CerCo -- Kiln Furniture Selection Criteria
Material Type  

Fused Silica

  

Clay Bonded Fused Silica

  

Cordierite Thermal Shock Resistant

  

Cordierite Sag Resistant

  

Cordierite High Strength
Compositional Designations  

CerCoSil

  

C703,
C708

  

C080, C154, C455, C451, L138, L140, L183, L127, L155, C851, C864

  

C080, C154, C451, L140, L155, C851

  

C080, C851, C154, L116, L150
 
Parameter Units          
Bulk Density g/cc  

1.89

  

1.78-1.83

  

1.9-2.15

  

1.97-2.15

  

1.99-2.15
  lbs./ft.3  

118

  

111-114

  

119-134

  

123-134

  

124-134
Water Absorption %  

9.2

  

13.5-16.5

  

8.4-13.7

  

8.40-13.00

  

8.40-13.00
Open Porosity %  

15.6

  

25-31

  

18.5-26.1

  

18.50-24.25

  

18.50-22.10
Specific Gravity g/cc  

2.24

  

2.36-2.61

  

2.47-2.80

  

2.47-2.80

  

2.55-2.80
  lbs./ft.3  

140

  

147-163

  

154-175

  

154-175

  

159-175
Flexural Strength MPa  

13.8

  

7.90-8.30

  

5.17-15.86

  

9.31-16.03

  

15.51-25.51
  psi  

2000

  

1150-1200

  

750-2300

  

1350-2325

  

22.50-3700
Thermal Expansion ppm/C  

1.3

  

1.55-2.5

  

1.68-3.25

  

2.05-3.25

  

3.02-3.85
  ppm/F  

0.7

  

0.86-1.39

  

0.93-1.81

  

1.14-1.81

  

1.68-2.14
Max. Use Temp. C  

1650

  

1450

  

1300

  

1300

  

1300
  F  

3000

  

2650

  

2375

  

2375

  

2375

 

Material Type  

Alumina 80

  

Alumina 90

  

Alumina Zirconia Toughened

  

Zirconia

  

Silicon Carbide Oxide Bonded

  

Silicon Carbide Recrystallized
Compositional Designations  

A203

  

A101, AL142

  

A205, AL145

  

IQ-396-Z

  

K1328, K1346

  

RX21
 
Parameter Units          
Bulk Density g/cc  

2.9

  

2.88-2.98

  

2.72-2.96

  

5

  

2.45-2.66

  

2.65
  lbs./ft.3  

181

  

180-186

  

170-185

  

312

  

153-166

  

165
Water Absorption %  

5.8

  

3.75-5.00

  

7.80-8.25

  

2.2

  

1.40-7.00

  

3.1
Open Porosity %  

16.7

  

11.20-14.00

  

21.30-24.00

  

11

  

16.00-22.00

  

18
Specific Gravity g/cc  

3.5

  

3.36-3.38

  

3.46-3.91

  

5.7

  

2.70-3.05

  

3.22
  lbs./ft.3  

218

  

210-211

  

216-244

  

356

  

168-190

  

201
Flexural Strength MPa  

15.45

  

12.90-20.41

  

12.41-18.96

  

55.2

  

18.96-24.13

  

110.3
  psi  

2240

  

1870-2960

  

1800-2750

  

8000

  

2750-3500

  

16000
Thermal Expansion ppm/C  

6.23

  

5.96-6.10

  

6.00-7.00

  

6.05

  

4.66-4.88

  

4.5
  ppm/F  

3.46

  

3.31-3.39

  

3.33-3.89

  

3.36

  

2.59-2.71

  

2.5
Max. Use Temp. C  

1550

  

1650

  

1650

  

1650

  

1200

  

1650
  F  

2825

  

3000

  

3000

  

3000

  

2200

  

3000

 

  

 

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Specialty Ceramics Division
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(740) 982-2050
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