Ohara S-PHM52Q Optical Glass

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Ohara S-PHM52Q Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	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	420 @Load 0.0999 kg
Modulus of Elasticity	84.0 GPa
Modulus of Rigidity	32.7 GPa
Poissons Ratio	0.285
Abrasion	313	Aa

Thermal Properties	Original Value	Comments
CTE, linear	8.80 µm/m-°C @Temperature -30.0 - 70.0 °C
	10.3 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	0.738 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	577 °C	per thermal expansion curve
Softening Point	650 °C	10^7.65 poise; JIS-R3104 and ASTM-C338
Annealing Point	559 °C	10¹³ poise; ASTM-C336
Strain Point	539 °C	10^14.5 poise; JIS-R3103 and ASTM-C336

Optical Properties	Original Value	Comments
Refractive Index	1.58996 @Wavelength 2325.42 nm
	1.59514 @Wavelength 1970.09 nm
	1.60064 @Wavelength 1529.58 nm
	1.60545 @Wavelength 1128.64 nm
	1.60703 @Wavelength 1013.98 nm	nt (Hg t line)
	1.60977 @Wavelength 852.11 nm	ns (Cs s line)
	1.61164 @Wavelength 768.19 nm	nA' (K A' line)
	1.61334 @Wavelength 706.52 nm	nr (He r line)
	1.61503 @Wavelength 656.27 nm	nC (H C line)
	1.6155 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.61594 @Wavelength 632.8 nm	nHe-Ne
	1.61791 @Wavelength 589.29 nm	nD
	1.618 @Wavelength 587.56 nm	nd (He D line)
	1.62033 @Wavelength 546.07 nm	ne (Hg e line)
	1.62479 @Wavelength 486.13 nm	nf (H F line)
	1.62534 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.62938 @Wavelength 441.57 nm	nHe-Cd
	1.63008 @Wavelength 435.835 nm	ng (Hg g line)
	1.63448 @Wavelength 404.656 nm	nh (Hg h line)
	1.64195 @Wavelength 365.015 nm	ni (Hg i line)
Abbe Number	63.02	ν e
	63.32	ν d
Optical Dispersion	0.002971	nd-nC; Partial Dispersion
	0.003394	nC-nA'; Partial Dispersion
	0.00439	nh-ng; Partial Dispersion
	0.004826	ne-nC'; Partial Dispersion
	0.005017	nF'-ne; Partial Dispersion
	0.005296	ng-nF; Partial Dispersion
	0.005298	ne-nC; Partial Dispersion
	0.007997	nC-nt; Partial Dispersion
	0.008469	nC'-nt; Partial Dispersion
	0.00976	nF-nC
	0.009843	nF'-nC'
	0.011862	ni-ng; Partial Dispersion
	0.012085	ng-nd; Partial Dispersion
	0.016603	ni-nF'; Partial Dispersion
Transmission, Visible	96.1 % @Thickness 10.0 mm, Wavelength 380 nm	Internal Transmission
	97.8 % @Thickness 10.0 mm, Wavelength 390 nm	Internal Transmission
	98.6 % @Thickness 10.0 mm, Wavelength 400 nm	Internal Transmission
	99.1 % @Thickness 10.0 mm, Wavelength 420 nm	Internal Transmission
	99.2 % @Thickness 10.0 mm, Wavelength 440 nm	Internal Transmission
	99.4 % @Thickness 10.0 mm, Wavelength 460 nm	Internal Transmission
	99.6 % @Thickness 10.0 mm, Wavelength 480 nm	Internal Transmission
	99.7 % @Thickness 10.0 mm, Wavelength 500 nm	Internal Transmission
	99.7 % @Thickness 10.0 mm, Wavelength 650 nm	Internal Transmission
	99.7 % @Thickness 10.0 mm, Wavelength 700 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 550 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 600 nm	Internal Transmission
IR Transmittance	85 % @Thickness 10.0 mm, Wavelength 2400 nm	Internal Transmission
	90 % @Thickness 10.0 mm, Wavelength 2200 nm	Internal Transmission
	96 % @Thickness 10.0 mm, Wavelength 2000 nm	Internal Transmission
	97.8 % @Thickness 10.0 mm, Wavelength 1800 nm	Internal Transmission
	99.1 % @Thickness 10.0 mm, Wavelength 1600 nm	Internal Transmission
	99.5 % @Thickness 10.0 mm, Wavelength 1400 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 800 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 900 nm	Internal Transmission
	99.8 % @Thickness 10.0 mm, Wavelength 1000 nm	Internal Transmission
	99.9 % @Thickness 10.0 mm, Wavelength 1200 nm	Internal Transmission
UV Transmittance	2.0 % @Thickness 10.0 mm, Wavelength 320 nm	Internal Transmission
	17 % @Thickness 10.0 mm, Wavelength 330 nm	Internal Transmission
	44 % @Thickness 10.0 mm, Wavelength 340 nm	Internal Transmission
	69 % @Thickness 10.0 mm, Wavelength 350 nm	Internal Transmission
	85 % @Thickness 10.0 mm, Wavelength 360 nm	Internal Transmission
	92.4 % @Thickness 10.0 mm, Wavelength 370 nm	Internal Transmission

Descriptive Properties
Acid Resistance, Powder Method, RA(P)	3
CCI	0.00 B
	0.31 G
	0.31 R
coloring, λ 5	325
coloring, λ 80	365
Coloring, Internal Transmission λ 0.05	322
Coloring, Internal Transmission λ 0.80	357
Knoop Hardness Class	4
Ohara Code d	618633
Ohara Code e	620630
Phosphate Resistance, PR	4
Photoelastic Constant (ß)	1.41
Water Resistance, RW(P)	1
Weathering Resistance (Surface Method) W(S)max	1
Yield Point, At (°C)	614	per thermal expansion curve

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CZOHARA784 / 281623

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