Material Properties

Density

gm/cc

ASTM-C20

3,95

Crystal Size

Average

MICRONS

THIN-SECTION

1

Water Absorption

%

ASTM-373

0

Gas Permeability

-

-

0

Color

-

-

IVORY

Flexural Strength (MOR)

20°C

80°C

MPa (psi x 10³)

MPa (psi x 10³)

MPa (psi x 10³)

ASTN-F417

ASTM-1161 "B"

ASTM C-1161-02C

545(79)

475(69)

Elastic Modulus

20°C

GPa (psi x 10⁶)

ASTM-C848

393(57)

Poisson's Ratio

20°C

-

ASTM-C773

0,22

Compressive Strength

20°C

MPa (psi x 10³)

2500 (363)

Hardness

Gpa (kg/mm²)

R45N

Rockwell A (HV₃₀)

Gpa (kg/mm²)

KNOOP 1000 gm

ROCKWELL 45 N

VICKERS 0.5kg

16.5 (1680)

-

Tensile Strength

25°C

MPa (psi x 10³)

ACMA TEST #4

380 (55)

Transverse Rupture Strength

MPa (psi x 10³)

Fracture Toughness

K(lc)

Mpa m^1/2

NOTCHED BEAM

4-5

Thermal Conductivity

20°C

W/m °K

ASTM-C408

30

Coefficient of Thermal

Expansion

25-400°C

25-800°C

25-1000°C

1 x 10^-6/°C

1 x 10^-6/°C

1 x 10^-6/°C

ASTM-C372

8,2

Specific Heat

100°C

J/kg*K

ASTM-E1269

880

Thermal Shock Resistance

ΔTc

°C

NOTE 1

200

Maximum Use Temperature

°C

NO-LOAD COND.

1700

Dielectric Strength

6.35mm

ac-kV/mm (ac V/mil)

ASTM-D116

18.1 (460)

Dielectic Constant

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

-

Dielectic Loss (tan delta)

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

-

Volume Resistivity

25°C

500°C

1000°C

ohm-cm

ohm-cm

ohm-cm

ASTM-D1829

ASTM-D1829

ASTM-D1829

> 10¹⁴

2 x 10¹⁰

2 x 10⁶

Elements

Oxides

Impurities

Avg. ppm

Fraction

Fraction

Avg. ppm

Na (Na₂O)

668

1,50097

2,72727

896

Mg (MgO)

62

0,08103

0,22271

103

Si (SiO₂)

106

0,77420

3,54688

224

Fe (Fe₂O₃)

92

1,11338

2,27586

135

Ca (CaO)

68

0,70326

1,37681

96

Ga (Ga₂O₃)

7

0,61492

1,11111

9

Li (li₂O)

4

0,38847

1,80000

9

Ti (Ti₂O₃)

3

0,73937

1,66667

5

Mn (Mn₂O₃)

3

0,96873

2,00000

4

Zr (Zr₂O₃)

5

0,62680

1,00000

6

Ba (BaO)

4

0,66849

0,83333

5

K (K₂O)

2

0,52074

0,75000

3

Cr (Cr₂O₃)

1

0,46812

1,00000

2

Cl

2

1,11111

1,11111

2

Total impurites (ppm)

Total impurites (%)

Alumina Content (%)

1499

0.1499

99.8501

Density

gm/cc

ASTM-C20

3,72

Crystal Size

Average

MICRONS

THIN-SECTION

6

Water Absorption

%

ASTM-373

0

Gas Permeability

-

-

0

Color

-

-

WHITE

Flexural Strength (MOR)

20°C

80°C

MPa (psi x 10³)

MPa (psi x 10³)

MPa (psi x 10³)

ASTN-F417

ASTM-1161 "B"

ASTM C-1161-02C

358 (52)

Elastic Modulus

20°C

GPa (psi x 10⁶)

ASTM-C848

303(44)

Poisson's Ratio

20°C

-

ASTM-C848

0,21

Compressive Strength

20°C

MPa (psi x 10³)

ASTM-C773

2068 (300)

Hardness

Gpa (kg/mm²)

R45N

Rockwell A (HV₃₀)

Gpa (kg/mm²)

KNOOP 1000 gm

ROCKWELL 45 N

VICKERS 0.5kg

11.5 (1175)

78

Tensile Strength

25°C

MPa (psi x 10³)

ACMA TEST #4

221 (32)

Transverse Rupture Strength

MPa (psi x 10³)

Fracture Toughness

K(lc)

Mpa m^1/2

NOTCHED BEAM

4-5

Thermal Conductivity

20°C

W/m °K

ASTM-C408

24.7

Coefficient of Thermal

Expansion

25-400°C

25-800°C

25-1000°C

1 x 10^-6/°C

1 x 10^-6/°C

1 x 10^-6/°C

ASTM-C372

8,2

Specific Heat

100°C

J/kg*K

ASTM-E1269

880

Thermal Shock Resistance

ΔTc

°C

NOTE 1

250

Maximum Use Temperature

°C

NO-LOAD COND.

1700

Dielectric Strength

6.35mm

ac-kV/mm (ac V/mil)

ASTM-D116

8.3 (210)

Dielectic Constant

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

9

Dielectic Loss (tan delta)

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

0,0002

Volume Resistivity

25°C

500°C

1000°C

ohm-cm

ohm-cm

ohm-cm

ASTM-D1829

ASTM-D1829

ASTM-D1829

> 10¹⁴

4 x 10⁹

1 x 10⁶

Density

gm/cc

ASTM-C20

3,90

Crystal Size

Average

MICRONS

THIN-SECTION

6

Water Absorption

%

ASTM-373

0

Gas Permeability

-

-

0

Color

-

-

IVORY

Flexural Strength (MOR)

20°C

80°C

MPa (psi x 10³)

MPa (psi x 10³)

MPa (psi x 10³)

ASTN-F417

ASTM-1161 "B"

ASTM C-1161-02C

379 (55)

Elastic Modulus

20°C

GPa (psi x 10⁶)

ASTM-C848

370(54)

Poisson's Ratio

20°C

-

ASTM-C848

0,22

Compressive Strength

20°C

MPa (psi x 10³)

ASTM-C773

2600 (377)

Hardness

Gpa (kg/mm²)

R45N

Rockwell A (HV₃₀)

Gpa (kg/mm²)

KNOOP 1000 gm

ROCKWELL 45 N

VICKERS 0.5kg

14.1 (1440)

83

Tensile Strength

25°C

MPa (psi x 10³)

ACMA TEST #4

262 (38)

Transverse Rupture Strength

MPa (psi x 10³)

Fracture Toughness

K(lc)

Mpa m^1/2

NOTCHED BEAM

4-5

Thermal Conductivity

20°C

W/m °K

ASTM-C408

30,0

Coefficient of Thermal

Expansion

25-400°C

25-800°C

25-1000°C

1 x 10^-6/°C

1 x 10^-6/°C

1 x 10^-6/°C

ASTM-C372

8,2

Specific Heat

100°C

J/kg*K

ASTM-E1269

880

Thermal Shock Resistance

ΔTc

°C

NOTE 1

200

Maximum Use Temperature

°C

NO-LOAD COND.

1750

Dielectric Strength

6.35mm

ac-kV/mm (ac V/mil)

ASTM-D116

8.7 (220)

Dielectic Constant

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

9,7

Dielectic Loss (tan delta)

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

0,0001

Volume Resistivity

25°C

500°C

1000°C

ohm-cm

ohm-cm

ohm-cm

ASTM-D1829

ASTM-D1829

ASTM-D1829

> 10¹⁴

2 x 10¹⁰

2 x 10⁶

Density

gm/cc

ASTM-C20

6,02

Crystal Size

Average

MICRONS

THIN-SECTION

1

Water Absorption

%

ASTM-373

0

Gas Permeability

-

-

0

Color

-

-

IVORY

Flexural Strength (MOR)

20°C

80°C

MPa (psi x 10³)

MPa (psi x 10³)

MPa (psi x 10³)

ASTN-F417

ASTM-1161 "B"

ASTM C-1161-02C

1240 (180)

Elastic Modulus

20°C

GPa (psi x 10⁶)

ASTM-C848

210(30)

Poisson's Ratio

20°C

-

ASTM-C848

0,30

Compressive Strength

20°C

MPa (psi x 10³)

ASTM-C773

2500 (363)

Hardness

Gpa (kg/mm²)

R45N

Rockwell A (HV₃₀)

Gpa (kg/mm²)

KNOOP 1000 gm

ROCKWELL 45 N

VICKERS 0.5kg

12.7 (1300)

81

Tensile Strength

25°C

MPa (psi x 10³)

ACMA TEST #4

-

Transverse Rupture Strength

MPa (psi x 10³)

Fracture Toughness

K(lc)

Mpa m^1/2

NOTCHED BEAM

13

Thermal Conductivity

20°C

W/m °K

ASTM-C408

2,2

Coefficient of Thermal

Expansion

25-400°C

25-800°C

25-1000°C

1 x 10^-6/°C

1 x 10^-6/°C

1 x 10^-6/°C

ASTM-C372

10,3

Specific Heat

100°C

J/kg*K

ASTM-E1269

400

Thermal Shock Resistance

ΔTc

°C

NOTE 1

350

Maximum Use Temperature

°C

NO-LOAD COND.

1500

Dielectric Strength

6.35mm

ac-kV/mm (ac V/mil)

ASTM-D116

9.0 (228)

Dielectic Constant

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

29,0

Dielectic Loss (tan delta)

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

0,0010

Volume Resistivity

25°C

500°C

1000°C

ohm-cm

ohm-cm

ohm-cm

ASTM-D1829

ASTM-D1829

ASTM-D1829

> 10¹³

2 x 10⁴⁵

< 10³

Density

gm/cc

ASTM-C20

5,72

Crystal Size

Average

MICRONS

THIN-SECTION

35

Water Absorption

%

ASTM-373

0

Gas Permeability

-

-

0

Color

-

-

IVORY

Flexural Strength (MOR)

20°C

80°C

MPa (psi x 10³)

MPa (psi x 10³)

MPa (psi x 10³)

ASTN-F417

ASTM-1161 "B"

ASTM C-1161-02C

900 (130)

Elastic Modulus

20°C

GPa (psi x 10⁶)

ASTM-C848

200(29)

Poisson's Ratio

20°C

-

ASTM-C848

0,30

Compressive Strength

20°C

MPa (psi x 10³)

ASTM-C773

1750 (254)

Hardness

Gpa (kg/mm²)

R45N

Rockwell A (HV₃₀)

Gpa (kg/mm²)

KNOOP 1000 gm

ROCKWELL 45 N

VICKERS 0.5kg

11.8 (1200)

77

Tensile Strength

25°C

MPa (psi x 10³)

ACMA TEST #4

483 (70)

Transverse Rupture Strength

MPa (psi x 10³)

Fracture Toughness

K(lc)

Mpa m^1/2

NOTCHED BEAM

11

Thermal Conductivity

20°C

W/m °K

ASTM-C408

2,2

Coefficient of Thermal

Expansion

25-400°C

25-800°C

25-1000°C

1 x 10^-6/°C

1 x 10^-6/°C

1 x 10^-6/°C

ASTM-C372

10,2

Specific Heat

100°C

J/kg*K

ASTM-E1269

400

Thermal Shock Resistance

ΔTc

°C

NOTE 1

350

Maximum Use Temperature

°C

NO-LOAD COND.

500

Dielectric Strength

6.35mm

ac-kV/mm (ac V/mil)

ASTM-D116

9.4 (240)

Dielectic Constant

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

28,0

Dielectic Loss (tan delta)

1 MHz

5.2 GHz

25°C

ASTM-D150

NOTE 5

0,0010

Volume Resistivity

25°C

500°C

1000°C

ohm-cm

ohm-cm

ohm-cm

ASTM-D1829

ASTM-D1829

ASTM-D1829

> 10¹³

2 x 10⁵

< 10³