Characteristic

*           Fairly low thermal conductivity

*           Adequate cold crushing strength

Application

*           Back-up insulation

*           Hot face lining

Classification temperature

1300^o C

Recommended interface temperature

1200^o C

Recommended hot face temperature

1000 - 1200^o C

JIS

SPECIFICATION

AVERAGE

Bulk density

g / cm³

R2614

   0.92 max

   0.85

Thermal conductivity at mean

   temp. of 350^o C

W / mK

kcal / m h^o C

R2616

   0.27 max

   0.23 max

   0.24

   0.22

Cold crushing strength

MPa

kgf / cm²

R2615

   2.4 min

  25  min

   2.8

  27

Modulus of rupture

MPa

kgf / cm²

R2619

-

-

   1.7

  17

Reheat shrinkage

   at 1300^o C x 8 hrs

%

R2613

   2.0 max

   0.64

Thermal expansion at 1000^o C

%

R2617

-

   0.5

Chemical analysis

%

R2216

Al₂ O₃

-

  42.1

Si O₂

-

  50.2

Fe₂ O₃

-

   1.6

CaO

-

   0.4

Dimensional tolerance

mm

R2150

length

230

+ 3.5

+ 1.3

width

114

+ 2.0

+ 1.0

thickness

65

+ 2.0

+ 1.0

Standard Packing

10 pcs / pack for standard size