Graphite Heaters
Max Graphite supplies precision-machined graphite heaters for Czochralski silicon crystal growth, float zone processes, and industrial heat treatment furnaces — serving semiconductor, solar, and advanced materials manufacturers from a single qualified source. We machine to customer drawings across the full range of graphite grades, with full material traceability on every order.
Crystal Purity Begins With Heater-Grade Graphite
In Czochralski growth and high-temperature heat treatment, the graphite heater is the thermal core of the process — and its material quality has direct consequences for yield, crystal structure, and process repeatability. Contamination, thermal asymmetry, or dimensional deviation in the heater propagates downstream into dislocation defects, surface anomalies, and compromised crystal quality. Max Graphite specifies and machines heaters from verified, documented material grades so that what reaches your hot zone is matched to your process requirements — not just available.
- Verified Purity, Fully Documented: We supply heaters machined from high-purity and ultra-high-purity isostatic graphite grades, with lot traceability and material certification to support process qualification and yield control.
- Dimensional Precision for Thermal Uniformity: Heater geometry — slot pattern, wall thickness, electrode contact geometry — is machined to the tolerances required to maintain circumferential temperature uniformity throughout the growth or heat treatment cycle.
- Full Purity Spectrum in Stock: From standard isostatic grades for industrial heat treatment to semiconductor-grade materials for CZ and float zone applications, Max Graphite covers the full performance range from a managed material portfolio.
- Engineering Input Before the Order: Our team provides material selection guidance, dimensional review, and geometry feedback for new furnace configurations — not only machining capability.
- Cross-Technology Scope: We supply heaters for Czochralski silicon, float zone, sapphire, and SiC crystal growth, and for vacuum hardening, sintering, and brazing furnaces — one supplier qualified across your hot zone.
Applications
- Czochralski (CZ) single-crystal silicon growth
- Float zone (FZ) silicon crystal growth
- Sapphire crystal growth (Kyropoulos, HEM)
- Silicon carbide (SiC) boule growth
- Vacuum and atmosphere heat treatment furnaces
- Vacuum hardening and case hardening
- Vacuum sintering
- High-temperature brazing (nickel, copper, titanium)
- Diffusion bonding and hot pressing
Max Graphite Heater Solutions
Resistance Heaters
Max Graphite machines graphite resistance heaters in cylindrical, segmented, corrugated, and flat plate configurations to customer drawings, with slot geometries and electrode interfaces executed to tolerance for reliable current distribution and consistent thermal output.
- Cylindrical and ring heaters for CZ and float zone furnaces
- Corrugated and flat plate heaters for heat treatment and vacuum furnace hot zones
- Segmented and multi-zone heater assemblies
- Custom electrode contact profiles and terminal geometries
- Large-format heaters for industrial-scale chambers
Current Transfer and Support Components
Max Graphite supplies the electrode connectors, bus bars, and mounting hardware that complete the heater circuit, machined to interface directly with heater geometry and furnace hardware.
- Electrode rods and connectors
- Bus bars and current transfer plates
- Clamping and support brackets
Replacement and Retrofit Elements
Max Graphite replicates worn or legacy heater components from sample parts or historical drawings, supplying documented replacements with verified material equivalency for qualified production processes.
