Schott N-KZFS11 638424.320, Optical Glass

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Schott N-KZFS11 638424.320, Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	Information provided by SCHOTT.
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Physical Properties	Original Value	Comments

Density	3.20 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	3.4
Alkali Class, AR	1.0
Stain Resistance Class, FR	1.0

Mechanical Properties	Original Value	Comments
Hardness, Knoop	530	HK (0.1/20)
Modulus of Elasticity	79.0 GPa
Poissons Ratio	0.251
Shear Modulus	31.6 GPa	Calculated

Thermal Properties	Original Value	Comments
CTE, linear	6.60 µm/m-°C @Temperature -30.0 - 70.0 °C
	7.60 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.690 J/g-°C
Thermal Conductivity	0.810 W/m-K
Transformation Temperature, Tg	551 °C
Annealing Point	554 °C	viscosity of 10¹³ cP

Optical Properties	Original Value	Comments
Refractive Index	1.596 @Wavelength 2323.4 nm
	1.604 @Wavelength 1970.1 nm
	1.612 @Wavelength 1529.6 nm
	1.62 @Wavelength 1060 nm
	1.621 @Wavelength 1014 nm
	1.625 @Wavelength 852.1 nm
	1.63 @Wavelength 706.5 nm
	1.633 @Wavelength 643.8 nm
	1.633 @Wavelength 656.3 nm
	1.634 @Wavelength 632.8 nm
	1.637 @Wavelength 587.6 nm
	1.637 @Wavelength 589.3 nm
	1.641 @Wavelength 546.1 nm
	1.648 @Wavelength 486.1 nm
	1.649 @Wavelength 480 nm
	1.656 @Wavelength 435.8 nm
	1.663 @Wavelength 404.7 nm
	1.676 @Wavelength 365 nm
	1.69 @Wavelength 344.1 nm
Abbe Number	42.2	ve
	42.41	vd
Optical Dispersion	0.015038	nf - nc
	0.015198	nf' - nc'
Transmission, Visible	97.5 % @Thickness 25.0 mm, Wavelength 420 nm
	97.8 % @Thickness 25.0 mm, Wavelength 436 nm
	98.2 % @Thickness 25.0 mm, Wavelength 460 nm
	98.9 % @Thickness 25.0 mm, Wavelength 500 nm
	99 % @Thickness 10.0 mm, Wavelength 420 nm
	99.1 % @Thickness 10.0 mm, Wavelength 436 nm
	99.2 % @Thickness 25.0 mm, Wavelength 620 nm
	99.2 % @Thickness 25.0 mm, Wavelength 660 nm
	99.2 % @Thickness 25.0 mm, Wavelength 580 nm
	99.3 % @Thickness 25.0 mm, Wavelength 546 nm
	99.3 % @Thickness 10.0 mm, Wavelength 460 nm
	99.4 % @Thickness 25.0 mm, Wavelength 700 nm
	99.6 % @Thickness 10.0 mm, Wavelength 500 nm
	99.7 % @Thickness 10.0 mm, Wavelength 580 nm
	99.7 % @Thickness 10.0 mm, Wavelength 546 nm
	99.7 % @Thickness 10.0 mm, Wavelength 660 nm
	99.7 % @Thickness 10.0 mm, Wavelength 620 nm
	99.8 % @Thickness 10.0 mm, Wavelength 700 nm
IR Transmittance	18.3 % @Thickness 25.0 mm, Wavelength 2500 nm
	50.7 % @Thickness 10.0 mm, Wavelength 2500 nm
	53.5 % @Thickness 25.0 mm, Wavelength 2325 nm
	77.9 % @Thickness 10.0 mm, Wavelength 2325 nm
	91.4 % @Thickness 25.0 mm, Wavelength 1970 nm
	96.5 % @Thickness 10.0 mm, Wavelength 1970 nm
	97.7 % @Thickness 25.0 mm, Wavelength 1530 nm
	99.1 % @Thickness 10.0 mm, Wavelength 1530 nm
	99.9 % @Thickness 10.0 mm, Wavelength 1060 nm
	99.9 % @Thickness 25.0 mm, Wavelength 1060 nm
UV Transmittance	2.0 % @Thickness 25.0 mm, Wavelength 310 nm
	4.8 % @Thickness 10.0 mm, Wavelength 300 nm
	15 % @Thickness 25.0 mm, Wavelength 320 nm
	23 % @Thickness 10.0 mm, Wavelength 310 nm
	45 % @Thickness 25.0 mm, Wavelength 334 nm
	46.8 % @Thickness 10.0 mm, Wavelength 320 nm
	72.7 % @Thickness 10.0 mm, Wavelength 334 nm
	73 % @Thickness 25.0 mm, Wavelength 350 nm
	88 % @Thickness 25.0 mm, Wavelength 365 nm
	88.2 % @Thickness 10.0 mm, Wavelength 350 nm
	91 % @Thickness 25.0 mm, Wavelength 370 nm
	94 % @Thickness 25.0 mm, Wavelength 380 nm
	95 % @Thickness 10.0 mm, Wavelength 365 nm
	95.7 % @Thickness 25.0 mm, Wavelength 390 nm
	96.3 % @Thickness 10.0 mm, Wavelength 370 nm
	96.8 % @Thickness 25.0 mm, Wavelength 400 nm
	97.1 % @Thickness 25.0 mm, Wavelength 405 nm
	97.6 % @Thickness 10.0 mm, Wavelength 380 nm
	98.3 % @Thickness 10.0 mm, Wavelength 390 nm
	98.7 % @Thickness 10.0 mm, Wavelength 400 nm
	98.8 % @Thickness 10.0 mm, Wavelength 405 nm

Descriptive Properties
Climatic resistance	1
Grindability	3
	74	according to JOGIS
Phosphate resistance	1
Stress optical coefficient	4.21	[10^-6mm²/N]

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