Ceramics Material Specifications

     

 

Alumina

Boron Nitride

Lava

 

Mycalex

 

Zirconia

Physical Properties

Units

Test

Macor®

85%

94%

96%

99.5%

99.8%

99.9%

Grade A

Grade AX05

Grade HP

Grade A

MM400

MM500

MM600

MM800

AmZirOx 86

Chemical Formula

 

-

glass ceramic

 

 

 

 

 

 

95% BN

99% BN

95% BN

Al2(Si4010)
(OH2)

 

 

 

 

95% Zirconia,
5% yttria

Density

g/cm³

ASTM C20

2.52

3.42

3.7

3.72

3.7-3.97

3.8-3.9

3.93

>1.90

>1.80

>1.90

2.30

2.5

2.7

2.8

2.74

6.05

Color

-

-

white

 

white

white

ivory/white

ivory

 

white

white

white

pink

Dark Gray

Light Gray

Cream

Off White

Ivory

Crystal Structure

-

-

random

 

 

 

hexagonal

 

 

hexagonal

hexagonal

hexagonal

random

 

 

 

 

tetragonal

Water Absorption

%

ASTM C373

0.0

0.0

0.0

0.0

0.0

 

0.0

-

-

-

2.5

Nil

Nil

Nil

Nil

0

Hardness

Moh's

-

4.5

 

9

9

9

 

 

5

2

4

6

 

 

 

 

8

Hardness

Knoop
(kg/mm1)

Knoop 100g

250

 

2000

 

2000

 

2000

15.51 - 24.19
Knoop(kg/mm2)

-

-

500

 

 

 

 

1300

Mechanical Properties

Units

Test

Macor®

85%

94%

96%

99.5%

99.8%

99.9%

Grade A

Grade AX05

Grade HP

Lava

MM 400

MM 500

MM 600

MM 800

AmZirOx 86

Compressive Strength

psi
MPa

ASTM C773

345

1930

2103

2068

2070-2620

2300

 

20780 (27060)
@25°C

125

25

172.5

45,000
310

40,000
276

32,000
221

40,000
276

2500

Tensile Strength

psi
MPa

ACMA TEST# 4

90

155

193

221

260-300

 

 

-

-

-

20.7

6000
41.4

6000
41.4

5000
34.5

6000
41.4

 

Modulus of Elasticity
(Young's Mod.)

psi x 106
GPa

ASTM C848

66.9

 

41-46 x 106 psi

44-331

394

 

55 x 106 psi

-

17 - 71

40 - 60

-

11.0
75

12.0
82.7

10.6
73.1

11.5
79.3


204

Flexural Strength

psi
MPa

ASTM F417

94

296

352

400

310-379

310

50-60

11000 (16400)
@ 25°C 900
(1380) @1500°C

2600 (3100)
@ 25°C 6200
(11000) @ 1500 °C

6430 (8730)
@ 25°C 1710
(2470) @ 1500 °C

69

13,000
89.6

12,500
86.2

11,000
75.9

13,500
93.1

1350

Poisson's Ratio

-

ASTM C818

0.29

0.22

0.21

0.25

0.27

 

0.19

-

-

-

-

 

 

 

 

0.31

Fracture Toughness

MPa x m1/2

Notched Beam

1.53

3-4

4-5

4-5

4-5

 

4-5

-

-

-

-

 

 

 

 

7

Thermal Properties

Units

Test

Macor®

85%

94%

96%

99.5%

99.8%

99.9%

Grade A

Grade AX05

Grade HP

Lava

MM 400

MM 500

MM 600

MM 800

AmZirOx 86

Max. Use Temperature
(* denotes insert atm.)

°F
°C

No Load Cond.

1000

1400

1700

1700

1750

 

1900

>1000

>1800

>1000

1150

750
400

930
500

1100
600

1600
800

4350
2400

Thermal Shock Resistance

DT (ºC)

Quenching

25-100

300

300

250

200

 

200

-

 

 

-

 

 

 

 

500

Thermal Conductivity

W/m.K

ASTM C408

1.8

16

18.0-28.0

26

35

25

341

30

70 - 130

30

1.98

.87

1.15

1.32

1.02

2.1

Coefficient of Linear
Thermal Expansion

µm/m-°C
(~25°C though +/- 1000°C)

ASTM C372

6.3-9.7

7.2

8.2

8.2

8.4

 

7.6 106

2

0

0

3.6

 

 

 

 

10.3

Specific Heat

cal/g/°C

ASTM C351

0.19

 

0.21

 

0.21

 

0.2

1.610 @ 700°C
(J/g°C)

-

-

0.20

0.12

0.12

0.11

0.209

0.32

Electrical Properties

Units

Test

Macor®

85%

94%

96%

99.5%

99.8%

99.9%

Grade A

Grade AX05

Grade HP

Lava

MM 400

MM 500

MM 600

MM800

AmZirOx 86

Dielectric Constant

1Mhz @ R.T.

ASTM D150

6.03

8.2

9.3

9.0

9.6

 

9.8

4.0

4.0

4.0

5.3

 

 

 

 

29

Dielectric Strength

V/mil
kV/mm

ASTM D116

40

9.4 (240 acV/mil)

8.3

8.3 (210 ac/Vmil)

15.0

 

(230 acVmil)

>40

>40

>40

0.1

730
28.7

530
20.9

420
16.5

480
18.9

9

Electrical Resistivity

Wcm @ R.T.

ASTM D182

>1017

 

 

 

 

 

1014

>1014

>1014

>1014

1014

 

 

 

 

>1013

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