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Wollastonite
– Calcium
Magnesium Silicate
Wollastonite is
a calcium magnesium silicate. Wollastonite compositions can be formulated
with 20 to 40 percent porosity. This variable porosity adjusts the overall
strength versus thermal shock. Wollastonite is also inert to alkali
and glaze vapor attack below 1,850° F. Wollastonite is most often
used for kiln furniture. Shapes shown are not to scale.
| Wollastonite
Properties |
Units |
ACT
600 |
| Material |
|
Wollastonite |
| General
Application |
|
Porous
Refractories, Kiln Furniture & Supports for Glazing Ceramics |
| Color
(Fired) |
|
Tan/Brown |
| Porosity |
% |
20-40 |
| Density |
gm/cm3 |
2.7-2.9 |
| Flexural
Strength |
psi |
10,000-18,000 |
| Comprehensive
Strength |
psi |
30,000-45,000 |
| Tensile
Strength |
psi |
- |
| Linear
Coefficient of Thermal Expansion |
(cm/cm/°C)
25-300°C
25-700°C
|
11.0
X 10-6
11.8 X
10-6 |
| Dielecctric
Constant at 25°C |
1
MH
10 MH |
3.0
4.0 |
| Dielectric
Strength |
Volt/mil |
150 |
| Te
Value |
°F
°C |
750
400 |
| Thermal
Conductivity at 25°C |
cal/sec/cm2/cm/°C |
0.002 |
| Thermal
Shock |
|
Good |
Safe
Use
Temperature |
°F
°C |
2200-2400
1200-1315 |
Above values are
test specimen results and actual shapes may vary in value.
We can work with other formulations as well.
|
| Request
a Quote |
| Call:
724.353.1585
Fax: 724.353.1050
Submit
Online Form |
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New |
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| Quality |
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9002 Registered by Quality System Registrar
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