Refractive index (nd) 1.47200 ]u+MTW;
Dispersion (nF- nC) 0.00719 y0<Uu
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 >V(zJ
Thermal conductivity (W/(m * °C)) 1.14 "A;s56 }'&
Average thermal capacity (KJ/ (kg * °C)) 0.83 ym\(PCa5`
Maximal operation temperature (°C) c5("-xB
Short Term ),=@q+{E{
Long Term oU8>Llt=$
Thermal stability JkU1daTe
500 {b1UX9y
450 &1_U1
375 nd:E9:
Density (g/cm3) 2.23 ZHCr2^w6
Elastic modulus E (kN/mm3) 64 .5.8;/
/
Hardness (HK) 480 ~].ggcl`w
Poission's Ratio 0.2 g` [` P@
Climatic resistance (ISO - 719 - HGB) Grade 1 >Q=Ukn;k
Acid resistance Grade 1 nLj&Uf&
Alkali resistance Grade 1 $o.Kn9\
Melting temperature (°C) 1680 ! RPb|1Y}+
Working Point (°C) 1252 P?
(vW&B
Softening Point (°C) 820 ± 10 H8f]}
Annealing Point (°C) 560 ± 10
%H& ].47
Stress Point (°C) 510 ± 10 \0ov[T N.>
Surface Tension (dyn/cm) 340-350 (1252 °C) ^P?vkO"pB?
Dielectric constant (1MHz, 20°C) 4.6 1CkdpYjsj
Dielectric loss (1MHz, 20°C) 37 x 10-4 B_k2u
Dielectric strength (50MHz, 25°C) Kv/mm 16 b{M}5~e=B
Color Code (λ5/λ80) 297.6/337.2 OQScW2a&
Volume Sensitivity (log ρ) FW#P*}#
250°C ,3HcCuT
350°C s]H^wrg&
8.0 (e9fm|n!)|
6.5 R*9NR,C
Environmental Protection Pb < 50 ppm pZk6w1d!
As < 5 ppm }"_j0ax
Cd < 5 ppm u[")*\CP