Clear All
System of Measurement System of Measurement |
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Shape Shape |
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![]() | Rod and Disc |
Material Material |
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Thermal Conductivity Thermal Conductivity |
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Maximum Temperature Maximum Temperature |
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Color Color |
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![]() | Gray |
Hardness Hardness |
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Fabrication Fabrication | Show |
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Fabrication Fabrication | Hide |
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Compressive Strength Compressive Strength |
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Dielectric Strength Dielectric Strength |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Tensile Strength Tensile Strength |
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Minimum Temperature Minimum Temperature |
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Density Density |
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Flexural Strength Flexural Strength |
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Porosity Porosity |
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Clarity Clarity |
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Opaque |
Low Thermal Expansion
Alumina-Silicate Ceramic Rods

- Color: Gray
- Temperature Range: -72° to 2010° F
- Fabrication: Unfired
- Porosity: 2%
- Compressive Strength: 25,000 psi
Also known as lava and wonderstone, this material is often used in applications that require high temperature resistance and low thermal expansion, such as standoffs and welding jigs.
For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Lg. | Each | |
1/8" | 0.000" to 0.015" | 3" | 0000000 | 000000 |
1/4" | 0.000" to 0.015" | 3" | 0000000 | 00000 |
3/8" | 0.000" to 0.015" | 6" | 0000000 | 00000 |
1/2" | 0.000" to 0.015" | 6" | 0000000 | 00000 |
5/8" | 0.000" to 0.015" | 6" | 0000000 | 00000 |
3/4" | 0.000" to 0.015" | 9 1/2" | 0000000 | 00000 |
7/8" | 0.000" to 0.015" | 9 1/2" | 0000000 | 00000 |
1" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
1 1/4" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
1 1/2" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
2" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
2 1/2" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
3" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
3 1/2" | 0.000" to 0.015" | 9 1/2" | 0000000 | 000000 |
4" | 0.000" to 0.015" | 9 1/2" | 00000000 | 00000000 |
5" | 0.000" to 0.015" | 9 1/2" | 0000000 | 00000000 |