air, Inert CM-1000K
Tube 1550°C (2822°F) Air, Inert CM-1000SC
Tube, Diffusion 1300°C (2372°F) Air, Inert, Hydrogen, Other CM-1300
Tube, Gradient 1700°C (3100°F) Air CM-1400
Tube, Box, Custom 1600°C (2900°F) Air, Inert CM-1600 Series
Tube, Box, Custom 1700°C (3100°F) Air, Inert CM-1700 Series
Tube, Box, Custom 1800°C (3270°F) Air, Inert CM-1800 Series

*Atmosphere packages are an add-on to the basic furnace model

For all furnace purchases it is best to consult with one of our experts directly. Important specifications to consider when searching for a laboratory furnace include the process temperature, control requirements, dimensions of sample and inner dimensions of chamber or tube, and the pressure range.

Users for the CM series of Lab Furnaces:

Over the 60 years CM Laboratory furnaces have been manufactured, they have gained wide acceptance in a diverse set of industries and applications. Most of these customers are distinguished by their desire for truly high quality equipment that lasts a long time and requires very little maintenance.

  • US National Laboratories like Los Alamos, Oak Ridge & Savanna River national labs and many others.
  • Both Government (NASA) and private research facilities.
  • University science laboratories
  • Preproduction manufacturing test.
  • Small scale production environments.
  • Glass production
  • Ceramics engineers and scientists

Why CM Lab Furnaces?

CM Furnaces has made two key decisions in its history that define its products: we decided to keep all our design and manufacturing in the USA where we can insure tight quality control; and we kept our focus on the technical performance and quality of our furnaces despite the onslaught of cheap, low quality imported lab furnaces, often repackaged and sold by US companies as their own.

Our strategy has paid off and over our 60 years in business,the CM Furnace brandhas established itself as the “Cadillac manufacturer” of lab furnaces for serious scientific research and light production work. All of our furnaces provide advanced features and a “no-shorcuts” design mindset making them quality standouts among all lab furnaces manufactured today. When you choose our furnaces it’s because quality, accuracy, performance, low maintenance, reliability, and a low lifetime cost of ownership matter to you.

All our Lab Furnaces are capable of:

  • Fully programmable ramp and soak control
  • Highly uniform temperature control with no hot spotting, even in larger chamber sizes
  • Highly reliable, proven designs using only premium components. Our design emphasis is performance and long life, while maintaining excellent overall value.
  • Off the shelf configurations including front loading, bottom loading with elevator.
  • Options tailored for your process including view ports, chimney’s, gas injectors, fully sealed chambers, more advanced or customized electronic controls, etc…

In most models, both horizontal and vertical models are available for virtually any requirement in single or multi-zone configurations. Custom designs including tilting and rotating systems, atmosphere and vacuum packages, and specialized control systems are offered. The best of these furnaces incorporate a graded insulation package using high purity alumina fiber. These furnaces will not hot spot at high temperatures and are resistant to degradation. The rugged steel shell is hinged for easy access inside the furnaces and you can feel the quality and weight of these materials as compared to cheap offshore imports. If past history is any judge, It will likely be many years or even decades before you call us for issues related to the wearing out of seals or the breakdown of core elements of our furnace.

Before you buy any lab furnace, you owe it to yourself to see what CM furnaces has to offer. Please discuss your needs with one of our furnace experts at (973) 338-6500

1000 SERIES

Tube Furnace for Laboratory by CM FurnaceTube furnaces to 1200°C (2200°F) featuring lightweight fiber insulation and separate half round ceramic plate heaters. Standard construction includes a rugged hinged steel shell, unheated vestibules and single or multi-zone configurations, as well as mounting brackets for either horizontal or vertical operation.
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1200 SERIES

Retort furnace for laboratory use by CM FurnaceBox furnaces to 1200°C (2200°F) featuring alumina fiber insulation and separate ceramic plate heaters on four sides for unparalleled temperature uniformity . Ruggedly built for reliability and long life. Ideal for use in the laboratory or for small production. Standard air operation or available with a high temperature metallic retort for inert and hydrogen atmosphere applications.
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1300 SERIES

1300seriesDiffusion tube furnaces to 1300°C (2372°F) featuring lightweight fiber insulation and a continuous heavy gauge element winding. Standard construction features a round stainless steel outer shell and end caps. Single and multi-zone configurations offered along with universal mounting pads for horizontal or vertical operation.
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1400 SERIES

main_1400Gradient tube furnaces to 1700°C (3100°F) featuring lightweight fiber insulation and a platinum alloy element winding. All 1400 Series furnaces include polished stainless steel shells and end caps as well as high purity recrystallized alumina tubes. Selective shunting provides control to allow gradient profiles for particular applications. Three temperature levels are offered including 1425° (2597°F), 1540°C (2804°F) and 1700°C (3100°F).
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1600 SERIES

CM Box Furnace 1600Tube, box and custom configuration furnaces with a maximum continuous operating temperature of 1600°C (2900°F) in air. The 1600 Series utilizes high purity alumina fiber insulation and Kanthal molydisilicide heating elements. Ideal for rapid heating and cooling rates and available in gas-sealed configurations for inert atmosphere applications to 1500°C (2730°F).
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1700 SERIES

1700 GSTube, box and custom configuration furnaces with a maximum continuous operating temperature of 1700°C (3100°F) in air. The 1700 Series utilizes high purity alumina fiber insulation and Kanthal molydisilicide heating elements. Ideal for rapid heating and cooling rates and available in gas-sealed configurations for inert atmosphere applications to 1600°C (2900°F).
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1800 SERIES

1812FL-GS-with-retortTube, box and custom configuration furnaces with a maximum continuous operating temperature of 1800°C (3270°F) in air. The 1800 Series utilizes high purity alumina fiber insulation and Kanthal molydisilicide heating elements. Ideal for rapid heating and cooling rates and available in gas-sealed configurations for inert atmosphere applications to 1700°C (3100°F).
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