Customer Friendly, High Quality Ceramics from our Complete Ceramic manufacturing facility.

TATEHO OZARK Technical Ceramics is the most diverse supplier of Magnesium Oxide (MgO) fabricated ceramic shapes in the industry. Purities are available from 96% to 99.4% MgO and products are engineered for excellent thermal, electrical, and dimensional properties.

Our MgO products are made by three fabrication methods:

  • Slip casting is the preferred fabrication method for thin walled MgO components, especially crucible shapes.
  • Extrusion is used for mass production of precision tubes and shapes for thermocouple and heater components.
  • Dry pressing is employed for bulk forms in limited shapes.

TATEHO OZARK also offers a complementary line of Aluminum Oxide (Al2O3) products by all three techniques, and extrusions of Hafnium Oxide (HfO2) for ultra-high temperature use.

 

TEST Cartridge heater component examples INTRO: TATEHO OZARK did not enter the commercial MgO heater market until 1997.  The previous 15 years of experience were limited to high purity MgO powders  with a minimum 99.4% MgO content.   This limited our ability to address the high performance cartridge heater market.  The commercial market can not support the raw material costs, and many electrical and mechanical  properties are improved with the ability to have beneficial silica, alumina, and lime content. The vertical integration of the TATEHO OZARK extruded product family into heater and electrical grades has occurred very systematically.  This makes TATEHO OZARK unique as the only company with total MgO capabilities in casting, extrusion, and pressing at all Purities and densities.  In 2015 – Tateho Chemical Industries acquired OZARK and establishes TATEHO OZARK Technical Ceramics (TOTC)!  Our relationship with our sister company (TateCera) in Une, Japan where highest quality MgO powders are produced and manufactured into Ceramics keeps our future MgO supply prospects secure.  TATEHO is synonymous with high quality fused MgO for over 50 years.  OZARK had a pipeline to them as a favored customer since inception.  We now have the ability to create more designer blends because of our new ability to work directly with the excellent Engineers, Scientists, and Technicians at TATEHO. TATEHO OZARK has learned a lot from our technical interactions with our excellent customers and are able to communicate about important issues regarding the form, fit, and function.  Please explore our various product descriptions, with the understanding that not all technical labels and jargon are universal, and our categorizations may be inaccurate or incomplete. Some main points about TATEHO OZARK heater products
  • High Quality MgO grades custom made in our Japanese Global leading facility.
  • OD sizes from 0.062" to 1.0" (1.5mm - 25mm)
  • Round, oval, triangular holes
  • Complex hole configurations
  • Excellent camber properties
  • Customer specified hardness – strong engineering support
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DD1 – High Purity Powders

MgO powders, Hafnium Oxide powders, Al2O3 powders, Alumina powders, Magnesia powders, backfill powder, junction powder, Flo-Pak powders, Setter sand

Heater Grade MgO Winding Cores

Cartridge Wind cores, Cartridge heater cores, Swageable Cores, Swageable Insulators

Thermocouple & MI Cable

crushable insulator, crushable preform, swageable preform, thermocouple insulators, blocks, pellets, MIMS insulators, beads.

HUH-CUH – High purity Hafnium Oxide extrusions

Hafnia insulators, hard and soft fired Hafnia insulators, beads, or pellets.

MgO insulators for heaters

Cartridge Wind cores, Cartridge heater cores, Swageable Cores, Swageable Insulators

Grade PTM MgO Cores

Heads, Spacer cores, Swageable Cores, Swageable Insulators

Grade CTM MgO cores for coil heaters

Tubular cores, Spiral heater cores, Alien cores, oval cores, Swageable Cores, Swageable Insulators

Grade CTM MgO Cold Cores

No-Heat cores, Heads, Spacer cores, Swageable Cores, Swageable Insulators

Grade CTM MgO Spacers

bushings, wafers, stars, centering bushings, disks, centering disks

Crushable insulators are rigid tubes, rods, and multi-hole configurations available at lengths up to about 200 mm (<30:1 L/D recommended) and generally round (not required) configurations of constant cross-section (required). These insulators are designed to be inserted into the metal sheath with conductor elements already threaded in them. The assembly is then swaged or drawn to crush the insulator into a fine, flowable powder which will allow elongation of the cable and tightly compact to maintain separation and electrical insulation of the metallic components. They may be designed to crush very easily to protect soft platinum components, or with more integrity to improve handling and performance properties. Please refer to the strength specifications
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MIMS Insulator

crushable insulator, crushable preform, swageable preform, thermocouple insulators, blocks, pellets, MIMS insulators, beads. (Not to be confused with heating element cores for production of cartridge, cable, or coil heaters or similar.)

DD1 – High Purity Powders

MgO powders, Hafnium Oxide powders, Al2O3 powders, Alumina powders, Magnesia powders, backfill powder, junction powder, Flo-Pak powders, Setter sand

Crushable Insulator

crushable preform, swageable preform, thermocouple insulators, blocks, pellets, MIMS insulators, beads. Not to be confused with heating element cores for production of cartridge, cable, or coil heaters or similar.

TATEHO OZARK has added variations of MgO and extended our extrusion capability to other important Oxide ceramic materials to meet special niche requirements. This list includes both developmental products and fully mature products which don't happen to fit into the heater and temperature sensing category (as well as those that do!)  
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High purity crushable Aluminum Oxide extrusions

crushable preform, swageable preform, thermocouple insulators, blocks, pellets, MIMS insulators, beads

DD1 – High Purity Powders

MgO powders, Hafnium Oxide powders, Al2O3 powders, Alumina powders, Magnesia powders, backfill powder, junction powder, Flo-Pak powders, Setter sand

Grade SPN Spinel crushable insulators

Magnesium Aluminate, MgO/Al2O3 Spinel, Alumina Rich Spinel, MgAl2O4

High Density Magnesium Oxide GRADE HRM

Sparge Tubes, OBE tubes, MgO High Density tubes, MgO hard fired tubes

Hard fired Insulators

beads, double bore tubing, multi-hole tubing, ceramic beads, fish-spine beads

MgO for Ultra High Pressure use in Geology Experiments and Diamond Synthesis

Capsules, Pressure media, MgO Preforms

Grade FUS – Fused Silica Crushable Insulators

SiO2, Silica, Fused Quartz, Silicon Oxide, Flint

HUH-CUH – High purity Hafnium Oxide extrusions

Hafnia insulators, hard and soft fired Hafnia insulators, beads, or pellets.

Our slip casting process produces dense crucibles with fine grained microstructure and less than 1% open porosity.
NAME AKA
DD1 – High Purity Powders

MgO powders, Hafnium Oxide powders, Al2O3 powders, Alumina powders, Magnesia powders, backfill powder, junction powder, Flo-Pak powders, Setter sand

Magnesia Crucibles

High Density MgO crucibles, Magnesia crucibles, MgO trays, Magnesia trays

Alumina Crucibles

High Density Al2O3 crucibles, Alumina crucibles, Al2O3 trays, Alumina trays