Refractive index (nd) 1.47200 r`]7S_t5T
Dispersion (nF- nC) 0.00719 b*9e1/]
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 >rwYDT#m]
Thermal conductivity (W/(m * °C)) 1.14 hU,$|_WDy
Average thermal capacity (KJ/ (kg * °C)) 0.83 >.Q0Tx!P
Maximal operation temperature (°C) ",Wf uz
Short Term b~!om
Long Term ,o&<WMD
Thermal stability $T*KaX\{B
500 [&n|\!
450 K<,Y^3]6?
375 Q=.g1$LP
Density (g/cm3) 2.23 /v&`!nKu
Elastic modulus E (kN/mm3) 64 $DV-Ieb
Hardness (HK) 480 d5, FM
Poission's Ratio 0.2 3@X|Gs'_S
Climatic resistance (ISO - 719 - HGB) Grade 1 p#b{xK
Acid resistance Grade 1 A;%kl`~iyz
Alkali resistance Grade 1
-HT L5
Melting temperature (°C) 1680 -q(:%;
Working Point (°C) 1252 luF#OP C
Softening Point (°C) 820 ± 10 s<{GpWT8
Annealing Point (°C) 560 ± 10 gY\mXM*^
Stress Point (°C) 510 ± 10 &V;x 4
Surface Tension (dyn/cm) 340-350 (1252 °C) A}eOR=E
Dielectric constant (1MHz, 20°C) 4.6 9&(.x8d,a
Dielectric loss (1MHz, 20°C) 37 x 10-4 |Y4q+sDW
Dielectric strength (50MHz, 25°C) Kv/mm 16 *'^:S#=
Color Code (λ5/λ80) 297.6/337.2 j@g!R!7)
Volume Sensitivity (log ρ) NlFo$Y
250°C E<a.LW@
350°C <"ae4
8.0 Et0&E
6.5 i -V0Lm/
Environmental Protection Pb < 50 ppm _U=S]2QW
As < 5 ppm %jgg59
Cd < 5 ppm 5|m9:Hv[#