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High Density Heat and Arc Resistant Cement Board
Established in the year 1918, we have attained position as a renowned trader and exporter of premium quality High Density Boards. These boards are designed and manufactured by our vendors utilizing selected raw asbestos fibre and cement. Our vendors test the whole range of these boards on a series of quality parameters prior to dispatch it from their end. Offered High Density Boards are available in various shapes and dimensions as per the specific requirements of clients.
Features:
Durable finish standards
Compact design
Light weight
Stiffness
Property | | Unit | Nominal thickness(mm) 3.0-5.0 6.4-12.5 over 12.5 | ||
Density | (Nominal) | gms/cc | 1.95 | 1.95 | 1.95 |
Tensile Strength | ( min. ) | kgf/cm2 | 200 | 190 | 180 |
Shear Strength | ( min. ) | kgf/cm2 | 400 | 380 | 350 |
Flexural Strength | ( min. ) | kgf/cm2 | 450 | 410 | 350 |
Ultimate Crushing Strength | ( min. ) | kgf/cm2 | 1500 | 1400 | 1250 |
Compression Yield | ( max. ) | % | 5 | 4 | 3.5 |
Water Absorption | ( max. ) | % | 15 | 14 | 13 |
Property | Unit | Nominal thickness(mm) 3.0-5.0 6.4-12.5 over 12.5 | ||
Dielectric Strength in Air@90oC (min.) | kV/mm | 1.7 | 1 | 0.8 |
Surface Breakdown in Air@ 90oC (min.) | kV | >10 | >10 | >10 |
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Thermal Properties
Property | Unit | Nominal thickness(mm) 3.0-5.0 6.4-12.5 over 12.5 | ||
Carbon Arc Test | Secs. | 120 | 120 | 120 |
Spirit Burner Test | DOES NOT IGNITE | |||
Thermal Conductivity | kcal/mh oC | 0.6 | 0.6 | 0.6 |
Continuous Temp. Usage | oC | 350 | 350 | 350 |