Graphite Powder and Graphite Flakes for Lubricant and Refractory Use
Product Overview
Our graphite powder and graphite flakes are high-purity carbon materials milled and classified to precise particle size distributions for use as solid lubricants, refractory additives, foundry facing compounds, battery materials, and friction modifiers. Available in particle sizes from 1 micron (colloidal) to 500 microns (coarse flakes), our graphite powders are produced from high-grade petroleum coke and needle coke feedstock, with carbon content from 98% to 99.99%. At Jincheng Graphite, we supply both natural flake graphite and artificial graphite powders in 25 kg bags and bulk quantities, tailored to your specific application requirements.
Graphite powder is a versatile industrial material used across dozens of industries: as a parting agent in foundry molding, as a lubricant additive in oils and greases, as a carbon source in refractories, as a conductive filler in plastics and batteries, and as a raw material for graphite product manufacturing. At Jincheng Graphite, we stock a full range of graphite powder grades and can custom-mesh powders to your exact particle size distribution and purity requirements. Every batch is tested for ash content, moisture, particle size, and carbon purity before shipment.
Key Features
- High carbon content - 98% to 99.99% purity available
- Precise particle sizing - from 1µm colloidal to 500µm coarse flakes
- Low ash - ash content below 1% for most grades
- Good lubricity - naturally layered structure provides dry lubrication
- High temperature stable - no decomposition up to 3000°C in inert atmosphere
- Chemical inertness - resistant to most acids, alkalis, and solvents
- Conductive - used as conductive filler in composites and batteries
- Custom packaging - 25 kg bags, big bags, or custom packaging
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Artificial graphite powder / natural flake graphite |
| Carbon Content | 98%, 99%, 99.5%, 99.99% (available grades) |
| Ash Content | 0.02% - 1.5% (grade-dependent) |
| Moisture | < 0.5% |
| Particle Sizes | 1µm, 5µm, 10µm, 200 mesh, 325 mesh, 50 mesh, +50 mesh |
| Color | Black / steel gray |
| Bulk Density | 0.3 - 0.8 g/cm³ |
| Loss on Ignition | < 1% (99% grade and above) |
| Sulfur Content | < 0.1% |
| Packaging | 25 kg multi-ply paper bags / 1000 kg big bags |
| Storage | Dry, ventilated area; avoid moisture |
| Lead Time | 5-15 business days |
Applications
- Foundry mold release - dry lubricant and parting agent for sand and die casting
- Lubricant additive - solid lubricant in gear oils, greases, and metalworking fluids
- Refractory industry - carbon additive in magnesia carbon bricks and rammed linings
- Battery material - anode material and conductive additive in lithium-ion batteries
- Friction materials - lubricant in brake pads and clutch facings
- Carbon product manufacturing - raw material for extruded and molded graphite production
Why Choose Jincheng Graphite?
- Multiple grades - wide range of purity and particle size combinations
- Quality testing - every batch tested for carbon, ash, and particle size
- Custom sizing - custom mesh sizes available on request
- Bulk supply - 20 ft container quantities available
- Competitive pricing - factory-direct graphite powder supply
- Consistent quality - batch-to-batch consistency for production processes
- Global shipping - customers in 30+ countries across multiple industries
- Technical support - help select the right grade for your application
FAQ
Q: What is the difference between artificial and natural graphite powder?
A: Artificial graphite powder is produced from calcined petroleum coke at high temperature, with more consistent purity and structure. Natural flake graphite is mined and has a more crystalline flake structure, better lubricity but more impurities. For battery and high-purity applications, artificial graphite is preferred. For foundry and lubricant use, natural flake is often more cost-effective.
Q: What particle size should I use for mold release?
A: For foundry mold parting, 100-200 mesh powder is standard. For fine-detail precision castings, use 325 mesh or finer. For heavy steel casting, 50 mesh coarse flakes work well. Tell us your casting process and we will recommend the optimal particle size.
Q: Can you supply ultra-high purity 99.99% graphite powder?
A: Yes. We supply 99.99% carbon purity artificial graphite powder for semiconductor, battery, and nuclear applications. This grade has ash below 0.05% and is produced under controlled conditions. Minimum order quantities apply for ultra-high purity grades.
Q: How should graphite powder be stored?
A: Store in a dry, ventilated warehouse away from moisture and direct sunlight. Keep bags sealed when not in use. Graphite powder does not degrade over time, but moisture absorption can affect performance in lubricant and refractory applications. Shelf life is essentially unlimited when stored dry.
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