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| Custom sizes: If we don't have the size of the oxide bonded shelf that you want, we can order it for you. The minimum order is 10 shelves. Custom shelf prices are $0.19 / sq. in., 1/2" thick. Allow 2 - 3 months for delivery. | |||
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Imported oxide bonded silicon carbide shelves (dark grey) are coated on one side with kiln wash. The design incorporates side slits to prolong shelf life by relieving thermal expansion stress. Typical properties and composition are listed below. |
Imported nitride bonded shelves (mottled light grey) are supplied uncoated. The design incorporates side slits to prolong shelf life by relieving thermal expansion stress. Typical properties and composition are listed below. | ||
| Properties & Composition |
Oxide Bonded |
Nitride Bonded | |
| Density (g/cm3) | 2.65 - 2.75 | >2.62 | |
| Porosity (%) | <14 | 16 | |
| Cold Crushing Strength (Mpa) | >90 | >150 | |
| Cold Modulus of Rupture @ 20 C (Mpa) | >40 | 40 | |
| Hot Modulus of Rupture @ 1400 C (Mpa) | >56 | 43 | |
| Coefficient of Thermal Expansion (25-1400 C)) | 4.8 x 10 -6 | no data | |
| Load Melting Temperature | >1700 C (3092 F) | no data | |
| Maximum Working Temperature | 1400 C (2552 F) | 1360 C (2480 F) | |
| Thermal Conductivity @ 1200 C (Kcal/mh C) | 14.0 | no data | |
| SiC (%) | >89 | 75 | |
| Si3N4 (%) | ---. | 20 | |
| SiO2 (%) | no data | 1 | |
| Si (%) | no data | 0.5 | |
| Fe2O3 (%) | 0.3 | 0.3 | |
| CaO (%) | no data | 0.3 | |
| Al2O3 (%) | no data | 0.3 | |
