Ultra-pure 5N CVD pyrolytic graphite (anisotropic thermal/diamagnetic plates) and mirror-polished gas-impermeable glassy (vitreous) carbon electrodes, wafers, and crucibles.
Specialty non-porous carbons solve two problems isotropic sintered graphite cannot: CVD Pyrolytic Graphite (PG) possesses highly aligned graphene planes delivering massive in-plane thermal conductivity (~300–400 W/m·K) alongside perpendicular thermal insulation (~2–3 W/m·K) and strong room-temperature diamagnetism; meanwhile, Glassy (Vitreous) Carbon combines fullerene-like ribbon microstructure with zero open porosity, ceramic-like hardness, zero particle shedding, and wide electrochemical potential windows.
Supplied as pyrolytic graphite plates/discs/crucible coatings, and mirror-polished glassy carbon plates (1–6 mm), rotating-disk electrode (RDE) rods, and analytical fusion crucibles.
| Property / Metric | Nominal Reference Value (Grade Dependent) |
|---|---|
| Purity | ≥99.995%–99.999% C (<5–20 ppm total ash) |
| Open Porosity / Gas Permeability | 0% open porosity; He permeability ~10⁻⁹ to 10⁻¹¹ cm²/s |
| Bulk Density | 2.18–2.22 g/cm³ (Pyrolytic Graphite) / 1.42–1.54 g/cm³ (Glassy Carbon) |
| Thermal Anisotropy (PG) | ab-plane ~350 W/m·K vs. c-axis ~2.5 W/m·K |
| Surface Polish (Glassy Carbon) | Mirror polish Ra < 10–25 nm available |
Reference values reflect typical sintered, fused, or wrought grades. Exact batch test figures are confirmed on your written quotation and accompanying lot Certificate of Analysis.
Specify Pyrolytic Graphite (anisotropic CVD carbon or HOPG mosaic angle ZYA/ZYB/ZYH) vs. Glassy/Vitreous Carbon (isotropic glassy mirror finish), form (plate, disc, rod, or crucible), dimensions, and surface finish.
Include target quantity, destination country/postal code for express air freight calculation, and any special cleanroom bagging or certification requests.
Prepare Pyrolytic Graphite & Glassy (Vitreous) Carbon RFQ ↗Complementary furnaceware, substrates, PVD consumables, and refractory hardware frequently ordered together.
TB-PVD-LNPrecision-tapered e-beam gun hearth liners in OFHC copper, purified & impermeable graphite, vitreous carbon, molybdenum, tungsten, alumina, and h-BN.
TB-GR-CRPrecision CNC-turned fine-grain isostatic graphite crucibles with low ash content (<20–500 ppm) for non-ferrous, precious metal, alloy, and crystal-growth melting.
TB-GR-PLPrecision ground fine-grain and isostatic graphite sheets, setter plates, EDM blocks, rods, and impermeable resin-impregnated bipolar plates.
TB-EC-TIFVacuum-sintered pure titanium microfiber felt (0.2–1.0 mm) and platinized Ti porous transport layers (PTLs) engineered for PEM water electrolyzers, regenerative fuel cells, and corrosive filtration.
Submit your purity grade, geometry, quantity, and documentation requirements. Every order includes the producing mill's batch Certificate of Analysis (COA) and pre-shipment dimensional verification.