Ohara S-BAM12 Optical Glass

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Ohara S-BAM12 Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	Boron is an important constituent. ECO optical glass that does not contain any lead or arsenic. Information provided by Ohara Corporation.
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Physical Properties	Metric	English	Comments

Specific Gravity	3.18 g/cc	3.18 g/cc

Chemical Properties	Metric	English	Comments
Acid Class, SR	3.2	3.2

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	550 @Load 0.0999 kg	550 @Load 0.220 lb
Modulus of Elasticity	90.4 GPa	13100 ksi
Modulus of Rigidity	36.1 GPa	5240 ksi
Poissons Ratio	0.253	0.253
Abrasion	144	144	Aa

Thermal Properties	Metric	English	Comments
CTE, linear	7.60 µm/m-°C @Temperature -30.0 - 70.0 °C	4.22 µin/in-°F @Temperature -22.0 - 158 °F
	9.10 µm/m-°C @Temperature 100 - 300 °C	5.06 µin/in-°F @Temperature 212 - 572 °F
Thermal Conductivity	0.954 W/m-K @Temperature 35.0 °C	6.62 BTU-in/hr-ft²-°F @Temperature 95.0 °F
Transformation Temperature, Tg	608 °C	1130 °F	per thermal expansion curve
Softening Point	717 °C	1320 °F	10^7.65 poise; JIS-R3104 and ASTM-C338
Annealing Point	592 °C	1100 °F	10¹³ poise; ASTM-C336
Strain Point	565 °C	1050 °F	10^14.5 poise; JIS-R3103 and ASTM-C336

Optical Properties	Metric	English	Comments
Refractive Index	1.60480 @Wavelength 2325.42 nm	1.60480 @Wavelength 2325.42 nm
	1.61040 @Wavelength 1970.09 nm	1.61040 @Wavelength 1970.09 nm
	1.61653 @Wavelength 1529.58 nm	1.61653 @Wavelength 1529.58 nm
	1.62223 @Wavelength 1128.64 nm	1.62223 @Wavelength 1128.64 nm
	1.62422 @Wavelength 1013.98 nm	1.62422 @Wavelength 1013.98 nm	nt (Hg t line)
	1.62781 @Wavelength 852.11 nm	1.62781 @Wavelength 852.11 nm	ns (Cs s line)
	1.63033 @Wavelength 768.19 nm	1.63033 @Wavelength 768.19 nm	nA' (K A' line)
	1.63268 @Wavelength 706.52 nm	1.63268 @Wavelength 706.52 nm	nr (He r line)
	1.63506 @Wavelength 656.27 nm	1.63506 @Wavelength 656.27 nm	nC (H C line)
	1.63573 @Wavelength 643.85 nm	1.63573 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.63635 @Wavelength 632.8 nm	1.63635 @Wavelength 632.8 nm	nHe-Ne
	1.63917 @Wavelength 589.29 nm	1.63917 @Wavelength 589.29 nm	nD (Na D line)
	1.63930 @Wavelength 587.56 nm	1.63930 @Wavelength 587.56 nm	nd (He D line)
	1.64268 @Wavelength 546.07 nm	1.64268 @Wavelength 546.07 nm	ne (Hg e line)
	1.64930 @Wavelength 486.13 nm	1.64930 @Wavelength 486.13 nm	nf (H F line)
	1.65014 @Wavelength 479.99 nm	1.65014 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.65631 @Wavelength 441.57 nm	1.65631 @Wavelength 441.57 nm	nHe-Cd
	1.65740 @Wavelength 435.835 nm	1.65740 @Wavelength 435.835 nm	ng (Hg g line)
	1.66433 @Wavelength 404.656 nm	1.66433 @Wavelength 404.656 nm	nh (Hg h line)
	1.67665 @Wavelength 365.015 nm	1.67665 @Wavelength 365.015 nm	ni (Hg i line)
Abbe Number	44.59	44.59	ν e
	44.87	44.87	ν d
Optical Dispersion	0.004243	0.004243	nd-nC; Partial Dispersion
	0.004725	0.004725	nC-nA'; Partial Dispersion
	0.006929	0.006929	nh-ng; Partial Dispersion
	0.006958	0.006958	ne-nC'; Partial Dispersion
	0.007456	0.007456	nF'-ne; Partial Dispersion
	0.007627	0.007627	ne-nC; Partial Dispersion
	0.008097	0.008097	ng-nF; Partial Dispersion
	0.010836	0.010836	nC-nt; Partial Dispersion
	0.011505	0.011505	nC'-nt; Partial Dispersion
	0.014247	0.014247	nF-nC
	0.014414	0.014414	nF'-nC'
	0.018101	0.018101	ng-nd; Partial Dispersion
	0.019244	0.019244	ni-ng; Partial Dispersion
	0.026505	0.026505	ni-nF'; Partial Dispersion
Transmission, Visible	87 % @Wavelength 380 nm	87 % @Wavelength 380 nm
	92.8 % @Wavelength 390 nm	92.8 % @Wavelength 390 nm
	95.5 % @Wavelength 400 nm	95.5 % @Wavelength 400 nm
	97.7 % @Wavelength 420 nm	97.7 % @Wavelength 420 nm
	98.3 % @Wavelength 440 nm	98.3 % @Wavelength 440 nm
	98.7 % @Wavelength 460 nm	98.7 % @Wavelength 460 nm
	99 % @Wavelength 480 nm	99 % @Wavelength 480 nm
	99.3 % @Wavelength 500 nm	99.3 % @Wavelength 500 nm
	99.6 % @Wavelength 600 nm	99.6 % @Wavelength 600 nm
	99.6 % @Wavelength 650 nm	99.6 % @Wavelength 650 nm
	99.7 % @Wavelength 550 nm	99.7 % @Wavelength 550 nm
	99.7 % @Wavelength 700 nm	99.7 % @Wavelength 700 nm
IR Transmittance	86 % @Wavelength 2400 nm	86 % @Wavelength 2400 nm
	93.2 % @Wavelength 2200 nm	93.2 % @Wavelength 2200 nm
	98.7 % @Wavelength 1800 nm	98.7 % @Wavelength 1800 nm
	99.2 % @Wavelength 1400 nm	99.2 % @Wavelength 1400 nm
	99.5 % @Wavelength 1600 nm	99.5 % @Wavelength 1600 nm
	99.8 % @Wavelength 800 nm	99.8 % @Wavelength 800 nm
	99.8 % @Wavelength 900 nm	99.8 % @Wavelength 900 nm
	99.8 % @Wavelength 1000 nm	99.8 % @Wavelength 1000 nm
	99.8 % @Wavelength 1200 nm	99.8 % @Wavelength 1200 nm
UV Transmittance	13 % @Wavelength 350 nm	13 % @Wavelength 350 nm
	49 % @Wavelength 360 nm	49 % @Wavelength 360 nm
	75 % @Wavelength 370 nm	75 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	1
CCI	0.00 B
	0.93 G
	0.93 R
coloring, λ 5	345
coloring, λ 80	385
Coloring, Internal Transmission λ 0.05	348
Coloring, Internal Transmission λ 0.80	374
Knoop Hardness Class	6
Melt Frequency	4
Ohara Code d	639449
Ohara Code e	643446
Ohara Status	Standard
Phosphate Resistance, PR	1
Photoelastic Constant (ß)	2.3
Relative Price	5.5		S-BSL7 = 1
Water Resistance, RW(P)	2
Weathering Resistance (Surface Method) W(S)max	2
Yield Point, At (°C)	645		per thermal expansion curve

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CZOHARA853 / 192120

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