Project | Quality |
Chemical composition% | SiO2 | >72% |
CaO | >8% |
Na2O | <14% |
MgO | >2.5% |
Al2O3 | 0.5-2.0% |
Fe2O3 | 0.15% |
Others | 2.0% |
Refractive Index | Nd≥1.5% |
Density | 2.4-2.6g/cm3 |
Size distribution | Oversize ≤5% under size ≤10% |
Wire diameter | 0.03-0.4mm |
Durability | 3-5 % |
Hardness | 6-7 MOHS ;46HRC |
Microhardness | ≥650kg/cm3 |
Circularity | Round rate of ≥95% |
Appearance | colorless ,glass transparent without impurities,Round and smooth |
Application | 1.Grinding 2.Road marking paint 3.Sand blasting |
Lead Content | No lead content, reach American 16CFR 1303 Lead content standard |
Harmful substances content | Lower than American 16CFR 1500 standard |
Flammable fire test | Not easy combustion,reach American 16CFR 1500.44 standard |
Soluble heavy metal content | Metal content of soluble matter ratio solid weight rate no more than ASTM F963 corresponding value |
Package | 25KG/pp bag then 40 bags in one ton bag/pallet |