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
Size
Type Mesh Micronsm Max(μm) Microns Min(μm)
30# 20-40 850 425
40# 30-40 600 425
60# 40-60 425 300
80# 60-100 300 150
100# 70-140 212 106
120# 100-140 150 106
150# 100-200 150 75
180# 140-200 106 75
220# 140-270 106 53
280# 200-325 75 45
320# >325 45 25


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