透射波长范围:

0.13 to 10 μm (Note: IR grade will have restricted performance outside   IR range)

0.12 to 7 μm

0.6 to 21.0 μm

折射率:

1.39908 at 5 μm

No 1.413 at 0.22 μm

2.4028 at 10.6 μm

反射损耗 :

5.4% at 5 μm

5.7% at 0.22 μm (2 surfaces)

29.1% at 10.6 μm (2 surfaces)

吸收系数 :

7.8 x   10-4 cm-1 @ 2.7 μm

40 x 10-3 cm-1 at 2.7 μm

0.0005 cm-1 at 10.6 μm

Reststrahlen Peak :

35 μm

20 μm

45.7 μm

dn/dT :

-10.6 x 10-6/°C

2.3 (para) 1.7 (perp) at 0.4 μm

+61 x 10-6/°C at 10.6 μm at 298K

dn/dμ = 0 :

1.7 μm

1.4 μm

5.5 μm

密度：

3.18 g/cc

3.18g/cc

5.27 g/cc

熔点：

1360°C

1255°C

1525°C (see notes below)

热导率：

9.71 W   m-1 K-1

21 (para) 33.6 (perp) W m-1 K-1 at 300K

18 W m-1 K-1 at 298K

热膨胀：

18.85 x 10-6/°C

13.7 (para) 8.9 (perp) x 10-6 /K

7.1 x 10-6 /°C at 273K

硬度：

Knoop 158.3   (100) with 500g indenter

Knoop 415

Knoop 120 with 50g indenter

比热容：

854 J   Kg-1 K-1

1003 J Kg m-1 K-1

339 J Kg-1 K-1

介电常数 :

6.76 at 1MHz

4.87 (para) 5.45 (perp) at 1MHz

n/a

Youngs Modulus (E) :

75.8 GPa (7)

138 GPa

67.2 GPa

剪切模量 (G) :

33.77 GPa (7)

54.66GPa

n/a

体积弹性模量 (K) :

82.71 GPa (7)

101.32 GPa

40 GPa

弹性系数 :

C11 = 164 C12 =   53 C44 = 33.7

C11=140 C12=89 C44=57 C13=63 C66=96

Not Available

表观弹性极限 :

36.54 MPa

49.6 MPa (7200 psi)

55.1 MPa (8000 psi)

泊松比 :

0.26

0.276 (2)

0.28

溶解度 :

0.0017g/100g   water at 20°C

0.0002g/100g water

0.001g/100g water

分子量 :

78.08

62.32

144.33

类别/结构 :

Cubic Fm3m   (#225) Fluorite Structure. Cleaves on (111)

Tetragonal P42/mnm (#136) Rutile Structure. Can cleave on c-axis   but

not easily.

FCC Cubic, F43m (#216), Zinc Blende structure. (Polycrystalline)

0.149

1.5800

0.161

1.5490

0.195

1.5000

0.200

1.4950

0.222

1.4800

0.248

1.4680

0.266

1.4621

0.280

1.4584

0.300

1.454

0.337

1.4481

0.400

1.4419

0.486

1.4370

0.588

1.4339

0.656

1.4325

0.687

1.4320

0.728

1.4314

0.884

1.4298

1.014

1.4288

1.100

1.4283

1.250

1.4275

1.650

1.4256

1.900

1.4244

2.058

1.4236

2.450

1.4214

2.700

1.4199

2.800

1.4192

3.050

1.4175

3.400

1.4149

4.000

1.4096

4.400

1.4057

4.800

1.4014

5.000

1.3991

5.304

1.3952

5.893

1.3871

6.483

1.3782

7.072

1.3681

7.661

1.357

8.251

1.3444

8.840

1.3308

9.429

1.3161