≥1 piece |
Precision Casting Sand | ||||||
The Physical and chemical indicators | ||||||
Grade | Fe2O3% max |
AL203% min |
SiO2% min |
TiO2% max |
B.Dg/ccm min |
Refractoriness ℃ |
A Prime Grade | 1.20 | 46.00 | 50.50 | 0.70 | 2.55 | 1750 |
High Grade | 1.50 | 44.00 | 51.50 | 0.90 | 2.53 | 1750 |
Normal Grade | 2.30 | 43.00 | 52.50 | 1.00 | 2.50 | 1730 |
200 mesh | ||||||
200 mesh | 90% min | |||||
22S (16---30 mesh) | ||||||
16-12 mesh | 1.18-1.70mm | 25-35% | ||||
20-16 mesh | 0.85-1.18mm | 40-50% | ||||
30-20 mesh | 0.60-0.85mm | <25% | ||||
50-30 mesh | 0.30-0.60mm | 0.02% | ||||
—50 mesh | 0.00-0.30mm | 0.04-0.06% | ||||
35S (30-60 mesh) | ||||||
50-30 mesh | 0.30-0.60mm | 65-75% | ||||
80-50 mesh | 0.18-0.30mm | 1.00% | ||||
—80 mesh | 0.00-0.18mm | 0.04-0.06% |