ITEM | Low Porosity Fire Clay Bricks | ||||||
DN-10 | DN-12 | DN-15 | DN-17 | ||||
Al2O3/% | ≥46 | ≥45 | ≥42 | ≥40 | |||
Fe2O3/% | ≤1.1 | ≤1.2 | ≤1.5 | ≤2.0 | |||
Bulk density/g/cm3 | ≥2.40 | ≥2.37 | ≥2.30 | ≥2.25 | |||
Refractoriness/ ℃ | ≥1700 | ≥1690 | ≥1750 | ≥1770 | |||
Refractoriness under Load/KD ℃ | ≥1520 | ≥1500 | ≥1470 | ≥1420 | |||
Permanent Linear Change/% | 1400℃×2h +0.0 | 1400℃×3h +0.05~-0.10 | 1400℃×3h +0.1~-0.2 | 1400℃×2h | |||
Apparent Porosity/% | ≤10 | ≤12 | ≤15 | ≤17 | |||
Cold crushing strength/Mpa | ≥65 | ≥65 | ≥55 | ≥50 |
Fire Clay Bricks SK SERIES | ||||||||
ITEM | SK30 | SK32 | SK34 | SK35 | ||||
Al2O3/% | 33% | 38% | 42% | 48% | ||||
Fe2O3/% | ≤3 | ≤3 | ≤3 | ≤2.5 | ||||
Refractoriness/ ℃ | ≥1690 °C | ≥1730 °C | ≥1750 °C | ≥1750 °C | ||||
Bulk density/g/cm3 | 1.9-2.0 | 2.0-2.1 | 2.1-2.18 | 2.15-2.3 | ||||
Unit weight (230*114*65mm) | ≥3.35KGS | ≥3.55KGS | ≥3.65KGS | ≥3.75KGS | ||||
Apparent porosity/% | ≤26 | ≤24 | ≤24 | ≤22 | ||||
Cold crushing strength | ≥20Mpa | ≥25Mpa | ≥30Mpa | ≥35Mpa | ||||
Refractoriness under load/ ℃ | ≥1250 °C | ≥1300 °C | ≥1350 °C | ≥1420 °C | ||||
Reheating Linear Change/% | 0~ -0.5 (1350°C,2h) | 0~ -0.3 (1350°C,2h) | 0~ -0.4 (1450°C,2h) | +0.1~ -0.4 (1450°C,2h) |