Refractory Runner Sleeve Brick

Item

HA60

HA70

HA50

HA40

AL2O3(%)

≥60

≥70

≥50

≥40

SIO2(%)

32

22

35

≥38

Fe2O3(%)

≤1.7

≤1.8

≤1.9

≤2.2

Refractoriness °C

1790

＞1800

＞1770

≥1740

Bulk density,g/cm3

2.3

2.45

2.25

2.15

Softening temperature under load

≥1470

≥1520

≥1450

≥1420

Apparent porosity,%

22

＜22

＜24

26

Cold Crushing strength Mpa

≥45

≥50

≥42

≥39