Refractive index (nd) 1.47200 z1FL8=
Dispersion (nF- nC) 0.00719 %]!?{U\*k
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 7BS/T
Thermal conductivity (W/(m * °C)) 1.14 pJn>oGeJ&
Average thermal capacity (KJ/ (kg * °C)) 0.83 $82zy q
Maximal operation temperature (°C) %xHu,*
Short Term Bu':2"7
Long Term dX0x
Kk%#
Thermal stability
ZRO.bMgZF
500 E}t-N
450 [&Lxz~W][
375 TtZrttCE6
Density (g/cm3) 2.23 CM"s9E8y
Elastic modulus E (kN/mm3) 64 z30= ay1
Hardness (HK) 480 /CbkqNV
Poission's Ratio 0.2 [XxA.S)x3
Climatic resistance (ISO - 719 - HGB) Grade 1 ^&HI+M
Acid resistance Grade 1 ijg,'a~3E
Alkali resistance Grade 1 IN>TsTo
Melting temperature (°C) 1680 =O;eY ?
Working Point (°C) 1252 S;BP`g<l=
Softening Point (°C) 820 ± 10 (KZUvsS k
Annealing Point (°C) 560 ± 10
nMeS CX
Stress Point (°C) 510 ± 10 ,I=O"z>9
Surface Tension (dyn/cm) 340-350 (1252 °C) 80cm6?,xu
Dielectric constant (1MHz, 20°C) 4.6 (Y&R0jt
Dielectric loss (1MHz, 20°C) 37 x 10-4 eMztjN
Dielectric strength (50MHz, 25°C) Kv/mm 16 !SN6
?Xy
Color Code (λ5/λ80) 297.6/337.2 :3:)E
Volume Sensitivity (log ρ) W%w82@'
250°C %sYk0~E
350°C ;>sq_4_
8.0 qgh]@JJh
6.5 XPrY`,kN
Environmental Protection Pb < 50 ppm EccFx7h
As < 5 ppm Ed4_<:
Cd < 5 ppm
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