1. Basic Information
| Item | Specification |
|---|---|
| Material Type | Glass-Ceramic |
| Brand | Corning® |
| Grade | PYROCERAM® 9606 |
| Appearance | Opaque, Light Gray |
| Density | ≈ 2.6 g/cm³ |
2. Thermal Properties
| Item | Specification |
|---|---|
| CTE (25–300°C) | ≈ 4.7 × 10⁻⁶ /°C |
| CTE (25–700°C) | ≈ 5.7 × 10⁻⁶ /°C |
| Max. Service Temperature | ≈ 1200°C (short-term) |
| Thermal Conductivity (20°C) | 3.98 W/(m·K) |
| Specific Heat (20°C) | 0.85 J/(g·K) |
3. Thermal Shock & Stability
| Item | Specification |
|---|---|
| Thermal Shock Resistance | Excellent |
| Rain Erosion Resistance | High (radome-grade) |
| Particle Erosion Resistance | High |
| Long-Term High-Temp Stability | Stable up to ~1000°C |
| Softening Behavior | No softening below 1200°C |
4. Mechanical Properties
| Item | Specification |
|---|---|
| Young’s Modulus | ≈ 120 GPa |
| Shear Modulus | ≈ 49 GPa |
| Poisson’s Ratio | 0.24 |
| Knoop Hardness | ≈ 698 kg/mm² |
| Flexural Strength (MOR) | ≈ 240 MPa |
5. Dielectric Properties
| Item | Specification |
|---|---|
| Dielectric Constant (25°C, 8.5 GHz) | ≈ 5.6 |
| Loss Tangent (25°C, 8.5 GHz) | ≈ 0.0003 |
| Dielectric Stability vs. Temp. | Very stable up to 1000°C |
| Volume Resistivity (25°C) | > 10¹⁴ Ω·cm |
| RF Transparency | Excellent (radome application) |
6. Optical Properties
| Item | Specification |
|---|---|
| Appearance | Opaque, White to Light Gray |
| Optical Transparency | Not optically transparent |
| Surface Finish Capability | Grindable & Polishable |
| IR Emissivity | Moderate to High |
| Primary Optical Use | Structural, Not Imaging |
7. Chemical Properties
| Item | Specification |
|---|---|
| Water Resistance | Excellent |
| Acid Resistance | Good (except HF) |
| Alkali Resistance | Good |
| Oxidation Resistance (High Temp) | Excellent |
| HF Resistance | Poor (attacked by HF) |
8. Typical Applications
| Field | Application |
|---|---|
| Defense | Missile Radomes & RF Windows |
| Aerospace | High-Temperature Structural Components |
| Industrial | Heat-Resistant Mechanical Parts |
| Power & Energy | High-Temp Insulators & Supports |
| Science | High-Temperature Test Fixtures |
