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EDM Tooling
Graphite materials and custom parts for EDM electrodes, tooling blocks, and precision machining applications.
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Application-Specific Engineering
Graphite Solutions for Industrial Applications
QDZRT Graphite supplies graphite materials and custom graphite parts for EDM tooling, sealing systems, thermal management, conductive materials, protective coatings, and battery-related applications.
APPLICATION SECTORS
Graphite Supply by Industry & Application
Select an industry or application to review available graphite product forms, custom machining options and the information needed for quotation.
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Sealing Materials and Industrial Gaskets
Graphite sealing materials and flexible graphite sheet for industrial gaskets, flange sealing, valve and pump seals, and custom-cut components.
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Thermal Management and High-Temperature Processing
Graphite materials for heat spreading, thermal management, and high-temperature processing, including flexible graphite sheet, graphite block, and custom graphite parts.
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Conductive, Antistatic, and Functional Materials
Conductive graphite materials for antistatic plastics, electronic fillers, and functional compounds, including natural flake graphite, micronized graphite powder, and synthetic graphite powder.
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Protective Coatings and Fire Protection
Graphite materials for anti-corrosion coatings, functional coatings, and fire protection, including micronized graphite, natural graphite powder, and expandable graphite.
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Battery and Energy Storage Materials
Graphite materials for battery anodes and energy storage, including battery grade graphite anode materials, natural flake graphite, synthetic graphite powder, and high purity graphite powder.
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INDUSTRIES WE SUPPLY
Industries & Applications We Supply
Explore industrial applications supported by our graphite materials, converted products and custom-machined components. Final material and grade are confirmed from operating conditions, drawings, specifications and order requirements.
Tooling, Dies & Precision Machining
DJY / MY / JY Graphite GradesMaterial Specifications & Tailored Grades
Select the material within the QDZRT Graphite DJY / MY / JY system according to EDM detail, strength, grain-size, purity and machining requirements. DJY denotes isostatic graphite, MY molded graphite and JY extruded graphite. Numeric limits must come from the confirmed specification of the selected grade; endpoints from different source grades are not combined.
Custom CNC Machining & Fabrication to Client Blueprints
We produce raw blocks, pre-sawn plates, and fully CNC-machined tooling components. Tight-tolerance machining is available for suitable geometries; final tolerances and inspection methods are confirmed from part size, graphite grade, and customer drawings.
Turnkey Application Co-Development & Technical Support
Whether you require raw material feedstock or fully finished electrode sets ready for die-sinking, our technical engineers collaborate directly with your team to optimize discharge efficiency, minimize electrode wear, and reduce total tooling costs.
Fine-Grain 4–8 μm Options
Density 1.78–1.90 g/cm³
Low-Ash Purified Grades
EDM & Precision CNC Grades
Fluid Sealing & Flexible Graphite Paper
Continuous Rolls, Sheets & Die-Cut PartsMaterial Specifications & Tailored Grades
Flexible graphite foil is available in 99.0%, 99.5%, and 99.9% carbon grades, with common foil and roll thicknesses of 0.125–1.6 mm. A representative high-purity specification is 0.4 mm thickness, 1.25 g/cm³ density, 99.9% carbon, 50 ppm sulfur, 0.1% ash, and 25 ppm chloride. Batch COA can be supplied for agreed specification items.
Custom Calendering, Lamination & Automated Die-Cutting
Continuous master roll calendering (thickness 0.1mm–2.0mm, width up to 1500mm), SS304/SS316/Inconel tanged metal core lamination, micro-slit filler tape for spiral wound gaskets, and automated knife/laser die-cutting to exact flange dimensions (ASME, DIN, JIS, customized).
Tailored Sealing Solutions for Extreme Industrial Environments
Whether you require raw continuous rolls for your own gasket conversion or finished, custom-molded packing rings and flange gaskets ready for assembly, our technical engineers formulate solutions matched to your pressure ratings, chemical media, and operating temperatures.
99.0–99.9% Carbon Grades
0.125–1.6 mm Foil / Roll
Low-S / Low-Cl Options
Batch COA Available
Friction, Braking & Transportation
Solid Lubricants & Friction ModifiersMaterial Specifications & Custom Formulations
Typical natural flake examples include 80 mesh / 95–99% fixed carbon, 100 mesh / 99% fixed carbon, 200 mesh / 95–99% fixed carbon, and 325 mesh / 95–99.5% fixed carbon. Selected high-purity grades reach ≥99.9% carbon. Synthetic graphite powder is available in 100–325 mesh grades, with D10/D50/D90 particle-size targets specified for friction, conductive, and functional formulations.
Precision Micronization, Metal Impregnation & Sintering
Air-jet micronization, high-uniformity blending, and metal-impregnated (copper, antimony, babbitt) carbon contact strip sintering. We fabricate finished pantograph contact strips, motor brushes, and self-lubricating dry bearings according to OEM technical drawings.
Custom Compounding & Friction Solution Engineering
From custom particle distribution blends for friction lining manufacturers to fully sintered, ready-to-mount current collector strips for rail transit systems, our engineering team tailors thermal conductivity, conductivity, and wear ratios to your target testing standards.
80 / 100 / 200 / 325 Mesh
95–99.9% Fixed Carbon
Natural & Synthetic Grades
PSD D10 / D50 / D90 Control
Fire Protection, Coatings & Building Materials
Intumescent Flakes & Protective PowdersMaterial Specifications & Tailored Grades
Typical expandable graphite examples include 50 mesh / 200–350 mL/g expansion volume, 80 mesh / 150–250 mL/g, and 100 mesh / 100–200 mL/g. Standard grades cover 90–99.5% fixed carbon; low-sulfur grades are available at ≤0.03% sulfur, and selected high-purity grades reach ≥99.8% carbon.
Custom Intercalation, Particle Sizing & Surface Coating
Controlled acid intercalation yields ultra-low residual acid (pH 6.0–7.5), custom flake distribution (32, 50, 80, 100 mesh), and optional surface silane/resin coating for seamless dispersion in polyols, PU flexible foams, latex, EVA, and intumescent mastic formulations.
Tailored Flame Retardancy & Application Co-Engineering
We tailor onset expansion temperature and particle size to the intended formulation and process (foaming, extrusion, coating). Final system performance should be verified in the complete formulation or product against the applicable requirement—for example, UL 94 V-0 flammability classification, BS 5852 ignitability testing, or DIN 4102 B1 building-material classification. Results depend on the base polymer, additive loading, processing, specimen construction, and test conditions.
50 / 80 / 100 Mesh Options
Expansion 100–350 mL/g
Low-Sulfur ≤0.03% Options
High-Purity ≥99.8% C
Thermal Systems, Metallurgy & Semis
Hot Zones, Furnaces & Continuous CastingMaterial Specifications & Tailored Grades
Select the material within the QDZRT Graphite DJY / MY / JY system according to furnace temperature, atmosphere, mechanical loading, purity, grain size and billet dimensions. DJY denotes isostatic graphite, MY molded graphite and JY extruded graphite. Numeric limits are published only when they can be tied to a confirmed grade specification; representative values or endpoints from different grades are not merged into one guarantee.
Multi-Axis CNC Fabrication, SiC Coating & Anti-Oxidation
Precision CNC milling, turning, and thread tapping are available for vacuum-furnace components, hot zones, crystallizers, process boats, and crucibles. SiC and anti-oxidation coating options can be reviewed where applicable; expected service life depends on graphite grade, coating system, temperature, and atmosphere.
Custom Hot Zone Engineering to Furnace Blueprints
We configure complete thermal hot zone assemblies, continuous casting dies, or high-purity semiconductor carriers tailored to your furnace dimensions and thermal cycling profiles, ensuring uniform heating distribution and maximum service life.
Density 1.72–1.90 g/cm³
Thermal Conductivity 100–135 W/m·K
Low-Ash Grades ≤500 ppm
Purified Grades Available
Energy Storage, Batteries & Heat Spreading
Anode Precursors, Bipolar Plates & Thermal FoilsMaterial Specifications & Tailored Grades
Typical spherical graphite examples include D50 10–11 μm / C ≥99.95% / tap density ≥0.94 g/mL, D50 14–16 μm / C ≥99.95% / tap density ≥0.98 g/mL, and D50 19–20 μm / C ≥99.95% / tap density ≥1.0 g/mL. A typical synthetic graphite grade example is C 99.9%, tap density 1.15 g/cm³, ash 0.02%, and D50 22–23 μm.
Spheronization, Surface Carbon Coating & Cleanroom Converting
Mechanical shaping and spheronization, surface-coating options, controlled graphitization, and precision slitting or die-cutting can be selected according to the required battery, thermal-management, or fuel-cell material specification.
Custom Energy Material Formulation & Co-Development
For lithium-ion projects using NMC or LFP cathodes, we review graphite anode-material requirements such as particle-size distribution, specific surface area, surface coating condition, and qualification targets. We also convert ultra-thin graphite films to specified electronic-device or EV battery-pack dimensions.
D50 10–20 μm Options
Carbon ≥99.95%
Tap Density: ≥0.94 / ≥0.98 / ≥1.0 g/mL by grade
PSD & Grade Control
Chemical Processing & Corrosion-Resistant Applications
Heat Exchangers, Sealing & Process ComponentsMaterial Specifications & Tailored Grades
Typical resin-impregnated graphite grades may offer gas permeability below 10⁻⁶ cm²/s and compressive strength above 85 MPa, subject to grade and test method. Compatibility with acids and other corrosive media depends on the resin system, graphite grade, concentration, temperature, and pressure; operating conditions should be confirmed before selection.
Deep-Hole Machining, Impregnation & Inspection
Deep-hole drilling, resin vacuum-pressure impregnation, and tube assembly can be supplied for applicable graphite process components. Leak-testing and hydrostatic inspection requirements are reviewed against the confirmed product design and order specification.
Custom Chemical Process Equipment Co-Engineering
We tailor heat exchanger sizing, process channel configurations, bursting disc pressure ratings, and pump bushing dimensions to your specific chemical process blueprints, flow rates, and operating pressures.
Custom Sizing to Process CAD / P&ID
Corrosion Resistance by Grade & Medium
Thermal Conductivity Depends on Grade
Leak-Test Options for Applicable Components
High-Temperature, High-Purity & Advanced Applications
Vacuum Furnaces, Thermal Fixtures & Specialty GraphiteMaterial Specifications & Tailored Grades
High-purity and fine-grain graphite materials are used in demanding thermal and industrial applications where purity, dimensional stability, and high-temperature performance are important. High-purity grades, including 99.9% carbon options, can be considered where required. Final grade and purity are confirmed according to the application and order specification.
High-Temperature Processing & Precision Machining
Purification, precision machining, and inspection routes are selected according to graphite grade and application requirements. Tight machining tolerances are available for suitable geometries, with final tolerances, cleanliness, packaging, and inspection methods confirmed from drawings and the order specification.
Advanced Application Customization & Technical Collaboration
We support custom vacuum-furnace components, thermal fixtures, susceptors, and specialty graphite parts based on customer drawings, operating conditions, material grade, and inspection requirements.
Drawing-Based Custom Machining
High-Purity Grades incl. 99.9% C
High-Temperature Material Options
Inspection Requirements by Specification
MANUFACTURING & SUPPLY
Full-Spectrum Graphite Supply & Engineering Capabilities
From raw carbon powder micronization and flexible graphite paper converting to multi-axis CNC fabrication, we provide end-to-end industrial material solutions.
High-Purity Raw Materials & Powders
Natural flake, synthetic powders, and expandable graphite are available with controlled particle-size options. High-purity grades and batch documentation can be reviewed where required.
Flexible Graphite Paper & Converting
Continuous flexible graphite rolls (0.1mm–2.0mm), metallic reinforced sheets, and high-speed die-cutting for sealing gaskets and thermal heat spreaders.
Precision Multi-Axis CNC Machining
Multi-axis CNC milling, turning, and grinding are available for EDM electrodes, hot-zone structures, and custom graphite parts. Final tolerances and inspection methods are confirmed from part geometry, graphite grade, and drawings.
Thermal & Anti-Oxidation Shielding
SiC coatings, resin impregnation, and anti-oxidation treatments can be reviewed for selected thermal and chemical-service parts. Final suitability depends on graphite grade, coating or impregnation system, temperature, atmosphere, and process conditions.
COLLABORATIVE WORKFLOW
4-Step Solution & Supply Process
A structured engineering process covering raw material formulation, roll converting, and precision CNC fabrication with dependable global delivery.
01
Application & Parameter Audit
Our engineers evaluate operating temperatures, chemical media, powder PSD/purity specs, sheet thickness, or CAD drawings.
02
Material Matching & Specification Review
We recommend optimal raw flake/powder grades, flexible graphite paper specs, or isotropic blocks and confirm the applicable specification, batch documents, and test documentation.
03
Precision Processing & Inspection
Processing can include powder sizing, roll slitting, die-cutting, or multi-axis CNC machining, with applicable particle-size, density, dimensional, and other inspection methods confirmed to the order specification.
04
Protective Packing & Global Export
Moisture-resistant drums, roll packaging, or shock-resistant crating are selected according to the product, with COA, batch, or inspection documentation available where applicable.
Need Help Finding the Right Graphite Solution for Your Application?
Send your application requirements, drawings, or material needs to QDZRT Graphite for matching support and quotation.