Materials Testing
    High Temperature Universal OvensHigh Temperature Universal Ovens

High Temperature Universal Ovens

  • Grieve - AA-1050, AA-1250, AF-1050, AF-1250 and more
  • Heat chamber temperature controller on 1250⁰F models to limit heating element temperature
  • Motor control push buttons and on-off heat switch
  • LED pilot lights

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Front-to-back horizontal air flow accommodates virtually any oven loading without restricting air passage.

Work can be shelf loaded or placed directly on the optional reinforced work space bottom. Designed for annealing, sintering, hardening or any other application where a dependable source of heated air with higher temperatures is required.


  • UL Listed Control Panel
  • Meets the Requirements of the Following Standards:
  • NFPA 86 (Standard for Ovens and Furnaces)
  • NFPA 70 (National Electric Code)
  • FM (Factory Mutual)
  • OSHA


  • When processing combustible material fire protection should be considered
  • Processing flammable solvents or vapors requires forced exhaust to provide safety ventilation. 

Safety Equipment

  • Adjustable manual reset excess temperature interlock to turn off heat on malfunction of main temperature controller
  • Separate heating element control contactors to turn off heat on malfunction of main control contactors
  • Recirculating blower air flow safety switch to turn off heat on loss of recirculated air flow
  • Electrical interlock shuts off heat if power to recirculating blower is interrupted


  • Digital temperature controller
  • Heat chamber temperature controller on 1250⁰F models to limit heating element temperature
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)


  • 208 volt, 230 volt or 460 volt, 3-phase, 60 HZ – other input power available
  • All welded construction
  • Durable, electrically isolated, Incoloy tubular heating elements
  • Heating elements located in heat chamber to prevent radiant heating
  • High pressure stainless steel recirculating blower
  • Adjustable fresh air intake and 4” diameter exhaust outlet damper
  • Channel shelf supports prevent shelves tipping
  • Insulated with 2” of refractory ceramic fiber and 10 lbs per cubic foot density rockwool insulation
  • 16 gauge 304 stainless steel interior with stainless hardware
  • Aluminized steel exterior with Trilite Green enamel finish
  • Brushed stainless steel control panel face
  • Exceptionally heavy duty doors, hinges and door frame with explosion venting latches
  • Dual fiberglass door gasket with stainless steel spring insert; one gasket seals to inside door surface and second seals to outer oven face
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • Fully assembled and factory tested for temperature uniformity


Standard & custom-made Grieve ovens in action

*** CAUTION:  Ovens processing combustible material are required by National Fire Protection Association 86 Standard for Ovens and Furnaces (NFPA 86) to have a fire suppression system.  If flammable solvents or vapors are present in an oven, OSHA requires conformance with NFPA 86 Class A Oven requirements.  A powered forced exhauster and other non-standard safety equipment must be added.

AA-105024" x 24" x 24"851" x 60" x 45.5"1,050°F600½12Not Rated10"±0.3%±10°F86Not Available2,275 lbs
AA-125024" x 24" x 24"855" x 64" x 49.5"1,250°F1,000¾18Not Rated12"±0.3%±13°F88Not Available2,705 lbs
AF-105024" x 36" x 24"1251" x 72" x 45.5"1,050°F1,000112Not Rated10"±0.3%±10°F94Not Available2,580 lbs
AF-125024" x 36" x 24"1255" x 76" x 49.5"1,250°F1,200118Not Rated12"±0.3%±13°F96Not Available3,085 lbs
AB-105036" x 36" x 36"2763" x 70" x 57.5"1,050°F1,000118Not Rated10"±0.3%±10°F100Not Available3,265 lbs
AB-125036" x 36" x 36"2767" x 74" x 61.5"1,250°F1,200124Not Rated12"±0.3%±13°F112Not Available4,030 lbs
AG-105036" x 48" x 36"3663" x 82" x 57.5"1,050°F1,200124Not Rated10"±0.3%±10°F113Not Available4,095 lbs
AG-125036" x 48" x 36"3667" x 86" x 61.5"1,250°F1,4001 ½30Not Rated12"±0.3%±13°F125Not Available4,535 lbs