B270 B 270 Ultra White Glass

Product Title：B270 B 270 Ultra White Glass

B 270 Ultra White Glass

Table1.
Nature of optical	Through rate
nd	1.5230
ne	1.5251
ve	58.3
2mm	91.7%
4mm	91.6%
15mm	91.0%

Table2.
Mechanical performance	Standard value
Density	2.55g/cm³
Knoop hardness HK 100	542kg/mm²
Young's modulus E	71.5kN/mm²
Poisson's ratio μ	0.208

Table3.
Thermal properties	Standard value
Strain point	511°C
Annealing Point	541°C
Softening point	724°C
Coefficient of thermal expansion	9.4×10E^-6/K

Table4.
Chemical performance	Standard value
Deliquescence（ISO719）	HGB3
Acid resistance（ISO1776）	2
Alkaline resistance（ISO695）	A2

B 270 spectrum of ultra-white glass

b270's Spectra

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