Brand of name

Index

Silicon carbide castable

Self-flow corundum castable

High strength wear-resistant castable

Steel fiber abrasion resistant castable

Mullite castable

Phosphate castable

High alumina castable

AI2O3 %

≥20

≥90

≥80

≥70

≥75

≥80

SiC %

≥55

≤15

Fe2O3 %

≤1.5

≤1.0

SiO2 %

≤10

Bulk density g/cm3

≥2.6

≥2.8

≥2.7

≥2.8

≥2.6

≥2.2

≥2.6

Compressive strength Mpa110

≥85

≥110

≥120

≥90

≥40

≥65

≥80

Compressive strength Mpa1100

≥120

≥130

≥125

≥100

≥75

≥80

≥100

Flexural strength Mpa110 C

≥12

≥12

≥14

≥9

≥8

≥8

≥10

Flexural strength Mpa1100 C

≥15

≥15

≥16

≥12

≥12

≥10

≥13

Refractoriness ℃

1800

1800

1800

1800

1800

1700

1800

The rate of change of reheating line（1100℃×3h）%

±0.4

±0.1

±0.2

±0.4

≤-0.4

≤-0.5

±0.3

Thermal shock stability（1100℃windcyele）

≥40

≥30

≥38

≥20

≥42

≥30

≥20

Wear resistance cc

＜5

＜6

≤6

≤6

≤12

≤14

≤12