Perla de Vidrio Abrasiva

Especificación Típica de Perla de Vidrio para abrasivos
Chemical Name & Synonyms Soda-lime Silicate-Glass
Chemical Family Silicate glass without free silica
Formula
SiO2 71-73% Na2O 13-15%
MgO 3-5% CaO 8-10%
Al2O3 0.5-2% K2O 0.2-0.6%

 

Physical Properties
Boiling Point N/A Vapour Pressure N/A
Percent Volatile by Volume Nil Vapour Density N/A
Evaporation Rate N/A Odour Nil
Refractive Index 1.52 Oil Absorption (ASTM) 17
Solubility in Water Not Soluble Mohs 6
Absolute Specific Gravity (H2O=1)2.46 Knoop Load 100: 515kg/mm2
Absolute Specific Gravity 1.6kg/dm3 Hardness DPH Load 50kg: 540kg/mm2
Specific Heat Average 0.18kcal/mhoC Dielectric Strength 4,500kv/cm
Dielectric Constant 7.2(1MC at 20oC) Expansion Coefficient 8.5*10-6

 

Grades / Sizes
Microns Mesh Inches Sphere Count
590-840 20-36 .0234-.0331 65%
420-590 30-40 .0165-.0234 70%
250-420 40-60 .0098-.0165 70%
177-297 50-80 .0070-.0117 80%
149-250 60-100 .0059-.0098 80%
105-210 70-140 .0041-.0083 80%
74-149 100-200 .0029-.0059 90%
53-105 140-270 .0021-.0041 90%
44-88 170-325 .0017-.0035 95%
30-62 270-500 .0012-.0024 95%