Ohara PBL1Y i-Line Optical Glass

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Ohara PBL1Y i-Line Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	i-Line High Homogeneity Glass. Boron is an important constituent. Information provided by Ohara Corporation.
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Physical Properties	Metric	English	Comments

Specific Gravity	2.95 g/cc	2.95 g/cc

Chemical Properties	Metric	English	Comments
Acid Class, SR	1.0	1.0

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	420 @Load 0.0999 kg	420 @Load 0.220 lb
Modulus of Elasticity	61.3 GPa	8890 ksi
Modulus of Rigidity	25.2 GPa	3660 ksi
Poissons Ratio	0.217	0.217
Abrasion	124	124	Aa

Thermal Properties	Metric	English	Comments
CTE, linear	9.30 µm/m-°C @Temperature -30.0 - 70.0 °C	5.17 µin/in-°F @Temperature -22.0 - 158 °F
	10.6 µm/m-°C @Temperature 100 - 300 °C	5.89 µin/in-°F @Temperature 212 - 572 °F
Thermal Conductivity	0.951 W/m-K @Temperature 35.0 °C	6.60 BTU-in/hr-ft²-°F @Temperature 95.0 °F
Transformation Temperature, Tg	406 °C	763 °F	per thermal expansion curve
Softening Point	567 °C	1050 °F	10^7.65 poise; JIS-R3104 and ASTM-C338
Annealing Point	396 °C	745 °F	10¹³ poise; ASTM-C336
Strain Point	361 °C	682 °F	10^14.5 poise; JIS-R3103 and ASTM-C336

Optical Properties	Metric	English	Comments
Refractive Index	1.51892 @Wavelength 2325.42 nm	1.51892 @Wavelength 2325.42 nm
	1.52371 @Wavelength 1970.09 nm	1.52371 @Wavelength 1970.09 nm
	1.52892 @Wavelength 1529.58 nm	1.52892 @Wavelength 1529.58 nm
	1.53374 @Wavelength 1128.64 nm	1.53374 @Wavelength 1128.64 nm
	1.53542 @Wavelength 1013.98 nm	1.53542 @Wavelength 1013.98 nm	nt (Hg t line)
	1.53845 @Wavelength 852.11 nm	1.53845 @Wavelength 852.11 nm	ns (Cs s line)
	1.54058 @Wavelength 768.19 nm	1.54058 @Wavelength 768.19 nm	nA' (K A' line)
	1.54256 @Wavelength 706.52 nm	1.54256 @Wavelength 706.52 nm	nr (He r line)
	1.54456 @Wavelength 656.27 nm	1.54456 @Wavelength 656.27 nm	nC (H C line)
	1.54513 @Wavelength 643.85 nm	1.54513 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.54566 @Wavelength 632.8 nm	1.54566 @Wavelength 632.8 nm	nHe-Ne
	1.54804 @Wavelength 589.29 nm	1.54804 @Wavelength 589.29 nm	nD (Na D line)
	1.54814 @Wavelength 587.56 nm	1.54814 @Wavelength 587.56 nm	nd (He D line)
	1.55099 @Wavelength 546.07 nm	1.55099 @Wavelength 546.07 nm	ne (Hg e line)
	1.55655 @Wavelength 486.13 nm	1.55655 @Wavelength 486.13 nm	nf (H F line)
	1.55725 @Wavelength 479.99 nm	1.55725 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.56242 @Wavelength 441.57 nm	1.56242 @Wavelength 441.57 nm	nHe-Cd
	1.56333 @Wavelength 435.835 nm	1.56333 @Wavelength 435.835 nm	ng (Hg g line)
	1.56911 @Wavelength 404.656 nm	1.56911 @Wavelength 404.656 nm	nh (Hg h line)
	1.57931 @Wavelength 365.015 nm	1.57931 @Wavelength 365.015 nm	ni (Hg i line)
	1.59092 @Wavelength 334 nm	1.59092 @Wavelength 334 nm
	1.59476 @Wavelength 326 nm	1.59476 @Wavelength 326 nm
Abbe Number	45.45	45.45	ν e
	45.73	45.73	ν d
Optical Dispersion	0.011986	0.011986	nF-nC
	0.012123	0.012123	nF'-nC'
Transmission, Visible	99.8 % @Wavelength 380 nm	99.8 % @Wavelength 380 nm
	99.9 % @Wavelength 390 nm	99.9 % @Wavelength 390 nm
	99.9 % @Wavelength 400 nm	99.9 % @Wavelength 400 nm
	99.9 % @Wavelength 420 nm	99.9 % @Wavelength 420 nm
	99.9 % @Wavelength 440 nm	99.9 % @Wavelength 440 nm
	99.9 % @Wavelength 460 nm	99.9 % @Wavelength 460 nm
	99.9 % @Wavelength 480 nm	99.9 % @Wavelength 480 nm
	99.9 % @Wavelength 500 nm	99.9 % @Wavelength 500 nm
	99.9 % @Wavelength 550 nm	99.9 % @Wavelength 550 nm
	99.9 % @Wavelength 600 nm	99.9 % @Wavelength 600 nm
	99.9 % @Wavelength 650 nm	99.9 % @Wavelength 650 nm
	99.9 % @Wavelength 700 nm	99.9 % @Wavelength 700 nm
IR Transmittance	88 % @Wavelength 2400 nm	88 % @Wavelength 2400 nm
	91.9 % @Wavelength 2200 nm	91.9 % @Wavelength 2200 nm
	98.3 % @Wavelength 1800 nm	98.3 % @Wavelength 1800 nm
	99.6 % @Wavelength 1600 nm	99.6 % @Wavelength 1600 nm
	99.8 % @Wavelength 1400 nm	99.8 % @Wavelength 1400 nm
	99.9 % @Wavelength 800 nm	99.9 % @Wavelength 800 nm
	99.9 % @Wavelength 900 nm	99.9 % @Wavelength 900 nm
	99.9 % @Wavelength 1000 nm	99.9 % @Wavelength 1000 nm
	99.9 % @Wavelength 1200 nm	99.9 % @Wavelength 1200 nm
UV Transmittance	29 % @Wavelength 310 nm	29 % @Wavelength 310 nm
	80 % @Wavelength 320 nm	80 % @Wavelength 320 nm
	95.4 % @Wavelength 330 nm	95.4 % @Wavelength 330 nm
	98.8 % @Wavelength 340 nm	98.8 % @Wavelength 340 nm
	99.5 % @Wavelength 350 nm	99.5 % @Wavelength 350 nm
	99.7 % @Wavelength 360 nm	99.7 % @Wavelength 360 nm
	99.7 % @Wavelength 365 nm	99.7 % @Wavelength 365 nm
	99.8 % @Wavelength 370 nm	99.8 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	1
coloring, λ 5	305
coloring, λ 80	325
Knoop Hardness Class	4
Melt Frequency	5
Ohara Code d	548457
Ohara Code e	551455
Ohara Status	Standard
Phosphate Resistance, PR	1.1
Photoelastic Constant (ß)	2.94
Relative Price	9.0		S-BSL7 = 1
Water Resistance, RW(P)	2
Weathering Resistance (Surface Method) W(S)max	2
Weathering Resistance (Surface Method) W(S)min	2
Yield Point, At (°C)	453		per thermal expansion curve

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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