Refractive index (nd) 1.47200 V=-hqo(
Dispersion (nF- nC) 0.00719 tFrNnbmlQ
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 %;-r->
Thermal conductivity (W/(m * °C)) 1.14 5y8ajae:
Average thermal capacity (KJ/ (kg * °C)) 0.83 ^>/] Qi
Maximal operation temperature (°C) p/4}SU
Short Term O@7={)6qc
Long Term rpn&.#KS
Thermal stability 7a5G,C#QQ
500 b[;Zl<
450 QKt+Orz
375 \ x>#bql+
Density (g/cm3) 2.23 $QC^hC
Elastic modulus E (kN/mm3) 64 g( -}M`
Hardness (HK) 480 d.:.f_|
Poission's Ratio 0.2 %YV3-W8S0
Climatic resistance (ISO - 719 - HGB) Grade 1 nZP%Z=p7
Acid resistance Grade 1 Y. 1dk
Alkali resistance Grade 1 &?(472<f**
Melting temperature (°C) 1680 Q2jl61d_9
Working Point (°C) 1252 geJO#;
Softening Point (°C) 820 ± 10 E*]%@6tH
Annealing Point (°C) 560 ± 10 .N~YVul[a*
Stress Point (°C) 510 ± 10 /}&@1
Surface Tension (dyn/cm) 340-350 (1252 °C) AiOz1Er
Dielectric constant (1MHz, 20°C) 4.6 Rf0F`D k
Dielectric loss (1MHz, 20°C) 37 x 10-4 c,FhI~>R
Dielectric strength (50MHz, 25°C) Kv/mm 16 vI1UFD
D
Color Code (λ5/λ80) 297.6/337.2 Zzea
Volume Sensitivity (log ρ) jdW#;
]7+y
250°C }v$T1Cw
350°C J]mq|vE
8.0 <h[l)-86
6.5 A;e0h)F$-
Environmental Protection Pb < 50 ppm /Zm5fw9
As < 5 ppm [&H?--I
Cd < 5 ppm X0+M|8: