Thermal Technology LLC has been acquired by GT Advanced Technologies.
For more information on GT, please visit

We have been providing solutions for advanced thermal processing since 1946. As a pioneer in the LED-sapphire and vacuum industries, we have served the lighting, renewable energy, electronics, aerospace, communications health care and research and development industries utilizing material applications of metals, ceramics, glass, nanopowders, crystals and emerging material. We carry a wide variety of vacuum furnaces, hot zone parts, OEM parts and much more. Please take a look throughout or website to learn more about what we can offer as well as our laboratory furnace, production furnace, hot press system, spark plasma sintering (SPS) and direct current sintering (DCS), graphite hot zone & OEM parts, ARC melting furnace, crystal grower technology and fiber drawing furnace products.

  • K1 sapphire crystal grower

    K1 Sapphire Crystal Grower

    Model K1 produces large HB LED-grade sapphire crystals 

  • Slide Four

    K1 HB LED-grade Sapphire

    The K1's 90kg HB LED-grade sapphire boule provides larger core diameters.

  • Slide Elevan

    Continued Success with Sapphire Crystal Growth

    Our customers are in successful production of HB LED-grade sapphire

  • Slide Twelve

    Continued Success with Sapphire Crystal Growth

    Our customers are in successful production of HB LED-grade sapphire

  • Slide Ten

    Quality, Durable Hot Zones

    Cost effective solutions for replacement hot zones.
    - Short lead times.
    - Responsive technical support & service.

  • Slide Three

    Diffusion Bonding Hot Press

    This system operates with 100 tons of total force and a 24" x 24" x 30" molybdenum hot zone capable of bonding multiple parts in one load.

  • Slide Five

    Spark Plasma Sintering System Model 10-3

    SPS Model 10-3 with 10 tons of force and a 3,000 amp power supply.

  • Slide Thirteen

    Direct Current Sintering System Model 100-36

    DCS Model 100-36 with 100 tons of force and a 36,000 amp power supply.

  • Slide Seven

    High Temp Furnace

    Model 1100 high temperature laboratory and small production scale furnace with a refractory metal hot zone.

  • Slide Eight

    APF Production Furnace

    Unique bell-jar raising design provides full access to the load

  • Slide Six

    Arc Melting Furnace

    Model BJ 5 Arc Melting Furnace is easy to operate, dependable and versatile.

GT Advanced Technologies is a diversified technology company with innovative crystal growth equipment and solutions for the global solar market.  Our decades of scientific expertise in advanced thermal processing includes high temperature laboratory and production equipment, hot presses and spark plasma sintering systems.