Toyo Tanso — Isotropic Graphite, Furnace Components and Carbon Composites
Global supply of high-purity isotropic graphite, furnace components, and carbon-carbon composites by Toyo Tanso (Japan / Toyo Tanso Co., Ltd.). High-temperature heaters, crucibles, C/C composite fixtures, and mechanical seals from SpareX.
Toyo Tanso Isotropic Graphite for Industrial Furnace Components
Toyo Tanso isotropic graphite is manufactured using cold isostatic pressing CIP technology. Premium grades IG-11 and IG-15 feature uniform strength and thermal conductivity in all orientations. They serve as reliable heating elements, shields, and structural hearth blocks up to 2000 °C.
- Fine-grain isotropic grades IG-11, IG-12, IG-15, and high-strength IG-43
- Bulk density of 1.77 to 1.90 Mg/m3 with flexural strength up to 60 MPa
- Superior thermal shock resistance and inert atmosphere duty up to 2000 °C
- Tubular and serpentine heating elements, thermal shields, and hearth rails
Toyo Tanso C/C Composite Fixtures and Fasteners for Thermal Furnaces
Toyo Tanso CX series carbon-carbon composites are reinforced with high-strength carbon fibers. The structure provides triple the strength of graphite, resisting thermal fractures during cyclic heat treating up to 2000 °C. Widely selected for lightweight charging fixtures, trays, and bolts.
- Two-dimensional 2D plates CX-2002 and filament wound profiles FW series
- Elasticity modulus five times higher than graphite with high toughness
- Substantial fixture weight reduction for rapid furnace thermal cycling
- C/C threaded studs, hex nuts, charging grids, and heat-treating baskets
Toyo Tanso High-Purity Graphite for Semiconductor CZ Crystal Pullers
Toyo Tanso supplies ultra-high purity graphite parts with ash levels below 5 ppm for Czochralski CZ silicon crystal growing furnaces. Components withstand contact with molten silicon near 1500 °C. The line covers split susceptors, radiation shields, pedestals, and heating elements.
- Ultra-high purification technology achieving total ash content under 5 ppm
- Thermal endurance during molten silicon containment near 1500 degrees C
- High-temperature halogen purification and high-density CVD SiC coatings
- Multi-segment susceptors, upper radiation shields, and crucible pedestals
Toyo Tanso Mechanical Carbon for Mechanical Seals and Rotating Pumps
Toyo Tanso mechanical carbon materials combine self-lubricating characteristics with chemical inertness in harsh liquids and vapors. They operate smoothly under dry running across demanding industrial applications. The series includes seal face rings, sleeve bearings, and sliding pump vanes.
- Self-lubricating grades impregnated with phenolic resin, antimony, or copper
- Low coefficient of sliding friction eliminating dry-run shaft scoring
- Broad chemical compatibility with aggressive acids, fuels, and solvents
- Mechanical seal faces, hydrodynamic bearings, and sliding compressor vanes
Toyo Tanso ISEM Series Graphite for Electrical Discharge Machining
Toyo Tanso ISEM-3 and ISEM-8 graphite grades are engineered for electrical discharge machining of intricate dies and stamping molds. Uniform fine-grain structure minimizes electrode edge wear while maximizing metal removal rate and maintaining clean surface finish on tool steel.
- Homogeneous micro-grain graphite structure with particle size of 4 to 8 um
- High flexural strength up to 55 MPa preventing thin electrode fin breakage
- Reduced corner wear during aggressive roughing and high-current burning
- Precision electrode blocks, wire cut blanks, and micro-machining graphite
Toyo Tanso PERMA-FOIL Flexible Graphite Gaskets and Packing Sheets
PERMA-FOIL flexible graphite sheets are produced from natural graphite without binders or resins. The compliant structure ensures sealing against flange surfaces under intense heat in inert atmospheres. It provides reliable performance for high-temperature gaskets and packing.
- High carbon purity from 99 to 99.9% without polymeric binders or adhesives
- Broad thermal resistance from cryogenic conditions to extreme hot furnace zones
- High compressibility and elastic recovery compensating for flange movement
- Die-formed packing rings, flat flange gaskets, and thermal barrier strips
Toyo Tanso Isotropic Graphite and Carbon Composite Architecture
Japanese corporation Toyo Tanso Co., Ltd. pioneered the production of high-density isotropic graphite using cold isostatic pressing CIP methods. The material provides a micro-particle structure with uniform mechanical and thermal properties across all dimensions.
The technology supports demanding high-temperature vacuum furnaces, semiconductor crystal growth pullers, and mold spark machining.
The engineering lineup features isotropic grades IG-11 and IG-15, lightweight carbon-carbon composites CX series, ultra-pure semiconductor CZ hot-zone assemblies with ash levels below 5 ppm, self-lubricating mechanical seal faces, and binderless flexible graphite sheets PERMA-FOIL.
Engineering Sizing and Material Selection for High-Temperature Duty
Selecting Toyo Tanso carbon materials requires analyzing operating furnace atmosphere, vacuum level, peak thermal exposure, and mechanical load cycles. Utilizing thin-profile C/C composite trays reduces thermal inertia and accelerates furnace turnaround times while maintaining dimensional rigidity.
SpareX engineering teams assist with thermal zone audits, custom component blueprint verifications, and dependable global delivery of verified Toyo Tanso graphite elements, heating assemblies, and hardware.
Toyo Tanso and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Toyo Tanso and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
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Documents and sources
- Official Toyo Tanso website — special isotropic graphite and carbon composites
- Toyo Tanso Co., Ltd. manufacturing bases and overseas offices — locations
- Toyo Tanso isotropic graphite catalog — isostatic pressing and grade properties
- Toyo Tanso C/C composite materials — high-strength thermal resistant structures
- Graphite components for industrial furnaces — heating elements and shields
- Graphite components for monocrystalline silicon furnaces — ultra-high purity
- Graphite electrode materials for electrical discharge machining — ISEM series
- PERMA-FOIL flexible graphite sheets and seals — exfoliated natural graphite
- Toyo Tanso mechanical carbon and seals — mechanical seal rings and bearings
- Toyo Tanso Co., Ltd. corporate profile and international facilities — catalog
