Isostatic graphite is the material of choice for semiconductor equipment, solar PV furnaces, EDM electrodes, and precision vacuum-furnace components. If you are looking for a reliable isostatic graphite supplier in India, Expo Advanced Materials offers stocked billets in multiple grades, cut-to-size supply, and full precision machining — all under ISO 9001:2015 certification.
Isostatic Graphite Grades We Supply
| Grade | Density (g/cm³) | Grain Size (μm) | Max Purity | Primary Use |
|---|---|---|---|---|
| IG-11 | 1.77 | 20 | 5N (99.999%) | Nuclear, semiconductor |
| IG-110 | 1.77 | 20 | 5N purified | CZ crystal growth, solar PV |
| IG-430U | 1.82 | 10 | 5N purified | Solar PV, high-power EDM |
| TTK-8 | 1.85 | 5 | 4N | Vacuum furnace hot zone |
| Fine-grain HP | 1.80–1.88 | 5–15 | 3N–4N | EDM, precision machined parts |
Stock Dimensions
We hold billet stock in the following forms, available for immediate cut-to-size supply or precision machining:
- Blocks — Up to 800 × 800 × 500 mm. Smaller blocks (200–400 mm range) available from stock for faster dispatch.
- Rods — Diameter 15 mm to 300 mm, lengths up to 1,800 mm.
- Plates — Up to 1,000 × 600 mm, thickness 10–100 mm.
- Tubes — OD 30–200 mm, wall thickness 5–30 mm, length up to 1,200 mm.
Applications
- Semiconductor — Czochralski crucibles, susceptors, guide tubes, heating elements for silicon and GaAs crystal growth
- Solar PV — Isostatic graphite crucibles and susceptors for directional solidification furnaces
- EDM tooling — Fine-grain isostatic electrodes for micro-EDM, die sinking, and precision mould machining
- Vacuum furnaces — Heating elements, radiation shields, hearth plates in high-density grades
- Fuel cells — Bipolar plate blanks for PEM fuel cells requiring tight porosity control
Why Buy Isostatic Graphite from Expo?
We stock multiple grades in billet form — not just sourced to order. This means cut-to-size supply without minimum order quantities typical of billet-only distributors. Our in-house CNC facility machines components directly from billet, so you can receive finished parts rather than raw material. All stock carries full material certificates.
How to Order
Specify grade, form (block/rod/plate/tube), dimensions, and quantity. For machined parts, share your drawing or 3D file. We confirm availability and pricing within 24 hours. Export packed and shipped to your door worldwide.