Shandong Hiking International Commerce Group Co.,LTD |
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Grade | Standard | High Pure | High Aluminium | Zirconium | |||
Max. Temperature (℃) | 1050 | 1150 | 1360 | 1430 | |||
Shrinkage on Heating (%) | 800℃×24h≤-3 | 1000℃×24h≤-3 | 1280℃×24h≤-3 | 1400℃×24h≤-3 | |||
Organic Content (%) | ≤5 | ≤5 | ≤5 | ≤5 | |||
Thermal conductivity by mean temp. (W/m.k.) (250kg/m3) | 200℃ | 0.055~0.065 | 0.060~0.070 | ||||
400℃ | 0.110~0.120 | 0.105~0.125 | |||||
600℃ | 0.160~0.170 | 0.170~0.180 | |||||
Chemical Composition (%) | AL2O3 | 43 | 47 | 55 | 38 | ||
SiO2 | 53 | 51 | 44 | 44 | |||
Fe2O3 + Ti2O3 | ≤1.2 | ≤0.3 | ≤0.3 | ≤0.2 | |||
CaO + MgO | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.2 | |||
NaO + KO2 | ≤0.5 | ≤0.3 | ≤0.3 | ≤0.2 | |||
Density (kg/m3) | 170~230 |