SiO2 ≤0.15%

Fe2O3 ≤0.12%

CaO+MgO ≤0.2%

TiO2 ≤0.06%

NaO ≤0.2%

K2O ≤0.1%

Gpa

300

Mohs Hardness

9

Specific Heat,30℃~100℃

J/Kg·K

850~1050

Thermal Conductivity, 30℃~100℃

W/M·K

19~30

Coefficient of Thermal Expansion, 30℃~100℃

10-6 K-1

7~9

Heat Resistance

up to 0℃

1650

Bulk Density (g/cm3)

Packing Density (t/m3)

Water Absorption (%)

Compression strength (N)

Inch

mm

1/8”

3

3.30~3.60

2.00~2.20

max.6

500

1/4”

6

3.30~3.60

2.00~2.20

max.2

2500

3/8”

10

3.30~3.60

2.00~2.20

max.2

4000

1/2”

13

3.30~3.60

2.00~2.20

max.2

5000

5/8”

16

3.30~3.60

2.00~2.20

max.2

5000

3/4”

20

3.30~3.60

2.00~2.20

max.2

5000

1”

25

3.30~3.60

2.00~2.20

max.3

8000

11/4 ”

30

3.30~3.60

2.00~2.20

max.3

8000

11/2 ”

40

3.30~3.60

2.00~2.20

max.3

8000

2”

50

3.30~3.60

2.00~2.20

max.3

15000