Model Number

10

a.RL-65
Al2O3>65
Refractoriness°C>1790
Refractoriness under load°C >1500
Linear change after heating 1500°C,2h +0.1 ; -0.4
1450°C,2h
Apparent porosity (%)<24
Cold crushing strength(Mpa)>49

b.RL-55
Al2O3>55
Refractoriness°C>1770
Refractoriness under load°C>1470
Linear change after heating 1500°C,2h +0.1 ; -0.4
1450°C,2h
Apparent porosity (%)< 24
Cold crushing strength(Mpa) > 44.1

c.RL-48
Al2O3>48
Refractoriness°C>1750
Refractoriness under load°C>1420
Linear change after heating 1500°C,2h
1450°C,2h +0.1 ; -0.4
Apparent porosity (%)< 24
Cold crushing strength(Mpa) > 39.2

d.RN-42
Al2O3>42
Refractoriness°C1750
Refractoriness under load°C>1400
Linear change after heating 1500°C,2h 0 ; -0.4
1450°C,2h
Apparent porosity (%)< 24
Cold crushing strength(Mpa)>29.4

e.RN-40
Al2O3>40
Refractoriness°C>1730
Refractoriness under load°C>1350
Linear change after heating 1500°C,2h
1450°C,2h 0 ; -0.3
Apparent porosity (%)< 24
Cold crushing strength(Mpa)>24.5

f.RN-36
Al2O3>36
Refractoriness°C>1690
Refractoriness under load°C>1300
Linear change after heating 1500°C,2h
1450°C,2h 0 ; -0.3
Apparent porosity (%)< 26
Cold crushing strength(Mpa) >19.6