RFQ Checklist
- Target grain size (e.g., 5-15 microns)
- Ash content / purity limits
- Operating temperature and atmosphere
- Critical tolerances, surface finish, and fragile features
- Certificate requirement, destination, and end use
← Back to Materials
Isostatic Graphite
Ultra-fine grain graphite with uniform properties in all directions, ideal for high-precision and demanding applications.
Target Buyer:Best for engineers requiring isotropic properties, high precision, and extreme high-temperature stability.
Complete RFQs are easier to review within 1-2 business days when drawings, graphite grade, quantity, and destination are included.
Capability Highlights
- Isotropic structure for consistent thermal and electrical performance
- High density and mechanical strength
- Available in grades like IS-15, IS-14, and IS-11
Typical Applications
- EDM electrodes
- Semiconductor and crystal growth hot zones
- Continuous casting dies
- High-precision molds
Engineering Focus
- Grade selection based on grain size and porosity requirements
- Purity requirements for semiconductor applications
- Critical tolerance, edge strength, and surface finish tradeoffs
- Certificate, packing, and export review for high-purity programs
Key Evaluation Matrix
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Grain Size | 5 - 15 microns | Finer grain provides smoother surface finishes and better edge retention in CNC and EDM processes. |
| Bulk Density | 1.75 - 1.90 g/cm³ | Higher density reduces porosity and increases mechanical strength and oxidation resistance. |
| Purity / ash requirement | Commercial, purified, or buyer-specified limit | Purity requirements can change material availability, certificate scope, cleaning, and export review. |
Risk Controls
- Micro-cracking during complex machining: Use high-density fine-grain isostatic graphite with matched tooling and dry machining.
- Over-specifying isostatic graphite increases cost: Match the grade to precision, purity, temperature, and service-life needs instead of defaulting to the highest grade.
- Unapproved grade substitution changes process behavior: Confirm equivalent grade data, certificate requirements, and prior validation before replacing a known material.
Product Gallery
Buyer FAQ
What is the difference between IS-15 and IS-11?
They refer to different particle sizes and densities. IS-15 typically implies a finer grain and higher strength suitable for detailed EDM work.
When should I avoid isostatic graphite?
Large, simple furnace or metallurgical parts may be more economical in molded or extruded graphite if fine detail and isotropic properties are not required.
Can isostatic graphite be purified after machining?
Purification planning depends on grade, geometry, final dimensions, and certificate requirements. It should be discussed before production release.
Related Resources
Inquiry Email
Complete RFQs are easier to review within 1-2 business days when drawings, grade, quantity, and destination are included.
WhatsApp Alignment
+8618857971991
Use WhatsApp for quick alignment; send drawings by email for traceable review.