ورق های هسته 
آمیژان ها و هاردنرها 
Chemical Composition (on dry basis)
| Guaranteed (%) | |
| Fe | 66 Min |
| SiO2 | 2.5 Max |
| Al2O3 | 1.5 Max |
| CaO | 0.8 |
| MgO | 0.2 |
| P | 0.05 Max |
| S | 0.007 Max |
| CaO/SiO2 | 0.32 |
Chemical Composition (on dry basis)
| Guaranteed (%) | |
| Fe | 66 Min |
| SiO2 | 2.5 Max |
| Al2O3 | 1.5 Max |
| CaO | 0.8 |
| MgO | 0.2 |
| P | 0.05 Max |
| S | 0.007 Max |
| CaO/SiO2 | 0.32 |
