| 項目Item | 指標Index | 
  | 化學成分(%)   Chemical Composition | SiC,% | ≥72 | 
  | Si3N4 | ≥18 | 
  | Fe?O?,% | ≤1.0 | 
  | 耐火度,℃ Refractoriness | ≥1790 | 
  | 顯氣孔率,% Apparent porosity | ≤16 | 
  | 體積密度,g/cm³ BulkDensity | ≥2.6 | 
  | 常溫耐壓強度,Mpa Cold Crushing Strength | ≥180 | 
  | 高溫抗折強度,Mpa Modulus of Rupture,Mpa | 1100℃X0.5h | ≥50 | 
  | 熱震穩定性,次 Thermal Shock Resistance | 1100℃-水冷(cold water) | ≥60 | 
  | 0.2MPa荷重軟化開始溫度,℃ 0.2MPa Refractoríness under load | ≥1600 | 
  | 熱膨脹率,%1000℃ Thermal Expansivity | ≤0.60 |