High Dense Calcium Silicate dibuat dari material calcium silicate dengan density 850 sampai 1000 kg/m3. Material mempunyai karakteristik “non-wetting” dan digunakan sebagai material yang bisa berhubungan langsung dengan metal cair, dan tahan sampai temperatur 1000 oC. Ada 2 macam high density Calcium Silicate board yaitu Glass fiber reinforced dan Carbon fiber reinforced.
Physical Properties:
| Item | Y-800 | Y-801 | |
| Type | Glass Fiber Reinforced | Carbon Fiber Reinforced | |
| Bulk density (kg/m3) | 850 - 950 | 850 - 950 | |
| Temp Limit (oC) | 1000 - 1100 | 1000 – 1100 | |
| Continuous Service Temp. (oC) | 850 | 850 | |
| Flexural Strength (Mpa) | 6.5 | 8.0 | |
| Comprssive Strength(break) 5% deformation (Mpa) | 15.50 Mpa & 12 MPa | 17 Mpa & 13 Mpa | |
| Coefficient of Thermal Expansion (oC) | 7 x 10-6 | 7 x 10-6 | |
| Thermal Conductivity (W/M.K) | |||
| 100 oC | 0.113 | 0.103 | |
| 200 oC | 0.12 | 0.114 | |
| 300 oC | 0.121 | 0.124 | |
| 400 oC | 0.125 | 0.133 | |
Chemical Analysis:
| SiO2 | : | 49 – 52 % |
| CaO | : | 39 – 42% |
| Al2O3 | : | 0.40 – 0.50 % |
| MgO | : | 0.5 – 0.7 % |
| Fe2O3 | : | 0.30 – 0.40 % |
| Ignition Loss | : | 5 – 9 % |
Keuntungan:
- Non-wetting and inert to corrosion in direct contact with a number of non-ferrous metals and alloys
- No reaction with lubricants and greases such as graphite or boron nitride
- Chemically stable in neutral and basic media
- Low thermal conductivity
- High thermal resistance and high mechanical strength
- Excellent workability and processability with special tools
- Free from asbestos, α-quartz and iron oxide
Area pemakaian:
- Melting and casting facilities for non-ferrous metals: for transport, distribution and casting in continuous and cyclical shaping processes.
- Furnace construction: load-bearing housings, linings in direct metal contact and for structural parts with high thermal and/or mechanical load
Chemical and process industry: collars, seals, spacer and intermediate rings, bushes, pipe supports and runs
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