schott-datasheet-all-english

Table of Content

Glass type Page

FK

FK5HTi5 N-FK51)6 N-FK51A1)7 N-FK588

PK

N-PK511)9 N-PK52A1)10

PSK

N-PSK311 N-PSK53A12

BK

SCHOTT N-BK 7?13 N-BK7HT14 N-BK7HTi15 N-BK1016 P-BK71)17

K

K718 K1019 N-K520 N-ZK721

BAK

N-BAK122 N-BAK223 N-BAK424 N-BAK4HT25

BAF

N-BAF426 N-BAF1027 N-BAF5128 N-BAF5229

BALF

N-BALF430 N-BALF531Glass type Page

SK

N-SK232

N-SK2HT33

N-SK434

N-SK535

N-SK1136

N-SK1437

N-SK1638

P-SK571)39

P-SK57Q11)40

P-SK58A1)41

P-SK601)42

KF

N-KF943

SSK

N-SSK244

N-SSK545

N-SSK846

LAK

N-LAK747

N-LAK848

N-LAK949

N-LAK1050

N-LAK1251

N-LAK1452

N-LAK2153

N-LAK2254

N-LAK33A55

N-LAK33B56

N-LAK3457

P-LAK351)58

LLF

LLF159

LLF1HTi60

LF

LF561

LF5HTi62

Glass type Page

F

F263

F2HT64

F565

N-F266

BASF

N-BASF267

N-BASF6468

LAF

LAFN769

N-LAF270

N-LAF771

N-LAF2172

N-LAF331)73

N-LAF3474

N-LAF3575

P-LAF371)76

LASF

LASF3577

N-LASF978

N-LASF9HT79

N-LASF31A80

N-LASF4081

N-LASF4182

N-LASF4383

N-LASF4484

N-LASF4585

N-LASF45HT86

N-LASF46A87

N-LASF46B1)88

P-LASF471)89

P-LASF501)90

P-LASF511)91

Glass type Page

SF

N-SF192

N-SF293

N-SF494

N-SF595

N-SF696

N-SF6HT97

N-SF6HTultra98

N-SF899

N-SF10100

N-SF11101

N-SF14102

N-SF15103

N-SF57104

N-SF57HT105

N-SF57HTultra106

N-SF66107

P-SF81)108

P-SF671)109

P-SF681)110

P-SF691)111

SF1112

SF2113

SF4114

SF5115

SF6116

SF6HT117

SF10118

SF11119

SF56A120

SF571)121

SF57HTultra1)122

KZFS

N-KZFS111)123

N-KZFS21)124

N-KZFS41)125

N-KZFS4HT1)126

N-KZFS51)127

N-KZFS81)128

1) Glass suitable for Precision Molding25/06/2014

Explanations

Refractive indices

The refractive indices n are listed for a maximum of 23 wavelengths in the range between 248.2 nm and 2325.4 nm.Constants of the dispersion formula From the Sellmeier dispersion formula

n 2

(λ) - 1 = + +

B 1 λ2λ2 -

C 1B 2 λ2λ2 - C 2B 3 λ2

λ2 - C 3

the refractive indices for any wavelength within the range from the near

UV to 2.3 μm can be calculated with the help of the constants B 1, B 2, B 3,and C 1,C 2,C 3.

Constants of the formula dn/dT

The temperature dependence of the refractive index can be calculated using the following formula:= (D 0 + 2 D 1 ΔT + 3 D 2 ΔT 2 +

)

dn abs (λ, T)dT n 2 (λ, T 0 ) - 12 n(λ, T 0 )E 0 + 2 E 1 ΔT

λ2 - λ 2 TK

The constants are valid for a temperature range from -100°C to +140°C and a wavelength range from 0.365 μm to 1.014 μm. The temperature coefficients in the data sheets are guideline values.

Temperature coefficient of refraction

Δn rel / ΔT referring to air at normal pressure 1013.3 mbar Δn abs / ΔT referring to vacuum

Internal transmittance τ i

The internal transmittance in the wavelength range between 250 nm and 2500 nm is listed for thickness of 10 and 25 mm. The internal transmittance and color code listed in the data sheet represent median values from several melts of one glass type. For HT and HTultra grade, the internal transmittance in the visible spectrum includes guaranteed minimum values.Color code

The color code lists the wavelength λ80 and λ5 at which the transmittance is 0.80 and 0.05 at 10 mm thickness. The values are rounded off to 10 nm and denoted by eliminating the first digit. For high index glass types with

nd>1.83, the data of the color codes (marked by *) refers to the transmittance values 0.70 and 0.05 (λ70 and λ5).

Relative partial dispersion

The relative partial dispersions P xy and P'xy for the wavelengths x and y are derived from the equations.

P xy = und P'xy =

n x - n y n F - n C n x - n y

n F' - n C'

Deviation of the relative partial dispersion from the "normal line" ΔP The term ΔP xy quantitatively describes a deviation relation of the dispersion from the "normal glasses".

Other characteristics

α

-30/+70=The coefficient of thermal expansion in the temperature range between – 30°C und + 70°C in 10-6/K

α

20/300=The coefficient of linear thermal expansion in the temperature range between + 20°C und + 300°C in 10-6/K

Tg=Transformation temperature in °C

T

1013.0

=Temperature of the glass in °C at a viscosity of 1013 dPa·s

T

107.6

=Temperature of the glass in °C at a viscosity of 107.6 dPa·s

c

p

=average specific heat capacity in J/(g·K)

λ=Thermal conductivity in W/(m·K)

AT*=Yield point/sag temperature in °C

ρ=Density in g/cm3

E=Elasticity modulus in 103 N/mm2

μ=Poisson's ratio

K=Stress optical coefficient in 10-6 mm2/N

HK=Knoop hardness

HG=Grindability class (ISO 12844)

Abrasion Aa*=Grindability according to JOGIS**

CR=Climatic resistance

Resistance to moisture in the air expressed in CR classes

1 (high) to 4 (low).

FR=Stain resistance

Resistance to stain formation expressed in FR classes 0 (high)

to 5 (low).

SR=Acid resistance

Resistance to acid solutions expressed in SR classes 1 (high)

to 4 (low) and 51 to 53 (very low).

AR=Alkali resistance

Resistance to alkaline solutions expressed in AR classes 1

(high) to 4 (low).

PR=Phosphate resistance

Resistance to alkaline phosphate containing solutions

expressed in PR classes 1 (high) to 4 (low).

SR-J*=Acid resistance class according to JOGIS**

WR-J*=Water resistance class according to JOGIS**

* only precision molding glasses

** JOGIS = Japanese Optical Glass Industrial Standards

Data Sheet

FK5HTi 487705.245

n n d e = 1.48748= 1.48913

ννd e = 70.47= 70.29n n F F'--n n C C'= 0.006918= 0.006959

As of 05/17/2013, Subject to change

5 | Overview

Data Sheet

N-FK5

487704.245

n n d e = 1.48749= 1.48914

ννd e = 70.41= 70.23n n F F'--n n C C'= 0.006924= 0.006965

As of 02/01/2014, Subject to change 6 | Overview

Data Sheet

N-FK51A 487845.368

n n d e = 1.48656= 1.48794

ννd e = 84.47= 84.07n n F F'--n n C C'= 0.005760= 0.005804

As of 02/01/2014, Subject to change 7 | Overview

Data Sheet

N-FK58456909.365

n n d e = 1.45600= 1.45720

ννd e = 90.90= 90.47n n F F'--n n C C'= 0.005017= 0.005053

As of 06/18/2014, Subject to change

8 | Overview

Data Sheet

N-PK51529770.386

n n d e = 1.52855= 1.53019

ννd e = 76.98= 76.58n n F F'--n n C C'= 0.006867= 0.006923

As of 02/01/2014, Subject to change 9 | Overview

Data Sheet

N-PK52A 497816.370

n n d e = 1.49700= 1.49845

ννd e = 81.61= 81.21n n F F'--n n C C'= 0.006090= 0.006138

As of 02/01/2014, Subject to change 10 | Overview

Data Sheet

N-PSK3552635.291

n n d e = 1.55232= 1.55440

ννd e = 63.46= 63.23n n F F'--n n C C'= 0.008704= 0.008767

As of 02/01/2014, Subject to change 11 | Overview

Data Sheet

N-PSK53A 618634.357

n n d e = 1.61800= 1.62033

ννd e = 63.39= 63.10n n F F'--n n C C'= 0.009749= 0.009831

As of 02/01/2014, Subject to change

12 | Overview

Data Sheet

SCHOTT N-BK 7?517642.251

n n d e = 1.51680= 1.51872

ννd e = 64.17= 63.96n n F F'--n n C C'= 0.008054= 0.008110

As of 02/01/2014, Subject to change

13 | Overview

Data Sheet

N-BK7HT 517642.251

n n d e = 1.51680= 1.51872

ννd e = 64.17= 63.96n n F F'--n n C C'= 0.008054= 0.008110

As of 02/01/2014, Subject to change

14 | Overview

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