Ohara S-TIM35 Optical Glass

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Ohara S-TIM35 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	2.96 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	1.0

Mechanical Properties	Original Value	Comments
Hardness, Knoop	500 @Load 0.0999 kg
Modulus of Elasticity	87.5 GPa
Modulus of Rigidity	35.3 GPa
Poissons Ratio	0.238
Abrasion	136	Aa

Thermal Properties	Original Value	Comments
CTE, linear	7.50 µm/m-°C @Temperature -30.0 - 70.0 °C
	8.90 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	1.049 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	622 °C	per thermal expansion curve
Softening Point	716 °C	10^7.65 poise; JIS-R3104 and ASTM-C338
Annealing Point	603 °C	10¹³ poise; ASTM-C336
Strain Point	579 °C	10^14.5 poise; JIS-R3103 and ASTM-C336

Optical Properties	Original Value	Comments
Refractive Index	1.65283 @Wavelength 2325.42 nm
	1.65905 @Wavelength 1970.09 nm
	1.66615 @Wavelength 1529.58 nm
	1.67335 @Wavelength 1128.64 nm
	1.67606 @Wavelength 1013.98 nm	nt (Hg t line)
	1.68120 @Wavelength 852.11 nm	ns (Cs s line)
	1.68496 @Wavelength 768.19 nm	nA' (K A' line)
	1.68854 @Wavelength 706.52 nm	nr (He r line)
	1.69222 @Wavelength 656.27 nm	nC (H C line)
	1.69327 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.69426 @Wavelength 632.8 nm	nHe-Ne
	1.69875 @Wavelength 589.29 nm	nD (Na D line)
	1.69895 @Wavelength 587.56 nm	nd (He D line)
	1.70442 @Wavelength 546.07 nm	ne (Hg e line)
	1.71542 @Wavelength 486.13 nm	nf (H F line)
	1.71684 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.72750 @Wavelength 441.57 nm	nHe-Cd
	1.72941 @Wavelength 435.835 nm	ng (Hg g line)
	1.74189 @Wavelength 404.656 nm	nh (Hg h line)
Abbe Number	29.89	ν e
	30.13	ν d
Optical Dispersion	0.006722	nd-nC; Partial Dispersion
	0.007266	nC-nA'; Partial Dispersion
	0.01115	ne-nC'; Partial Dispersion
	0.012199	ne-nC; Partial Dispersion
	0.012417	nF'-ne; Partial Dispersion
	0.012478	nh-ng; Partial Dispersion
	0.013988	ng-nF; Partial Dispersion
	0.016161	nC-nt; Partial Dispersion
	0.01721	nC'-nt; Partial Dispersion
	0.023199	nF-nC
	0.023567	nF'-nC'
	0.030465	ng-nd; Partial Dispersion
Transmission, Visible	48 % @Wavelength 380 nm
	72 % @Wavelength 390 nm
	84 % @Wavelength 400 nm
	93.9 % @Wavelength 420 nm
	96.4 % @Wavelength 440 nm
	97.4 % @Wavelength 460 nm
	98.1 % @Wavelength 480 nm
	98.6 % @Wavelength 500 nm
	99.3 % @Wavelength 650 nm
	99.4 % @Wavelength 550 nm
	99.4 % @Wavelength 600 nm
	99.5 % @Wavelength 700 nm
IR Transmittance	93.1 % @Wavelength 2400 nm
	94.2 % @Wavelength 2200 nm
	98.8 % @Wavelength 1800 nm
	99.5 % @Wavelength 1400 nm
	99.5 % @Wavelength 1600 nm
	99.8 % @Wavelength 800 nm
	99.9 % @Wavelength 900 nm
	99.9 % @Wavelength 1000 nm
	99.9 % @Wavelength 1200 nm
UV Transmittance	14 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	1
CCI	0.00 B
	2.94 G
	2.94 R
coloring, λ 5	360
coloring, λ 80	400
Coloring, Internal Transmission λ 0.05	367
Coloring, Internal Transmission λ 0.80	397
Knoop Hardness Class	5
Melt Frequency	2
Ohara Code d	699301
Ohara Code e	704299
Ohara Status	Preferred
Phosphate Resistance, PR	1
Photoelastic Constant (ß)	3.04
Relative Price	4	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)	648	per thermal expansion curve

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CZOHARA965 / 192230

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