Schott P-SF68 005210.619, Optical Glass

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Schott P-SF68 005210.619, Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	Information provided by SCHOTT.
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Physical Properties	Metric	English	Comments

Density	6.19 g/cc	0.224 lb/in³

Chemical Properties	Metric	English	Comments
Acid Class, SR	53.3	53.3
Alkali Class, AR	2.3	2.3
Stain Resistance Class, FR	5.0	5.0

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	404	404	HK (0.1/20)
Modulus of Elasticity	79.0 GPa	11500 ksi
Poissons Ratio	0.275	0.275
Shear Modulus	31.0 GPa	4500 ksi	Calculated

Thermal Properties	Metric	English	Comments
CTE, linear	8.40 µm/m-°C @Temperature -20.0 - 70.0 °C	4.67 µin/in-°F @Temperature -4.00 - 158 °F
	9.70 µm/m-°C @Temperature 30.0 - 200 °C	5.39 µin/in-°F @Temperature 86.0 - 392 °F
Specific Heat Capacity	0.370 J/g-°C	0.0884 BTU/lb-°F
Thermal Conductivity	0.650 W/m-K	4.51 BTU-in/hr-ft²-°F
Transformation Temperature, Tg	428 °C	802 °F
Softening Point	504 °C	939 °F	viscosity of 10^7.6 cP
Annealing Point	430 °C	806 °F	viscosity of 10¹³ cP

Optical Properties	Metric	English	Comments
Refractive Index	1.933 @Wavelength 2323.4 nm	1.933 @Wavelength 2323.4 nm
	1.939 @Wavelength 1970.1 nm	1.939 @Wavelength 1970.1 nm
	1.947 @Wavelength 1529.6 nm	1.947 @Wavelength 1529.6 nm
	1.959 @Wavelength 1060 nm	1.959 @Wavelength 1060 nm
	1.961 @Wavelength 1014 nm	1.961 @Wavelength 1014 nm
	1.97 @Wavelength 852.1 nm	1.97 @Wavelength 852.1 nm
	1.984 @Wavelength 706.5 nm	1.984 @Wavelength 706.5 nm
	1.991 @Wavelength 656.3 nm	1.991 @Wavelength 656.3 nm
	1.993 @Wavelength 643.8 nm	1.993 @Wavelength 643.8 nm
	1.995 @Wavelength 632.8 nm	1.995 @Wavelength 632.8 nm
	2.004 @Wavelength 589.3 nm	2.004 @Wavelength 589.3 nm
	2.005 @Wavelength 587.6 nm	2.005 @Wavelength 587.6 nm
	2.016 @Wavelength 546.1 nm	2.016 @Wavelength 546.1 nm
	2.039 @Wavelength 486.1 nm	2.039 @Wavelength 486.1 nm
	2.042 @Wavelength 480 nm	2.042 @Wavelength 480 nm
	2.07 @Wavelength 435.8 nm	2.07 @Wavelength 435.8 nm
Abbe Number	20.82	20.82	ve
	21	21	vd
Optical Dispersion	0.047867	0.047867	nf - nc
	0.048826	0.048826	nf' - nc'
Transmission, Visible	5.0 % @Thickness 25.0 mm, Wavelength 420 nm	5.0 % @Thickness 0.984 in, Wavelength 420 nm
	25 % @Thickness 25.0 mm, Wavelength 436 nm	25 % @Thickness 0.984 in, Wavelength 436 nm
	30.2 % @Thickness 10.0 mm, Wavelength 420 nm	30.2 % @Thickness 0.394 in, Wavelength 420 nm
	50 % @Thickness 25.0 mm, Wavelength 460 nm	50 % @Thickness 0.984 in, Wavelength 460 nm
	57.4 % @Thickness 10.0 mm, Wavelength 436 nm	57.4 % @Thickness 0.394 in, Wavelength 436 nm
	75.8 % @Thickness 10.0 mm, Wavelength 460 nm	75.8 % @Thickness 0.394 in, Wavelength 460 nm
	78 % @Thickness 25.0 mm, Wavelength 500 nm	78 % @Thickness 0.984 in, Wavelength 500 nm
	90.5 % @Thickness 10.0 mm, Wavelength 500 nm	90.5 % @Thickness 0.394 in, Wavelength 500 nm
	94 % @Thickness 25.0 mm, Wavelength 546 nm	94 % @Thickness 0.984 in, Wavelength 546 nm
	97.3 % @Thickness 25.0 mm, Wavelength 580 nm	97.3 % @Thickness 0.984 in, Wavelength 580 nm
	97.6 % @Thickness 10.0 mm, Wavelength 546 nm	97.6 % @Thickness 0.394 in, Wavelength 546 nm
	98.5 % @Thickness 25.0 mm, Wavelength 620 nm	98.5 % @Thickness 0.984 in, Wavelength 620 nm
	98.9 % @Thickness 25.0 mm, Wavelength 660 nm	98.9 % @Thickness 0.984 in, Wavelength 660 nm
	98.9 % @Thickness 10.0 mm, Wavelength 580 nm	98.9 % @Thickness 0.394 in, Wavelength 580 nm
	99.3 % @Thickness 25.0 mm, Wavelength 700 nm	99.3 % @Thickness 0.984 in, Wavelength 700 nm
	99.4 % @Thickness 10.0 mm, Wavelength 620 nm	99.4 % @Thickness 0.394 in, Wavelength 620 nm
	99.6 % @Thickness 10.0 mm, Wavelength 660 nm	99.6 % @Thickness 0.394 in, Wavelength 660 nm
	99.7 % @Thickness 10.0 mm, Wavelength 700 nm	99.7 % @Thickness 0.394 in, Wavelength 700 nm
IR Transmittance	56 % @Thickness 25.0 mm, Wavelength 2500 nm	56 % @Thickness 0.984 in, Wavelength 2500 nm
	78 % @Thickness 25.0 mm, Wavelength 2325 nm	78 % @Thickness 0.984 in, Wavelength 2325 nm
	79.3 % @Thickness 10.0 mm, Wavelength 2500 nm	79.3 % @Thickness 0.394 in, Wavelength 2500 nm
	90.5 % @Thickness 10.0 mm, Wavelength 2325 nm	90.5 % @Thickness 0.394 in, Wavelength 2325 nm
	94 % @Thickness 25.0 mm, Wavelength 1970 nm	94 % @Thickness 0.984 in, Wavelength 1970 nm
	97.6 % @Thickness 10.0 mm, Wavelength 1970 nm	97.6 % @Thickness 0.394 in, Wavelength 1970 nm
	99 % @Thickness 25.0 mm, Wavelength 1530 nm	99 % @Thickness 0.984 in, Wavelength 1530 nm
	99.6 % @Thickness 10.0 mm, Wavelength 1530 nm	99.6 % @Thickness 0.394 in, Wavelength 1530 nm
	99.8 % @Thickness 25.0 mm, Wavelength 1060 nm	99.8 % @Thickness 0.984 in, Wavelength 1060 nm
	99.9 % @Thickness 10.0 mm, Wavelength 1060 nm	99.9 % @Thickness 0.394 in, Wavelength 1060 nm
UV Transmittance	0.70 % @Thickness 10.0 mm, Wavelength 400 nm	0.70 % @Thickness 0.394 in, Wavelength 400 nm
	3.6 % @Thickness 10.0 mm, Wavelength 405 nm	3.6 % @Thickness 0.394 in, Wavelength 405 nm

Descriptive Properties
Acid resistance class	4		according to JOGIS
Climatic resistance	1
Grindability	298
Phosphate resistance	2
Stress optical coefficient	1.61		[10^-6mm²/N]
Water resistance class	1		according to JOGIS

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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