Ohara S-FPL51Y i-Line Optical Glass

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Ohara S-FPL51Y i-Line Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	i-Line High Homogeneity Glass. ECO optical glass that does not contain any lead or arsenic. Information provided by Ohara Corporation.
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Physical Properties	Original Value	Comments

Specific Gravity	3.66 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	51

Mechanical Properties	Original Value	Comments
Hardness, Knoop	380 @Load 0.0999 kg
Modulus of Elasticity	71.6 GPa
Modulus of Rigidity	27.5 GPa
Poissons Ratio	0.302
Abrasion	476	Aa

Thermal Properties	Original Value	Comments
CTE, linear	13.6 µm/m-°C @Temperature -30.0 - 70.0 °C
	16.1 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	0.780 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	448 °C	per thermal expansion curve

Optical Properties	Original Value	Comments
Refractive Index	1.47980 @Wavelength 2325.42 nm
	1.48286 @Wavelength 1970.09 nm
	1.48617 @Wavelength 1529.58 nm
	1.48913 @Wavelength 1128.64 nm
	1.49011 @Wavelength 1013.98 nm	nt (Hg t line)
	1.49182 @Wavelength 852.11 nm	ns (Cs s line)
	1.49299 @Wavelength 768.19 nm	nA' (K A' line)
	1.49407 @Wavelength 706.52 nm	nr (He r line)
	1.49513 @Wavelength 656.27 nm	nC (H C line)
	1.49543 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.49571 @Wavelength 632.8 nm	nHe-Ne
	1.49695 @Wavelength 589.29 nm	nD (Na D line)
	1.49700 @Wavelength 587.56 nm	nd (He D line)
	1.49847 @Wavelength 546.07 nm	ne (Hg e line)
	1.50126 @Wavelength 486.13 nm	nf (H F line)
	1.50160 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.50412 @Wavelength 441.57 nm	nHe-Cd
	1.50455 @Wavelength 435.835 nm	ng (Hg g line)
	1.50727 @Wavelength 404.656 nm	nh (Hg h line)
	1.51185 @Wavelength 365.015 nm	ni (Hg i line)
	1.51673 @Wavelength 334 nm
	1.51826 @Wavelength 326 nm
Abbe Number	80.74	ν e
	81.14	ν d
Optical Dispersion	0.006125	nF-nC
	0.006174	nF'-nC'
Transmission, Visible	99.9 % @Wavelength 380 nm
	99.9 % @Wavelength 390 nm
	99.9 % @Wavelength 400 nm
	99.9 % @Wavelength 420 nm
	99.9 % @Wavelength 440 nm
	99.9 % @Wavelength 460 nm
	99.9 % @Wavelength 480 nm
	99.9 % @Wavelength 500 nm
	99.9 % @Wavelength 550 nm
	99.9 % @Wavelength 600 nm
	99.9 % @Wavelength 650 nm
	99.9 % @Wavelength 700 nm
IR Transmittance	99.5 % @Wavelength 2400 nm
	99.6 % @Wavelength 2200 nm
	99.8 % @Wavelength 1000 nm
	99.8 % @Wavelength 1200 nm
	99.8 % @Wavelength 1800 nm
	99.9 % @Wavelength 800 nm
	99.9 % @Wavelength 900 nm
	99.9 % @Wavelength 1400 nm
	99.9 % @Wavelength 1600 nm
UV Transmittance	4.0 % @Wavelength 240 nm
	7.0 % @Wavelength 250 nm
	21 % @Wavelength 260 nm
	34 % @Wavelength 270 nm
	51 % @Wavelength 280 nm
	67 % @Wavelength 290 nm
	80 % @Wavelength 300 nm
	89 % @Wavelength 310 nm
	94.3 % @Wavelength 320 nm
	97.1 % @Wavelength 330 nm
	98.6 % @Wavelength 340 nm
	99.4 % @Wavelength 350 nm
	99.6 % @Wavelength 360 nm
	99.7 % @Wavelength 365 nm
	99.8 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	4
coloring, λ 5	-
coloring, λ 80	310
Knoop Hardness Class	4
Melt Frequency	5
Ohara Code d	497811
Ohara Code e	498808
Ohara Status	Standard
Phosphate Resistance, PR	4.2
Relative Price	42.5	S-BSL7 = 1
Water Resistance, RW(P)	1
Weathering Resistance (Surface Method) W(S)max	2
Weathering Resistance (Surface Method) W(S)min	3
Yield Point, At (°C)	471	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 go back to viewing the property data in MatWeb's normal format.

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