Refractive index (nd) 1.47200 t9{EO#o'k
Dispersion (nF- nC) 0.00719 =,]M$M
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 xb>+~5 9:
Thermal conductivity (W/(m * °C)) 1.14 N `MQHQ1
Average thermal capacity (KJ/ (kg * °C)) 0.83 J6P
Tkm}^
Maximal operation temperature (°C) Ca|;8ggf
Short Term Xs_y!l
Long Term ;& +75n
Thermal stability t]XJq
500 c5pG?jr+d
450 (5
hu
W7v
375 u>#'Y+7
Density (g/cm3) 2.23 (#lS?+w)
Elastic modulus E (kN/mm3) 64 OwUbm0)h^V
Hardness (HK) 480 X=~QE}x
Poission's Ratio 0.2 nX'.'3
Climatic resistance (ISO - 719 - HGB) Grade 1 !y.7"G*
Acid resistance Grade 1 r>o6}Mx$
Alkali resistance Grade 1 :f:C*mYvu
Melting temperature (°C) 1680 `Fr$q1qae{
Working Point (°C) 1252 ]ghPbS@
Softening Point (°C) 820 ± 10 Tr)[q>
Annealing Point (°C) 560 ± 10 ~~mQ
Stress Point (°C) 510 ± 10 l:HuG!
Surface Tension (dyn/cm) 340-350 (1252 °C) )-gyDA
Dielectric constant (1MHz, 20°C) 4.6 M:E#}(
Dielectric loss (1MHz, 20°C) 37 x 10-4 ipG+qj/=
Dielectric strength (50MHz, 25°C) Kv/mm 16 5N0H^
Color Code (λ5/λ80) 297.6/337.2 O8%/Id
Volume Sensitivity (log ρ) fJKOuFK
250°C .rHO7c,P~
350°C k$c!J'qL&
8.0 _45"Z}Zx
6.5 VXp
X#O
Environmental Protection Pb < 50 ppm Lq.k?!D3uh
As < 5 ppm ]LjW,b"
Cd < 5 ppm r>\.b{wI