项 目 \ 牌 号 | CBF40-A | CBF40-B | CBF50-A | CBF50-B | CBF60-A | CBF60-B | | Al2O3 % | 42-53 | 45-53 | ≥45 | ≥50 | ≥60 | ≥58 | | Fe2O3 % | ≤1.6 | ≤1.6 | ≤1.0 | ≤1.2 | ≤1.1 | ≤1.4 | | TiO2 % | | | ≤1.5 | ≤2.0 | | | | CaO+MgO % | ≤0.7 | ≤0.7 | | | | ≤0.7 | | K2O+Na2O % | ≤0.8 | ≤0.8 | ≤0.6 | | | ≤0.8 | | 耐火度 ℃ | ≥1750 | ≥1750 | | | ≥1770 | ≥1750 | | 显气孔率 % | 11-19 | 11-19 | ≤16 | ≤14 | ≤18 | 11-19 | | 体积密度 g/cm3 | ≥2.20 | ≥2.20 | ≥2.35 | ≥2.40 | ≥2.45 | ≥2.35 | | 常温耐压强度 Mpa | ≥40 | ≥50 | ≥40 | ≥60 | ≥70 | ≥60 | | 荷重软化温度 ℃ | T0.5≥1450 | T0.5≥1490 | T0.5≥1470(示差法) | T0.5≥1500 | T0.5≥1600 | T0.5≥1600 | | 重烧线变化率 % | 1450℃×2h
+0.1～-0.1 | 1450℃×2h
+0.1～-0.1 | | | 1600℃×2h
±0.2 | | 蠕变率 %
0.2Mpa,(0-25h) | 1280℃
≤0.4 | 1280℃
≤0.25 | 1280℃×(14-24)h
≤0.007 | 1350℃×(20-50)h
≤0.2 | 1280℃
≤0.1 | | 高温抗折强度 MPa
1350℃×0.5hr | ≥4 | ≥4 | ≥6 | 1370℃×0.5hr
≥6 | | ≥6 | | 线膨胀率, 1000℃ % | ≤0.7 | ≤0.7 | | | | ≤0.65 |
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