Refractive index (nd) 1.47200 dZi"$ g
Dispersion (nF- nC) 0.00719 s2Mb[#:a"
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 $2W%2rZ
Thermal conductivity (W/(m * °C)) 1.14 >}+/{(K"E|
Average thermal capacity (KJ/ (kg * °C)) 0.83 tmQH|'>>
Maximal operation temperature (°C) T6 '`l?H`;
Short Term N[s}qmPha
Long Term x>Zn?YR,"
Thermal stability .zi_[
500 ^J$2?!~
450 DRcNdO/1E
375 N<~t3/Nm
Density (g/cm3) 2.23 e" St_z(
Elastic modulus E (kN/mm3) 64 C?lcGt!H
Hardness (HK) 480 ^s|6vd;PD=
Poission's Ratio 0.2 Z'"tB/=W
Climatic resistance (ISO - 719 - HGB) Grade 1 ["h5!vj
Acid resistance Grade 1 :Zlwp6
Alkali resistance Grade 1 "wNJ
Melting temperature (°C) 1680 3j\1S1
Working Point (°C) 1252 FoN|i"*l
Softening Point (°C) 820 ± 10 r>o63Q:
Annealing Point (°C) 560 ± 10 5`~PR
:dN
Stress Point (°C) 510 ± 10 HMSO=)@+
Surface Tension (dyn/cm) 340-350 (1252 °C) 6}d.5^7lr
Dielectric constant (1MHz, 20°C) 4.6 0cj>mj1M
Dielectric loss (1MHz, 20°C) 37 x 10-4 R%?9z 8-
Dielectric strength (50MHz, 25°C) Kv/mm 16 Xu%'Z".>:
Color Code (λ5/λ80) 297.6/337.2 59h)-^!
Volume Sensitivity (log ρ) ML|FQ
250°C %J+E/
350°C .yz}ROmN^
8.0 Y$"O
VC
6.5 <g$~1fa
Environmental Protection Pb < 50 ppm As'=tIro
As < 5 ppm hb}+A=A=+
Cd < 5 ppm aDU<wxnSvO