China Low Creep Fireclay Refractory Brick Fire Brick, Find details about China Fireclay Brick, Refractory Brick from Low Creep Fireclay Refractory Brick Fire Brick
Items | Low creep fireclay brick | Low porosity fireclay brick | Special high alumina brick | Special andalusite brick | ||
Chemical composition | Al2O3 % | 42-53 | ≥42 | ≥58 | 55-60 | |
Fe2O3 % ≤ | 1.6 | 2.0 | 1.5 | 1.2 | ||
CaO+MgO % ≤ | 0.7 | 0.7 | 0.7 | 0.4 | ||
Na2O+K2O % ≤ | 0.8 | 0.8 | 0.8 | 0.5 | ||
Bulk density g/cm3 ≥ | 2.2 | 2.2 | 2.45 | 2.25 | ||
Apparent porosity %≤ | 19 | 17 | 20 | 18 | ||
CCS Mpa ≥ | 40 | 40 | 50 | 60 | ||
0.2MpaRUL T0.6 ºC≥ | 1450 | 1450 | 1600 | 1600 | ||
% Creep rate 1280ºC,25h, 0.2Mpa ≤ | 0.4 | -- | 0.4 | 0.2 | ||
MOR Mpa ≥ | 1200ºC | 10 | -- | -- | 12 | |
1350ºC | 4 | -- | 6 | 6 | ||
20-1000ºC Thermal expansion % ≤ | 0.7 | 0.7 | 0.7 | 0.6 | ||
Refractoriness ºC ≥ | - | - | - | 1790 | ||
P.L.C 1500ºC*2h | - | - | - | -0.1-+0.1 | ||
T.S.R 1100ºCwater cooling -cycle ≥ | - | - | - | 35 |