Internationale codenaam
|
SK35 | SK36 | SK37 | SK38 | SK40 |
Al2O3/%
|
≥48 | ≥55 | ≥65 | ≥75 | ≥80 |
Fe2O3/%
|
≤2 | ≤2 | ≤2 | ≤2 | ≤2 |
Refractoriteit
|
≥1750 °C. | ≥1770 °C. | ≥1790 °C. | ≥1790 °C. | ≥1790 °C. |
Schijnbare poreusheid
|
≤22% | ≤22% | ≤23% | ≤23% | ≤21% |
Koude verbrijzeling
|
≥39 MPa | ≥44 MPa | ≥49 MPa | ≥54 MPa | ≥65 MPa |
Refractoriteit onder belasting (0, 2 MPa)
|
≥1420 °C. | ≥1470 °C. | ≥1500 °C. | ≥1520 °C. | ≥1530 °C. |
Lineaire verandering van herverwarming (1500°C 2h) % |
+0.1~ -0, 4
*1450°C. |
+0.1~ -0, 4 | +0.1~ -0, 4 |
|
+0.1~ -0, 4 |