China Custom 0.2mm 0.3mm 0.4mm 0.5mm 0.7mm 1mm Alkali Free Borosilicate Af32 Glass

Introduction:
The AF32 glass' low thermal expansion, its high thermal shock resistance and its ability to withstand temperatures up to 450 °C for long periods .Excellent surface shape accuracy

l Product features:
a)High heat resistance
b)The whole band range has excellent transmission performance
c)Good resistance to strong alkali
d)Excellent surface shape accuracy

l Typical application:
Micro-optics
MEMS (pressure sensor, accelerometer...)
Wafer level packaging (image sensor package...)
Bioengineering (microfluidics, DNA analysis...)
PLC wafer cover
And many other customer-specific applications.

Technical parameter:
a) Material: BOROFLOAT®33, PYREX7740, quartz glass, Corning Eagle-XG, B270, D262T, AF32,Soda lime
b) Standard thickness: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm, 1.0mm, 1.5mm (thickness tolerance ± 0.02mm)
c) Standard size: Φ2", Φ3", Φ4", Φ5", Φ6", Φ8", Φ12" (other sizes can be customized)
d) Appearance: 60/40
e) Surface roughness (Ra) <1.5nm
f) Parallelism <0.01mm
g) Each edge is blunt C0.05~0.2mm
h) Crack <0.2mm, not crackable
i) The surface is clean and must not be imprinted or stained. It is packaged under a clean workbench and packaged in a special box.

Technical parameters: Density(25ºC)2.2g/cm2
Thermal expansion(ISO 7991)3.25´10-6k-1Light transmittance91%Softening point820ºCShort time use<10h550ºCLong time use>=10h450ºCRefractive index
(587.6nm)1.47140Knoop hardness480

Coefficient of Linear Thermal Expansionα (20 - 300 °C)3.25 x 10-6 K-1(ISO 7991)RemarksSpecific Thermal
CapacityCp (20 - 100°C)0.83 KJ x (kg x K)-1The maximum temperatures in use indicated apply only if the following RTG and RTS values are observed at the same time.
Specific Thermal
Conductivityλ (90°C)1.2 W x (m x K)-1For short-term usageδ max (< 10 h)550°CFor long-term usageδmax (≥ 10 h)450°C

Viscosity of Borosilicate Glasses:

Working Point104 dPas1270 °CSoftening Point10 7.6 dPas820 °CAnnealing Point10 13 dPas560 °CStrain Point10 14.5 dPas518 °CTransformation Temperature (Tg) 525 °C

Selected Standard Lasers and Related Wavelengths:

Wavelength
(nm)Laser
MediumWavelength
(nm)Laser
MediumWavelength
(nm)Laser
Medium308XeCI488Ar1047Nd:YLF325HeCd514.5Ar1053Nd:YLF337N2532Nd:YAG1064Nd:YAG350xeF632.8HeNe1153HeNe351.1Ar694.3Ruby1319Nd:YAG363.8Ar730-780Alexandrite1730Er:YLF427N2850Er:YLF2060Ho:YLF441.6HeCd905GaAs10640CO2

Wavelength λ(nm)435.8479.9546.1Index of Refraction n1.480151.476761.47311Wavelength λ(nm)589.3643.8656.3Index of Refraction n1.471331.469531.46916Abbe ConstantVe=(ne-1)/(nF'-nC')65.41 Refractive Indexnd(λ587.6 nm)1.47140 DispersionnF-nC71.4x10-4 Stress-optical
Coefficentin in Mpa-1K4.0x10-6mm2N-1MPa-1