| Technical Indexes of PL – 37 | ||
| Max. service temperature | 1.750ºC | |
| Min. time before firing | Anytime after installation | |
| Setting characteristic | Air & heat setting | |
| Weight to place (t/m3) | 2.75 | |
| Bulk density (g/cm3) | 110ºC (24h) | 2.60 |
| Al2O3 | 75 | |
| Chemical composition (%) | SiO2 | 16 |
| Linear change (%) | 110ºC (24h) | -1.2 |
| 1000ºC (3h) | -1.4 | |
| 1300ºC (3h) | -1.6 | |
| 110ºC (24h) | 2.5 | |
| 1000ºC (3h) | 3.0 | |
| Modulus of rupture (Mpa) | 1300ºC (3h) | 4.0 |
| 1500ºC (3h) | 5.0 | |
| 500ºC | 1.023 | |
| Thermal conductivity | 1000ºC | 1.151 |
| Thermal expansion (perºC) | 8.0×10-6 | |
| Packing | 30 kg/doos | |
| Storage life (month) | 4 | |
| Installation | Ramming | |
