# Non-graphitized carbon

Non-graphitized carbon for structural thermal barriers, separators and furnace supports — lower conductivity than graphite. Inventory and CNC in Mexico.

Source: https://esgraf.com/en/materials/technical-graphite/non-graphitized-carbon

## Structural thermal barrier

Carbon material with a less crystalline structure than graphitized technical graphite. Lower thermal conductivity makes it an efficient solution for **structural thermal separation**: it maintains dimensional stability, good mechanical strength and excellent machinability, with a favorable cost profile compared to highly conductive graphites when heat dissipation is not desired.

| Property | Typical range (ABR grade) |
| --- | --- |
| Bulk density | 1.60 g/cm³ |
| Max. grain size | 0.8 mm |
| Flexural strength | 22 MPa |
| Compressive strength | 64 MPa |
| Open porosity | 18 % |
| Ash content | 0.2 % |

Also available as denser, harder carbons (~1.62 g/cm³, ~10 W/m·K) for electrolysis anodes when low thermal conductivity is required.

## Typical applications

- Separators and structural plates in furnaces
- Thermal barriers between process zones
- Supports in the glass industry and metallurgical processes
- Electrolysis anodes and extruded-carbon duties
- Cost-effective alternative when high conductivity is not required

Available in standard plates and blocks or machined parts to drawing. Inventory and CNC in García, N.L.

See also [carbon-graphite mechanical](https://esgraf.com/en/materials/technical-graphite/carbon-graphite) and [extruded graphite](https://esgraf.com/en/materials/technical-graphite/extruded).

## Technical properties

| Property | Value |
| --- | --- |
| Densidad aparente | 1.55–1.65 g/cm³ |
| Conductividad térmica | 10–35 W/m·K |
| Resistencia a la flexión | 16–25 MPa |
| Porosidad abierta | 15–20 % |

## Also known as
- Structural carbon
- Non-graphitized carbon

## Advantages
- Lower thermal conductivity than graphite
- Good dimensional stability at elevated temperature
- Excellent machinability
- Cost-effective alternative when heat dissipation is not required

## Presentations
- Plates
- Blocks
- Disks and separators

## Frequently asked questions

### How does it differ from technical graphite?

Non-graphitized carbon retains a less crystalline structure than fully graphitized graphite. That reduces thermal conductivity and makes it suitable as a structural barrier or separator when heat dissipation is not desired.

### When to choose non-graphitized carbon over isostatic graphite?

When the application prioritizes insulation or thermal separation between process zones, mechanical stability and machinability, and does not require the high conductivity of isostatic or extruded graphite.