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棕剛玉理化指標(biāo):
| 用途 | 規(guī)格 | 主要化學(xué)成分% | 磁性物% | ||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
| 磨料磨具 | F | 4#—80# | ≥95 | ≤0.3 | ≤1.5 | ≤3.0 | ≤0.05 | 
| 90#—150# | ≥94 | ≤0.03 | |||||
| 180#—240# | ≥93 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
| P | 8#—80# | ≥95.0 | ≤0.2 | 
				 ≤1 .2  | 
			≤3.0 | ≤0.05 | |
| 100#—150# | ≥94.0 | ≤0.03 | |||||
| 180#—220# | ≥93.0 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
| W | 1#-63# | ≥92.5 | ≤0.5 | ≤1.8 | ≤4.0 | — | |
| 耐火材料 | 段砂 | 
				0-1mm 1-3mm 3-5mm 5-8mm 8-12mm  | 
			≥95 | ≤0.3 | ≤1.5 | ≤3.0 | — | 
| 
				25-0mm 10-0mm 50-0mm 30-0mm  | 
			≥95 | ≤0.3 | ≤1.5 | ≤3.0 | — | ||
| 細(xì)粉 | 
				180#-0 200#-0 320#-0  | 
			≥94.5 ≥93.5 | ≤0.5 | ≤1.5 | ≤3.5 | — | |
| 項目 | 指標(biāo) | 
| 顏 色 | 深棕(煅燒后深藍(lán)) | 
| 晶形 | 三方晶系 | 
| 硬度(莫氏) | ≥9.0 | 
| 熔點(℃) | 2250 | 
| 高使用溫度(℃) | 1900 | 
| 真密度(g/cm3) | ≥3. 90 | 
| 線膨脹系數(shù)(0—1600℃) | 7—9 |