| Oxide (%) | Clay | PCS |
|---|---|---|
| SiO2 | 68.03 | 49.16 |
| Al2O3 | 17.86 | 12.99 |
| Fe2O3 | 8.46 | 7.78 |
| MgO | 0.73 | 1.03 |
| CaO | 0.33 | 0.90 |
| TiO2 | 0.83 | 0.48 |
| K2O | 3.30 | 0.29 |
| BaO | --- | 0.08 |
| SO3 | --- | 0.68 |
| Na2O | --- | 0.38 |
| MnO | 0.24 | 0.16 |
| ZnO | 0.06 | --- |
| LOI | 3.30 | 25.65 |
| Materials | AF00 | AF20 | AF30 | AF40 | AF50 |
|---|---|---|---|---|---|
| Clay | 100 | 80 | 70 | 60 | 50 |
| PCS | 0.0 | 20 | 30 | 40 | 50 |
| Linear Retraction (%) | 85ºC | 900ºC | 1000ºC |
|---|---|---|---|
| AF00 | 1.50±0.16 | 1.65±0.01 | 1.97±0.36 |
| AF20 | 1.38±0.03 | 1.27±0.07 | 2.07±0.11 |
| AF30 | 1.00±0.08 | 1.10±0.67 | 1.90±0.01 |
| AF40 | 0.66±0.08 | 1.01±0.07 | 1.67±0.07 |
| AF50 | 0.31±0.42 | 0.84±0.15 | 1.68±0.14 |
| Density (g/cm3) | Green | 850ºC | 900ºC | 1000ºC |
|---|---|---|---|---|
| AF00 | 1.94 | 1.81 | 1.89 | 1.90 |
| AF20 | 1.93 | 1.78 | 1.79 | 1.82 |
| AF30 | 1.99 | 1.73 | 1.71 | 1.74 |
| AF40 | 1.93 | 1.68 | 1.64 | 1.70 |
| AF50 | 1.90 | 1.63 | 1.56 | 1.63 |
| Parameters analyzed | Ba | Cr | Al | Fe |
|---|---|---|---|---|
| NBR 10005 (mg/L) | 100 | 5 | 4 | 6 |
| Casting sand | 0.95 | < 0.004 | 1.4 | 0.47 |
| 30 AF | 0.90 | < 0.004 | < 0.001 | < 0.002 |
