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Technical Data Sheet
Ceramic Heat Transfer Media: Ceramic Saddles
Chemical Composition
SiO2 |
Al2O3 |
Fe2O3 |
MgO |
CaO |
K2O+Na2O+CaO |
Other |
<73% |
17 — 25% |
<1.0% |
<0.5% |
<5.0% |
<2 — 4% |
<0.1% |
Physical Properties
| Specific Gravity: 2.25 — 2.35 g/cm3 |
| Water Absorption: <0.3% |
| Acid resistance: >99.6% |
| Porosity: >1% |
| Moh's Hardness: >6.5 |
| Thermal conductivity: 0.90 — 1.0 W/MK |
| Specific heat capacity: 850 — 900 kJ/kg°C |
| Softening point: 1400 °C |
| Max. operating temp.: 1350 °C |
Geometric Properties
Nominal Size
(inches, neck diam.) |
Pieces per m3/1000 |
Packing Density |
Free Volume |
Surface Area |
3/8" |
1560 |
900 kg/m3 |
63% |
825 m2/m3 |
1/2" |
610 |
780 kg/m3 |
68% |
647 m2/m3 |
5/8" |
269 |
700 kg/m3 |
71% |
535 m2/m3 |
3/4" |
146 |
670 kg/m3 |
75% |
350 m2/m3 |
1" |
59.0 |
650 kg/m3 |
77% |
254 m2/m3 |
1 1/2" |
19.7 |
580 kg/m3 |
80% |
180 m2/m3 |
2" |
8.24 |
550 kg/m3 |
79% |
120 m2/m3 |
3" |
2.40 |
530 kg/m3 |
75% |
91 m2/m3 |
Thermal Shock Test
- Randomly pick 100-200 pieces of saddles from the batch or shipment.
- For each sample selected, heat it up to 820°C and maintain them at this temperature for 30 minutes.
- Drop the hot pieces into cold 20 °C water.
- Repeat steps two (2) and three (3) ten (10) times on each and every piece in the sample lot.
- Examine the pieces and count the percentage that shows clear signs of breakage and/or cracking.
— Our standard is less than seven (7%) percent.
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