Specifications: 1.Classification Temp（°C）: 1260-1600 Continuous Working Temp（°C）: 1260;1400;1450 2.Theoretical thermal Conductivity w/m.k (300KG/M3) (Mean) 0.085(400°C) 0.132 (800°C) 0.180(1000°C) 3.Density（kg/m3) 280/300/320/360 4.Compressive Strength(MPa) ≥0.5 5.Shrinkage on heating (%)≤3 1100°C x24h 1300°C x24h 6. Size: 900x600x25mm;900x600x50mm