Refractive index (nd) 1.47200 ZjveXrx
Dispersion (nF- nC) 0.00719 Yu:!l>
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 %b>Ee>rdD
Thermal conductivity (W/(m * °C)) 1.14 H|z:j35\
Average thermal capacity (KJ/ (kg * °C)) 0.83 SquuK1P=
Maximal operation temperature (°C) <P_B|Y4N/
Short Term I(va;hG<o
Long Term >dfk2.6e
Thermal stability R]"
jr
500 aA=7x&z@
450 Qsg([K
375 g_e_L39
Density (g/cm3) 2.23 {7^D!lis
Elastic modulus E (kN/mm3) 64 (3N;-
Hardness (HK) 480 :xZ^Jq91
Poission's Ratio 0.2 bj_oA
i
Climatic resistance (ISO - 719 - HGB) Grade 1 cm`x;[e6l
Acid resistance Grade 1 eVRjU
Alkali resistance Grade 1 ]dL#k>$0q
Melting temperature (°C) 1680 ]]50c
Working Point (°C) 1252 kz^?!l)X0
Softening Point (°C) 820 ± 10 UgD&tD0fp
Annealing Point (°C) 560 ± 10 \s_`ZEB
Stress Point (°C) 510 ± 10 c}mWAZ=wF
Surface Tension (dyn/cm) 340-350 (1252 °C) c;7`]}fGu
Dielectric constant (1MHz, 20°C) 4.6 :\KJw
Dielectric loss (1MHz, 20°C) 37 x 10-4 lO=~&_
Dielectric strength (50MHz, 25°C) Kv/mm 16 o,_R;'\E[a
Color Code (λ5/λ80) 297.6/337.2 kB=\a(
Volume Sensitivity (log ρ) q]wP^;\Jl
250°C `Zd\d:Wyv
350°C
t&H3yV
8.0 nE=,=K~
6.5 +t*Ks_V,*
Environmental Protection Pb < 50 ppm CYZ0F5+t
As < 5 ppm ,_I#+XiXY
Cd < 5 ppm E\vW>g*W