Refractive index (nd) 1.47200 3LK%1+)4
Dispersion (nF- nC) 0.00719 Fb_S&!
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 e3(<8]`b[
Thermal conductivity (W/(m * °C)) 1.14 kW-81
Average thermal capacity (KJ/ (kg * °C)) 0.83 8l)
Maximal operation temperature (°C) RQ'
H!(K
Short Term ?pwE0N^
Long Term `E>vG-9
Thermal stability <^><3U`
500 .[j%sGdKl
450 bhg}-dto
375 b1^cD6sT+
Density (g/cm3) 2.23 |4>:M\h
Elastic modulus E (kN/mm3) 64 8T5k-HwE
Hardness (HK) 480 e!0OW7kV
Poission's Ratio 0.2 w~@[r4W
Climatic resistance (ISO - 719 - HGB) Grade 1 n["
9|
Acid resistance Grade 1 _l&ucA
Alkali resistance Grade 1 /1.rz{wpb
Melting temperature (°C) 1680 OyVm(%Z
Working Point (°C) 1252 P Jo
Softening Point (°C) 820 ± 10 kC$I2[ t!
Annealing Point (°C) 560 ± 10 Ft-6m%
Stress Point (°C) 510 ± 10 C0m\SNR
Surface Tension (dyn/cm) 340-350 (1252 °C) BQNp$]5s
Dielectric constant (1MHz, 20°C) 4.6 77aX-e*=E
Dielectric loss (1MHz, 20°C) 37 x 10-4 1f//wk|
Dielectric strength (50MHz, 25°C) Kv/mm 16 3%
vis\~^
Color Code (λ5/λ80) 297.6/337.2 )%j"
Volume Sensitivity (log ρ) tOg=zXm
250°C ;z>p8N
350°C jD9lz-Y@
8.0 ^gg!Me
6.5 z`#_F}v,m/
Environmental Protection Pb < 50 ppm X;EJ&g/
As < 5 ppm -Ktwo_V*
Cd < 5 ppm =AkX4k