Schott N-PSK53 620635.360, Optical Glass

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Schott N-PSK53 620635.360, Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	Information provided by SCHOTT.
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Physical Properties	Original Value	Comments

Density	3.60 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	52.3
Alkali Class, AR	1.2
Stain Resistance Class, FR	1.0

Mechanical Properties	Original Value	Comments
Hardness, Knoop	440	HK (0.1/20)
Modulus of Elasticity	78.0 GPa
Poissons Ratio	0.288
Shear Modulus	30.3 GPa	Calculated

Thermal Properties	Original Value	Comments
CTE, linear	9.40 µm/m-°C @Temperature -30.0 - 70.0 °C
	10.9 µm/m-°C @Temperature 20.0 - 300 °C
Transformation Temperature, Tg	618 °C
Softening Point	709 °C	viscosity of 10^7.6 cP
Annealing Point	606 °C	viscosity of 10¹³ cP

Optical Properties	Original Value	Comments
Refractive Index	1.592 @Wavelength 2325.4 nm
	1.597 @Wavelength 1970.1 nm
	1.602 @Wavelength 1529.6 nm
	1.608 @Wavelength 1060 nm
	1.609 @Wavelength 1014 nm
	1.611 @Wavelength 852.1 nm
	1.615 @Wavelength 706.5 nm
	1.617 @Wavelength 643.8 nm
	1.617 @Wavelength 656.3 nm
	1.618 @Wavelength 632.8 nm
	1.62 @Wavelength 587.6 nm
	1.62 @Wavelength 589.3 nm
	1.622 @Wavelength 546.1 nm
	1.626 @Wavelength 486.1 nm
	1.627 @Wavelength 480 nm
	1.632 @Wavelength 435.8 nm
	1.636 @Wavelength 404.7 nm
	1.644 @Wavelength 365 nm
	1.652 @Wavelength 344.1 nm
Abbe Number	63.19	ve
	63.48	vd
Optical Dispersion	0.009769	nf - nc
	0.009851	nf' - nc'
Transmission, Visible	97.9 % @Thickness 25.0 mm, Wavelength 420 nm
	98.2 % @Thickness 25.0 mm, Wavelength 436 nm
	98.6 % @Thickness 25.0 mm, Wavelength 460 nm
	99.2 % @Thickness 25.0 mm, Wavelength 620 nm
	99.2 % @Thickness 10.0 mm, Wavelength 420 nm
	99.2 % @Thickness 25.0 mm, Wavelength 500 nm
	99.3 % @Thickness 25.0 mm, Wavelength 660 nm
	99.3 % @Thickness 10.0 mm, Wavelength 436 nm
	99.4 % @Thickness 10.0 mm, Wavelength 460 nm
	99.4 % @Thickness 25.0 mm, Wavelength 700 nm
	99.4 % @Thickness 25.0 mm, Wavelength 580 nm
	99.5 % @Thickness 25.0 mm, Wavelength 546 nm
	99.7 % @Thickness 10.0 mm, Wavelength 500 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
	99.8 % @Thickness 10.0 mm, Wavelength 580 nm
	99.8 % @Thickness 10.0 mm, Wavelength 546 nm
IR Transmittance	29 % @Thickness 25.0 mm, Wavelength 2500 nm
	51 % @Thickness 25.0 mm, Wavelength 2325 nm
	60.9 % @Thickness 10.0 mm, Wavelength 2500 nm
	76.4 % @Thickness 10.0 mm, Wavelength 2325 nm
	80 % @Thickness 25.0 mm, Wavelength 1970 nm
	91.5 % @Thickness 10.0 mm, Wavelength 1970 nm
	95.6 % @Thickness 25.0 mm, Wavelength 1530 nm
	98.2 % @Thickness 10.0 mm, Wavelength 1530 nm
	99.4 % @Thickness 25.0 mm, Wavelength 1060 nm
	99.8 % @Thickness 10.0 mm, Wavelength 1060 nm
UV Transmittance	3.0 % @Thickness 25.0 mm, Wavelength 320 nm
	6.1 % @Thickness 10.0 mm, Wavelength 310 nm
	20 % @Thickness 25.0 mm, Wavelength 334 nm
	23 % @Thickness 10.0 mm, Wavelength 320 nm
	52.5 % @Thickness 10.0 mm, Wavelength 334 nm
	53 % @Thickness 25.0 mm, Wavelength 350 nm
	77.6 % @Thickness 10.0 mm, Wavelength 350 nm
	78 % @Thickness 25.0 mm, Wavelength 365 nm
	90 % @Thickness 25.0 mm, Wavelength 380 nm
	90.5 % @Thickness 10.0 mm, Wavelength 365 nm
	92.8 % @Thickness 10.0 mm, Wavelength 370 nm
	93 % @Thickness 25.0 mm, Wavelength 370 nm
	94 % @Thickness 25.0 mm, Wavelength 390 nm
	95.9 % @Thickness 10.0 mm, Wavelength 380 nm
	96.4 % @Thickness 25.0 mm, Wavelength 400 nm
	97 % @Thickness 25.0 mm, Wavelength 405 nm
	97.6 % @Thickness 10.0 mm, Wavelength 390 nm
	98.5 % @Thickness 10.0 mm, Wavelength 400 nm
	98.8 % @Thickness 10.0 mm, Wavelength 405 nm

Descriptive Properties
Climatic resistance	2
Grindability	6	ISO 12844
Phosphate resistance	4.3
Stress optical coefficient	1.16	[10^-6mm²/N]

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