SINDANYO®
H91 & L21
Sindanyo® H91 and L21 are portland cement based insulation materials that have been formulated to provide a long campaign life in demanding thermal and electrical applications, where high strength in a machined format is required.
Both products are asbestos free, have good insulation properties and are non-combustible.
H91 & L21 have low thermal conductivity which ensures consistent thermal performance.
Sindanyo® products have good compressive and mechanical strength which is retained when operating towards their maximum service temperatures.
Both grades also have very good impact resistance and toughness and can be easily cut, threaded and machined to make intricate parts.
Other benefits include:
- Asbestos free
- Resistant to most acids/alkalis
- Machinable
- Easily threaded or tapped
- Good wear resistance
- High compressive strength
- Electrically insulating
USED IN
- Top Plates
- End Boards
- Arc Chutes
- Coil Supports
- Brazing and Soldering Plates
- Muffle Plates
- Grippers
- Dead Plates
- Terminal Covers
Typical Composition
- Wollastonite,
- Ordinary Portland Cement (OPC)
- Crystalline Silica
- Quartz
- Glass
| KEY DATA | |||
|---|---|---|---|
| GRADE | H91 | L21 | |
| DENSITY | kg/m3 | 1750 | 2000 |
| STRENGTH | |||
| Flexural | MPa | 13 | 20 |
| Compressive 24hrs @ 700˚C | MPa | 37 | |
| MAXIMUM TEMPERATURE | ˚C | 700 | 230 |
| THERMAL CONDUCTIVITY @ 750˚C | W/mK | 0.5 | 0.5 |
| ELECTRICAL STRENGTH 90˚C in air | kV/mm | 2.81 | 1.7 |
| SURFACE BREAKDOWN 90˚C in air | kV | 15 | |
| The data provided is taken from average test results conducted under standard procedures and conditions and should not be used for specification purposes. | |||
