Ohara S-NBH57 Optical Glass

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

(Viewing data as-entered. Click here to return)

Ohara S-NBH57 Optical Glass
Categories:	Ceramic; Glass; Optical
Material Notes:	ECO optical glass that does not contain any lead or arsenic. Information provided by Ohara Corporation.
Vendors:	No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
Printer friendly version Download as PDF Download to Excel (requires Excel and Windows) Export data to your CAD/FEA program Add to Folder:

Physical Properties	Original Value	Comments

Specific Gravity	4.00 g/cc

Chemical Properties	Original Value	Comments
Acid Class, SR	3.0

Mechanical Properties	Original Value	Comments
Hardness, Knoop	560 @Load 0.0999 kg
Modulus of Elasticity	111.7 GPa
Modulus of Rigidity	43.8 GPa
Poissons Ratio	0.275
Abrasion	140	Aa

Thermal Properties	Original Value	Comments
CTE, linear	7.70 µm/m-°C @Temperature -30.0 - 70.0 °C
	9.20 µm/m-°C @Temperature 100 - 300 °C
Thermal Conductivity	0.988 W/m-K @Temperature 35.0 °C
Transformation Temperature, Tg	625 °C	per thermal expansion curve

Optical Properties	Original Value	Comments
Refractive Index	1.79733 @Wavelength 2325.42 nm
	1.80374 @Wavelength 1970.09 nm
	1.81127 @Wavelength 1529.58 nm
	1.81935 @Wavelength 1128.64 nm
	1.82252 @Wavelength 1013.98 nm	nt (Hg t line)
	1.82864 @Wavelength 852.11 nm	ns (Cs s line)
	1.83319 @Wavelength 768.19 nm	nA' (K A' line)
	1.83754 @Wavelength 706.52 nm	nr (He r line)
	1.84204 @Wavelength 656.27 nm	nC (H C line)
	1.84332 @Wavelength 643.85 nm	nC' (Cd C' line)
	1.84453 @Wavelength 632.8 nm	nHe-Ne
	1.85000 @Wavelength 589.29 nm	nD (Na D line)
	1.85025 @Wavelength 587.56 nm	nd (He D line)
	1.85694 @Wavelength 546.07 nm	ne (Hg e line)
	1.87034 @Wavelength 486.13 nm	nf (H F line)
	1.87206 @Wavelength 479.99 nm	nF' (Cd F' line)
	1.88495 @Wavelength 441.57 nm	nHe-Cd
	1.88726 @Wavelength 435.835 nm	ng (Hg g line)
	1.90220 @Wavelength 404.656 nm	nh (Hg h line)
Abbe Number	29.82	ν e
	30.05	ν d
Optical Dispersion	0.008213	nd-nC; Partial Dispersion
	0.008849	nC-nA'; Partial Dispersion
	0.01362	ne-nC'; Partial Dispersion
	0.014901	ne-nC; Partial Dispersion
	0.014947	nh-ng; Partial Dispersion
	0.015118	nF'-ne; Partial Dispersion
	0.016919	ng-nF; Partial Dispersion
	0.01952	nC-nt; Partial Dispersion
	0.020801	nC'-nt; Partial Dispersion
	0.028299	nF-nC
	0.028738	nF'-nC'
	0.037005	ng-nd; Partial Dispersion
Transmission, Visible	60 % @Wavelength 380 nm
	72 % @Wavelength 390 nm
	81 % @Wavelength 400 nm
	89 % @Wavelength 420 nm
	93.6 % @Wavelength 440 nm
	95.5 % @Wavelength 460 nm
	96.8 % @Wavelength 480 nm
	97.8 % @Wavelength 500 nm
	99.3 % @Wavelength 550 nm
	99.4 % @Wavelength 600 nm
	99.4 % @Wavelength 650 nm
	99.6 % @Wavelength 700 nm
IR Transmittance	92.1 % @Wavelength 2400 nm
	96.8 % @Wavelength 2200 nm
	99.2 % @Wavelength 1800 nm
	99.7 % @Wavelength 1600 nm
	99.8 % @Wavelength 800 nm
	99.8 % @Wavelength 1400 nm
	99.9 % @Wavelength 900 nm
	99.9 % @Wavelength 1000 nm
	99.9 % @Wavelength 1200 nm
UV Transmittance	17 % @Wavelength 360 nm
	42 % @Wavelength 370 nm

Descriptive Properties
Acid Resistance, Powder Method, RAP)	1
CCI	0.00 B
	3.97 G
	3.97 R
coloring, λ 5	355
coloring, λ 70	410
Coloring, Internal Transmission λ 0.05	355
Coloring, Internal Transmission λ 0.80	399
Knoop Hardness Class	6
Melt Frequency	4
Ohara Code d	850300
Ohara Code e	857298
Ohara Status	Standard
Phosphate Resistance, PR	1
Photoelastic Constant (ß)	1.95
Relative Price	6	S-BSL7 = 1
Water Resistance, RW(P)	1
Weathering Resistance (Surface Method) W(S)max	1
Yield Point, At (°C)	679	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.

CZOHARA925 / 192190

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message