Refractive index (nd) 1.47200 :Z x|=
Dispersion (nF- nC) 0.00719 SN]g4}K-
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 k>7bPR5Mw
Thermal conductivity (W/(m * °C)) 1.14 *")*w> R
Average thermal capacity (KJ/ (kg * °C)) 0.83 o OC&w0
Maximal operation temperature (°C) .FC+
Short Term Z4rk$K'=1w
Long Term *ra>Kl0
Thermal stability A^#\=ZBg1
500 v/=\(
450 \P")Eh =d
375 U| VL+9#hd
Density (g/cm3) 2.23 *HUXvX|-%
Elastic modulus E (kN/mm3) 64 a(=lQ(v/?
Hardness (HK) 480 Ie|5,qw
E
Poission's Ratio 0.2 AI Kz]J0;
Climatic resistance (ISO - 719 - HGB) Grade 1 ([}08OW@
Acid resistance Grade 1 G]N3OIw&8
Alkali resistance Grade 1 "j8)l4}
Melting temperature (°C) 1680 nj1o!+9>$
Working Point (°C) 1252 <o V[[wl
Softening Point (°C) 820 ± 10 [0aC]XQZ
Annealing Point (°C) 560 ± 10 )Jdku}Pf
Stress Point (°C) 510 ± 10 ZWo~!Z [Y
Surface Tension (dyn/cm) 340-350 (1252 °C) %y|pVN!U
Dielectric constant (1MHz, 20°C) 4.6 _> x }MW+
Dielectric loss (1MHz, 20°C) 37 x 10-4 #o7)eKeQ
Dielectric strength (50MHz, 25°C) Kv/mm 16 Mgi~j.[
Color Code (λ5/λ80) 297.6/337.2 d9BFeq8
Volume Sensitivity (log ρ) / t`\b
[
250°C E #B$.K
350°C #QIY+muN
8.0 Z\xnPhV
6.5 n6+h;+8;]
Environmental Protection Pb < 50 ppm J?yasjjgP
As < 5 ppm Sk/@w[
Cd < 5 ppm BV:Ca 34&
