Chromite sand is suitable for steel casting including foundry such as：
Green Sand molding；
Shell molding；
Pep-Set system；
Furan Resin and Alkaline-phenolic Resin；
Core moulding
Lost foam casting
How to Choose grit size？
Generally，the smaller casting need to make, the finer grit size foundry adopted.The following frame shows it for reference:
| Less than 500KGS | 500-1000KGS | 1-10 Tons | 10-30 Tons | 30-100 Tons |
| AFS40-70 | AFS 45-50 | AFS 45-50 | AFS40-45 | AFS 35-40 |
Specification
| CHEMICAL COMPOSITION | |
| Cr2O3 | ≥46.0% |
| SiO2 | ≤1.0% |
| FeO | ≤26.5% |
| CaO | ≤0.3% |
| MgO | ≤10% |
| AL2O3 | ≤15.5% |
| P | ≤0.003% |
| S | ≤0.003% |
| Cr/Fe | 1.55:1 |
| TYPICAL PHYSICAL PROPERTIES | |
| Hardness: | Mohs:5.5-6 |
| Melting Point: | Sublimes at 2180 ℃ |
| Sintering point: | >1800℃ |
| The sintered | 1600℃ |
| Specific Gravity: | 4.0-4.8 g/cm3 |
| Bulk density(LPD): | 2.5-3 g/cm3 |
| Color: | Black |
| PH | 7-9 |
| Percentage of free acid present in the sand | 0% |
| The amount of the acid | ≤2ML |
| Percentage of soil | ≤0.1 |
| Percentage of Moisture | ≤0.1 |
| AVAILABLE SIZES | |
| AFS15-20,AFS15-25,AFS25-35,AFS25-30,AFS30-35,AFS35-40,AFS40-45,AFS45-50,AFS40-50,AFS50-55,AFS55-60,AFS60-65 customized sizes are available upon request | |