Acid Proofing / Carbon Bricks
Impervious Carbon Bricks
Impervious is the >90% Carbon grade in Shanker Agencies’ carbon bricks range.
Grade
Impervious
Carbon content
>90%
Cold crushing strength
40 MPa
Bulk density
1.70 g/cc
Impervious technical specification
Typical values for Impervious carbon bricks. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.
| Property | Impervious |
|---|---|
| Carbon content | >90% |
| Bulk density | 1.70 g/cc |
| Apparent porosity | <2% (impregnated) |
| Cold crushing strength | 40 MPa |
Where Impervious is used
Blast furnace hearth & bottom
Acid / chemical reactor lining
Electrolytic cell lining
Anti-corrosion vessel lining
Towers handling strong acids (HF, H₃PO₄)
Pickling & phosphoric-acid plant equipment
Full carbon bricks range
Compare Impervious against every grade SAPL stocks in this family.
| Grade | Carbon content | Bulk density | Apparent porosity | Cold crushing strength |
|---|---|---|---|---|
| Carbon Brick | >90% | 1.55 g/cc | 16-24% | 30 MPa |
| Semi-Graphite | >92% | 1.65 g/cc | 14-20% | 35 MPa |
| Impervious | >90% | 1.70 g/cc | <2% (impregnated) | 40 MPa |
Installation notes
- 1Joint with carbon-based / furan resin cement compatible with the chemical service
- 2Keep out of oxidising atmospheres above ~400°C to prevent carbon burn-off
- 3Use impervious (resin-impregnated) grade where low permeability to acids is required
- 4Behind-brick membrane recommended for acid-vessel linings
Disclaimer: values are typical and compiled by Shanker Agencies Pvt. Ltd. from standard industry data and published manufacturer specifications. They are indicative, not a guarantee. Confirm the exact grade datasheet before specifying. For a certified datasheet or quotation, contact info@shankeragencies.com or +91 98999 57888.