Specific Gravity:

3.90

Crystal Size:

Range 2-50 Micron, Avg 15-30

Surface Finish, As Fired:

26

Surface Finish, Ground:

17

Water Absorption:

None

Permeability:

Gas Tight

Flexural Strength, Typical 25 oC:

331 MPa (48 kpsi)

Flexural Strength, Typical 1000 oC:

193 MPa (28 kpsi)

Compressive Strength:

2071 MPa (>300 kpsi)

Modulus of Elasticity Typical 25 oC:

345 GPa (50 x 106 psi)

Color:

Ivory

Specific Heat @ 100 oC:

880 J/Kg-oK, 0.21 Cal/g/oC

Maximum Temperature

(for no load conditions):

1750 oC, 3180 oF

Thermal Conductivity, 25 oC:

29.4 W/mK

Thermal Conductivity, 100 oC:

23.0 W/mK

Thermal Coefficient of Expansion:

          25 - 200 oC:

6.7 x 10-6/oC

          25 - 500 oC:

7.3 x 10-6/oC

          25 - 800 oC:

7.8 x 10-6/oC

          25 - 1000 oC:

8.0 x 10-6/oC

Dielectric Strength:

          6.35 mm:

8.7 kv/mm

          3.18 mm:

11.6 kv/mm

          Spec. 1.27 mm:

16.5 kv/mm

Tubing

Rod

Outside  Diameter

Inside Diameter

Diameter

.250”

.156”

.020”

.250”

.188”

.029”

.375”

.250”

.040”

.500”

.250”

.048”

.500”

.375”

.060”

.625”

.500”

.080”

.750”

.563”

.125”

.750”

.500”

.250”

.875”

.625”

.375”

1.000”

.750”

.500”

1.125”

.875”

.625”

1.250”

.875”

.625”

1.375”

1.125”

1.00”

1.500”

1.250”

-

1.625”

1.375”

-

1.750”

1.500”

-

1.875”

1.625”

-

2.000”

1.750”

-

2.125”

1.875”

-

2.250”

2.000”

-

2.375”

2.125”

-

2.500”

2.250”

-

2.750”

2.375”

-

2.750”

2.500”

-

3.000”

2.750”

-

3.250”

2.875”

-

3.500”

3.125”

-

3.500”

3.250”

-

3.750”

3.375”

-

4.000”

3.625”

-

4.250”

3.875”

-

4.500”

4.125”

-

4.750”

4.375”

-

5.000”

4.625”

-

5.250”

4.875”

-

5.500”

5.125”

-

Compressive Strength 25 oC (ACMA-1) lg/in2:

15 x 10.3

Modulus of Elasticity 25 oC (sonic):

11.4 x 10.6

Modulus of Rupture lb/in2

     @ 25 oC:

6350

     @ 1000 oC:

6760