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3M™ Glass Bubbles K46

Glass Bubbles
Glass Bubbles
3M™ Glass Bubbles K46 have a density of 0.46 g/cc and an isostatic crush strength of 6000 psi. The general purpose K Series glass bubbles are the most economical 3M glass bubbles.
  • Lower viscosity, improved flow
  • Increased filler loading, reduced cost
  • VOC reduction
  • Chemical stability and inertness
  • Reduced dielectric constant
  • Thermal conductivity reduction
  • Temperature resistance
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With an isostatic strength of 6000 psi, 3M K46 glass bubbles can be effectively used in ultra-deep water. They produce strong stable voids with low thermal conductivity, helping the coating achieve necessary compressive strength and insulation. Like all 3M glass bubbles, K46 glass bubbles are virtually insoluble in water or oil providing better utility in underwater applications.

Typical Properties

 Capabilities‎‎ Increased Production Throughput,‎ Temperature Resistance,‎ Lightweighting,‎ Chemical Resistance
 Color (unaided eye)‎‎ White, powdery
 Composition‎‎ Soda-lime-borosilicate glass
 Crush Strength (PSI)‎‎ 6,000
 Density (g/cc)‎‎ 0.46
 Industries‎‎ Paints and Coatings,‎ Transportation,‎ Rubber and Plastic,‎ Insulation and Buoyancy
 Particle Size (D50 Micron)‎‎ 40
 Particle Size Range (D50 Micron)‎‎ 40 - 49
 Shape‎‎ Hollow spheres with thin walls
 Sizes Available‎‎ Large Box (125 lb, 56.6 kg),‎ Small Box (10 lb, 4.5 kg),‎ 4 ft Bag (825 lb, 374.2 kg),‎ 1 Gallon Container (2 lb, 0.9 kg),‎ Large Box (785 lb, 356 kg)
 Strength (MPa)‎‎ 41.3