Refractive index (nd) 1.47200 MDGcK/$')f
Dispersion (nF- nC) 0.00719 ]J~37 35]
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 G5kM0vs6L
Thermal conductivity (W/(m * °C)) 1.14 L!3{ASIN0
Average thermal capacity (KJ/ (kg * °C)) 0.83 Y^2`)':
Maximal operation temperature (°C) +}I[l,,xy
Short Term o3]B/
Long Term |\XjA4j
Thermal stability *~lD;{2
500 X>wB=z5PXK
450 E`=y9r*Z
375 ryW1OV6?_0
Density (g/cm3) 2.23 bqsb (C
Elastic modulus E (kN/mm3) 64
P@PZ m
Hardness (HK) 480 Ys+Dw-
Poission's Ratio 0.2 q4xB`G
Climatic resistance (ISO - 719 - HGB) Grade 1 {5#P1jlT
Acid resistance Grade 1 \-#~)LB]M
Alkali resistance Grade 1 ^h1VCyoR*
Melting temperature (°C) 1680 TEh]-x`
Working Point (°C) 1252 !jU<(eY
Softening Point (°C) 820 ± 10 {QM;%f
Annealing Point (°C) 560 ± 10 uQ vW@Tt
Stress Point (°C) 510 ± 10 _B8e1an
Surface Tension (dyn/cm) 340-350 (1252 °C) Y
H
2iV
Dielectric constant (1MHz, 20°C) 4.6 Z,lUO.
Dielectric loss (1MHz, 20°C) 37 x 10-4 o~NeS|a
Dielectric strength (50MHz, 25°C) Kv/mm 16 HdJLD+k/
Color Code (λ5/λ80) 297.6/337.2 fB3O zff
Volume Sensitivity (log ρ) h$f/NSct2
250°C nxsQDw\hy
350°C j<szQ%tJlI
8.0 bhOyx
6.5 _ZzN}!Mye
Environmental Protection Pb < 50 ppm = EyxM
As < 5 ppm CbQ@l@d]
Cd < 5 ppm +y6|Nq