Ohara S-PHM53 Optical Glass

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Ohara S-PHM53 Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	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	3.51 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	51

Mechanical Properties	Original Value	Comments
Hardness, Knoop	390 @Load 0.0999 kg
Modulus of Elasticity	70.8 GPa
Modulus of Rigidity	27.5 GPa
Poissons Ratio	0.285
Abrasion	378	Aa

Thermal Properties	Original Value	Comments
CTE, linear	9.30 µm/m-°C @Temperature -30.0 - 70.0 °C
	10.9 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	0.615 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	610 °C	per thermal expansion curve
Softening Point	681 °C	10^7.65 poise; JIS-R3104 and ASTM-C338

Optical Properties	Original Value	Comments
Refractive Index	1.57583 @Wavelength 2325.42 nm
	1.58092 @Wavelength 1970.09 nm
	1.58634 @Wavelength 1529.58 nm
	1.59103 @Wavelength 1128.64 nm
	1.59256 @Wavelength 1013.98 nm	nt (Hg t line)
	1.59519 @Wavelength 852.11 nm	ns (Cs s line)
	1.59697 @Wavelength 768.19 nm	nA' (K A' line)
	1.59858 @Wavelength 706.52 nm	nr (He r line)
	1.60019 @Wavelength 656.27 nm	nC (H C line)
	1.60064 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.60106 @Wavelength 632.8 nm	nHe-Ne
	1.60292 @Wavelength 589.29 nm	nD (Na D line)
	1.60300 @Wavelength 587.56 nm	nd (He D line)
	1.60520 @Wavelength 546.07 nm	ne (Hg e line)
	1.60940 @Wavelength 486.13 nm	nf (H F line)
	1.60993 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.61372 @Wavelength 441.57 nm	nHe-Cd
	1.61438 @Wavelength 435.835 nm	ng (Hg g line)
	1.61850 @Wavelength 404.656 nm	nh (Hg h line)
	1.62547 @Wavelength 365.015 nm	ni (Hg i line)
Abbe Number	65.15	ν e
	65.44	ν d
Optical Dispersion	0.002812	nd-nC; Partial Dispersion
	0.003223	nC-nA'; Partial Dispersion
	0.004114	nh-ng; Partial Dispersion
	0.004563	ne-nC'; Partial Dispersion
	0.004726	nF'-ne; Partial Dispersion
	0.004977	ng-nF; Partial Dispersion
	0.005011	ne-nC; Partial Dispersion
	0.00763	nC-nt; Partial Dispersion
	0.008078	nC'-nt; Partial Dispersion
	0.009215	nF-nC
	0.009289	nF'-nC'
	0.01109	ni-ng; Partial Dispersion
	0.01138	ng-nd; Partial Dispersion
	0.015545	ni-nF'; Partial Dispersion
Transmission, Visible	93.5 % @Wavelength 380 nm
	96.3 % @Wavelength 390 nm
	97.7 % @Wavelength 400 nm
	98.6 % @Wavelength 420 nm
	98.7 % @Wavelength 440 nm
	98.9 % @Wavelength 460 nm
	99.2 % @Wavelength 480 nm
	99.4 % @Wavelength 500 nm
	99.6 % @Wavelength 650 nm
	99.6 % @Wavelength 700 nm
	99.7 % @Wavelength 600 nm
	99.8 % @Wavelength 550 nm
IR Transmittance	83 % @Wavelength 2400 nm
	87 % @Wavelength 2200 nm
	96.7 % @Wavelength 1800 nm
	98.7 % @Wavelength 1600 nm
	99.3 % @Wavelength 1400 nm
	99.6 % @Wavelength 1000 nm
	99.7 % @Wavelength 800 nm
	99.7 % @Wavelength 900 nm
	99.7 % @Wavelength 1200 nm
UV Transmittance	3.0 % @Wavelength 310 nm
	10 % @Wavelength 320 nm
	25 % @Wavelength 330 nm
	45 % @Wavelength 340 nm
	64 % @Wavelength 350 nm
	78 % @Wavelength 360 nm
	88 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	5
CCI	0.00 B
	0.56 G
	0.56 R
coloring, λ 5	300
coloring, λ 80	360
Coloring, Internal Transmission λ 0.05	313
Coloring, Internal Transmission λ 0.80	362
Knoop Hardness Class	4
Melt Frequency	2
Ohara Code d	603655
Ohara Code e	605651
Ohara Status	Preferred
Phosphate Resistance, PR	4
Photoelastic Constant (ß)	1.21
Relative Price	6	S-BSL7 = 1
Water Resistance, RW(P)	1
Weathering Resistance (Surface Method) W(S)max	1
Weathering Resistance (Surface Method) W(S)min	2
Yield Point, At (°C)	644	per thermal expansion curve

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CZOHARA937 / 192202

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