Product Core

High Purity ISO Graphite is fabricated via Cold Isostatic Pressing (CIP) to achieve 3D uniform densification under ultra-high pressure (140–200 MPa). Made from petroleum coke purified at over 2500℃, it exhibits near-theoretical density and excellent isotropy, ensuring stable performance across diverse applications.

Technical Parameters

Parameter	Key Value
Density	1.80–1.92 g/cm³
Ash Content	≤ 100 ppm
Anisotropy Ratio	1.0–1.05
Coefficient of Thermal Expansion (CTE)	4.2–5.0 × 10⁻⁶/K (RT–400℃)
Purity	C≥99.9%
Thermal Conductivity	110–130 W/(m·K)
Flexural Strength	55–85 MPa

Products support personalized customization.

Core Features

Ultra-high purity: Ultra-low ash/metal impurities (Fe, Ca, Na), ICP-MS verified, fit impurity-sensitive fields.
Excellent density: High bulk density, low porosity, boosting thermal conductivity and mechanical capacity.
Isotropy: Minimal differences in thermal expansion/flexural strength across directions.
Extreme heat resistance: Stable at high temps in inert atmospheres (coating needed in oxidizing environments above specific temps).
Thermal shock resistance: Withstands rapid temp changes without cracking.
Precision machinability: High Purity ISO Graphite features tight tolerances and can be processed into complex parts (turbine disks, crucibles).

Key Applications

Semiconductor: Monocrystalline silicon furnace thermal components/wafer carriers (high temp-resistance, ultra-low impurities).
Photovoltaic: Polysilicon ingot crucibles/heaters (resist silicon melt erosion).
Nuclear energy: High-temperature gas-cooled reactor neutron reflectors (meets nuclear-grade specs).
Aerospace: Rocket nozzle throat inserts/missile fins (resist extreme high-temp ablation).
High-end metallurgy: Titanium alloy melting crucibles (reusable, no leakage).
Industrial equipment: EDM electrodes/high-temperature furnace key parts.

Certification & Customization

High Purity ISO Graphite meets SEMI F76 (semiconductor), ISO 8005 (nuclear), EN 10298/ASME BPVC (safety), and RoHS 3.0 (environmental) standards. Custom services include: silicidation (to enhance oxidation resistance), secondary impregnation (to boost density), and ultra-fine structure optimization (to improve toughness).