SiC%

Fe2O3

AI2O3%

Dissociative  SI＋SIO2%

Dissociative C%

≥98

≤0.5

≤0.02

≤0.4

≤0.3

Specific weight

3.2

Moh's hardness

9.5～9.8

Tensile strength

>1.50

Porosity %

25～32

specific heat  Kcal/Kg C

0 C

0.148

 rates of radiationλ=0.65μ

0.87

average coefficient of linear expansion 10￣ M/C

600C

4.3

400C

0.255

thermal conductivity

Kcal/Mh C

600C

14～ 18

900C

4.5

800C

0.294

1100C

12～ 16

1200C

4.8

1200C

0.325

1300C

10～ 14

1500C

5.2

1600C

0.355