Types

RS-HA-1

RS-HA-2

RS-HA-3

RS-HA-4

RS-HA-5

RS-HA-6

RS-HA-7

RS-HA-8

Al2O3  %

≥48

≥55

≥60

≥65

≥70

≥75

≥80

≥85

Fe2O3  %

≤2.5

≤2.5

≤2.5

≤2.0

≤2.0

≤2.0

≤2.0

≤1.8

Refractoriness °C

1750

1770

1790

1790

1790

1790

1790

1790

Apparent porosity  %

≤23

≤23

≤23

≤22

≤22

≤22

≤21

≤21

Bulk density g/cm3

2.1

2.2

2.3

2.4

2.5

2.65

2.7

2.75

Refractoriness under load 0.2MPa °C

1420

1470

1480

1500

1510

1520

1530

1550

Cold crushing strength MPa

40

44

45

49

52

55

60

70

Permanent linear change %

1500°C×2h

~

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

1450°C×2h

+0.1~-0.4

~

~

~

~

~

~