Refractive index (nd) 1.47200 52 *ii
Dispersion (nF- nC) 0.00719 +!GJ
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 b9ud8wLE[
Thermal conductivity (W/(m * °C)) 1.14 1S(n3(KRk$
Average thermal capacity (KJ/ (kg * °C)) 0.83 V%{WH}
Maximal operation temperature (°C) .R@s6}C`}=
Short Term kS35X)-
Long Term s3T7M:DM4
Thermal stability sq;!5qK
500 eIEL';N6
450 p>O/H1US;
375 o*artMkG
Density (g/cm3) 2.23 )"?eug}D
Elastic modulus E (kN/mm3) 64 uts>4r>+
Hardness (HK) 480 :
h(Z\D_
Poission's Ratio 0.2 Yg?BcY\
Climatic resistance (ISO - 719 - HGB) Grade 1 Yo1]HG(kXB
Acid resistance Grade 1 pH2/."zE<
Alkali resistance Grade 1 \4LTViY]
Melting temperature (°C) 1680 Q lA?dXQ
Working Point (°C) 1252 QFnpp\K
Softening Point (°C) 820 ± 10 e/_QS}OA
Annealing Point (°C) 560 ± 10 Fc80HK5R
Stress Point (°C) 510 ± 10 gTgoS:M"_O
Surface Tension (dyn/cm) 340-350 (1252 °C) kxN
O9w
Dielectric constant (1MHz, 20°C) 4.6 eM
5#L,Y{
Dielectric loss (1MHz, 20°C) 37 x 10-4 ZW9OPwV
Dielectric strength (50MHz, 25°C) Kv/mm 16 Y+o\?|q-E
Color Code (λ5/λ80) 297.6/337.2 Gov.;hy
Volume Sensitivity (log ρ) V%)Tu{L
250°C mBJr*_p
350°C '
tHa5`
8.0 j>e RV ol
6.5 dC8}Ttc}
Environmental Protection Pb < 50 ppm /D1Lh_,2
As < 5 ppm 1<fW .Q)
Cd < 5 ppm *sZH3: