IS 9428

ASTM

C533:90

HE GRADE

TYPE I

TYPE II

800

1000

Temperature ? MAX.

950

649

871

800

1000

Bulk Density: (kg/m3)

TEST VALUES

Avg.Value:

200-320

220-280

(max)

240

(max)

240

220-270

230-275

Compressive strength,

Reduction in thickness, max.

Dry, under a load of 415 KN/m2

Wet, under a load of 170 KN/m2

After 18 hrs. Of immersion in water.

Dry, under a load of 345 KN/m2

After 24 hrs heat soak:

5%

5%

5%

5%

-

-

5%

-

-

3%

3.5%

3.5%

3%

3.5%

3.5%

Flexural Strength (KN/m2) min.

240

310

310

400

400

Linear shrinkage (length),

Max.

Typical

Loss in mass. Max.

2 %

-

15 %

2 %

-

-

2.5 %

-

-

2 %

1.6 %

15 %

2 %

1.8 %

15 %

Thermal Conductivity (W/mk)

Max. At mean temp.

200 C

300 C

400 C

500 C

0.080

0.097

0.121

0.147

0.079

0.095

-

-

0.095

0.110

0.136

-

0.070

0.080

-

-

0.080

0.090

0.105

0.120

Cold crushing Strength (CCS)

(Kg/cm2), min

Light Grade (k/value0.12W/mk)

Medium Grade( " 0.15W/mk)

10

25