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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 | ||
Standard | EN1423,1424;AASHTO ,M247;BS6088;JISR3301;KS L2521 ETC. |