光学性能 Optical property | |||
折射率 (nd (λ587.6 nm)) Refractiive Index |
阿贝值 (ve = (ne– 1) / (nF‘ – nC‘)) Abbe Number |
色散 Dispersion |
应力光弹系数 (in (nm/cm)/MPa) Stress Photoelastic Coefficient |
1.5200 | 62.4 | 1.5156 | 31.6 |
热学性能 Thermal property | |
项目Item | 值Value |
线性热膨胀系数 α (20 - 300 °C) Coefficient of Linear Thermal Expansion |
3.2x 10-6 K-1 * |
比热容 Cp (20 - 100 °C) Specific Heat Capacity |
0.8 kJ/(kg·K) |
转变温度in ℃ Transformation temperature |
717 |
机械性能 Mechanical property | |
项目Item | 值Value |
密度ρ (25 °C) Density | 2.43 g/cm3 |
弹性系数 G Torsion Modulus | 30 kN/mm2 |
泊松比 Poisson's ratio | 0.24 |
努氏硬度HK0.1/2 Knoop Hardness | 490 |
弯曲强度HK0.2/25 Vickers hardness | 540 |
电学性能 Electrical property | ||
项目Item | 值Value | |
介电常数(εr) Dielectric Constant(25℃,1 MHz) |
5.1 | |
介电损耗(tanδ) Leakage Constant(25℃,1 MHz) |
28×10-4 | |
电阻率对数(Ω·cm alternate current 50 Hz) Electric Volume Resistivity |
250℃ | 7.9*1011 |
电阻率对数(Ω·cm alternate current 50 Hz) Electric Volume Resistivity |
350℃ | 1.1*1010 |
Diameter | 2inch | 3inch | 4inch | 5inch | 6inch | 8inch | 12inch |
Thickness (um) | Depends on Request | ||||||
Material | AF32 | ||||||
Grade/Brand | Schott® | ||||||
Surface Finished | DSP、SSP、DSL | ||||||
TTV (um) | <5 | <5 | <5 | <5 | <5 | <10 | <15 |
Bow/Warp (um) | <20 | <20 | <30 | <30 | <30 | <40 | <60 |
Ra (nm) | <1 | ||||||
S/D (um) | 40/20 | ||||||
特殊指标: 超平玻璃(Ultra-flat glass wafer) TTV<1um 超薄玻璃(Ultra-thin glass wafer) Thickness:0.1-0.3um 超光滑玻璃(Ultra-smooth glass wafer )Ra≤0.2nm |