Plastic Spherical Beads

Polystyrene Spherical Beads-PB are high-performance sandblasting microspheres made of polystyrene. Suitable for extremely delicate, surface-sensitive workpieces with extremely high requirements for surface finish, such as in the medical and aerospace industries.

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Meets MIL-P-85891A standard

Plastic Spherical Beads

Plastic Spherical Beads

Polystyrene Spherical Beads-PB are high-performance sandblasting microspheres made of polystyrene. Suitable for extremely delicate, surface-sensitive workpieces with extremely high requirements for surface finish, such as in the medical and aerospace industries.

Polystyrene Spherical Beads-PB are high-performance sandblasting microspheres made of polystyrene. Suitable for extremely delicate, surface-sensitive workpieces with extremely high requirements for surface finish, such as in the medical and aerospace industries.

Explore Our Products

Meets MIL-P-85891A standard

High-quality polystyrene media for industrial deburring tasks.
Polystyrene plastic abrasive for delicate component cleaning.
Spherical polystyrene beads for effective surface finishing.
Low-dust polystyrene abrasive media for industrial applications.
PB deflashing beads for precision surface preparation.
Transparent polystyrene blasting media for gentle flash removal.

| Features

| Features

  • High transparency, light transmittance over 90%.
  • No residue, simplifying the subsequent cleaning process.
  • Precise spherical size to avoid clogging the workpiece slot.
  • Good rigidity and chemical resistance, long service life.
  • Non-toxic materials, in line with medical safety requirements.
  • Uniform high particle size ensures a consistent sandblasting effect.
  • Certified with ISO9001 and ISO14001 standards.
• High transparency, light transmittance over 90%.
• No residue, simplifying the subsequent cleaning process.
• Precise spherical size to avoid clogging the workpiece slot.
• Good rigidity and chemical resistance, long service life.
• Non-toxic materials, in line with medical safety requirements.
• Uniform high particle size ensures a consistent sandblasting effect.
• Certified with ISO9001 and ISO14001 standards.
Polystyrene Spherical Beads-PB
Texture of Material Polystyrene
Grain Shape Sphere
Particle Color Transparent white
True Specific Gravity 1.461–1.53
Bulk Density 0.93–0.96g/cm³
Stretching Force 2750
Bending Stress 21000
Water Absorption Rate 23℃ 1.8
Molding Shrinkage Rate 1.2—1.5
Surface Resistivity <109
HDT 205℃
Melting Point 220℃
Smell Odorless
Iron Content 0.05
Spherical Particles Φ0.2–1.2
Available Sizes
Name Sieve size Inches mm
PB (0.61-0.99) 18/30 .039/.024 0.99/0.61
PB (0.36-0.61) 30/45 .024/.014 0.61/0.36
PB (0.36-0.50) 35/45 .020/.014 0.50/0.36
PB (0.15-0.36) 45/100 .014/.006 0.36/0.15
PB (0.15-0.25) 60/100 .010/.006 0.25/0.15
PB (1.0-1.2) 1.2/1.0
PB (1.2-1.4) 1.4/1.2
PB (1.4-1.6) 1.6/1.4
PB (1.6-1.8) 1.8/1.6
PB (1.8-2.0) 2.0/1.8
Polystyrene Spherical Beads-PB
Texture of Material Polystyrene
Grain Shape Sphere
Particle Color Transparent white
True Specific Gravity 1.461–1.53
Bulk Density 0.93–0.96g/cm³
Stretching Force 2750
Bending Stress 21000
Water Absorption Rate 23℃ 1.8
Molding Shrinkage Rate 1.2—1.5
Surface Resistivity <109
HDT 205℃
Melting Point 220℃
Smell Odorless
Iron Content 0.05
Spherical Particles-Test Φ0.2–1.2
Available Sizes
Name Sieve size Inches mm
PB (0.61-0.99) 18/30 .039/.024 0.99/0.61
PB (0.36-0.61) 30/45 .024/.014 0.61/0.36
PB (0.36-0.50) 35/45 .020/.014 0.50/0.36
PB (0.15.0.36) 45/100 .014/.006 0.36/0.15
PB (0.15-0.25) 60/100 .010/.006 0.25/0.15
PB (1.0-1.2) 1.2/1.0
PB (1.2-1.4) 1.4/1.2
PB (1.4-1.6) 1.6/1.4
PB (1.6-1.8) 1.8/1.6
PB (1.8-2.0) 2.0/1.8

| Applications

| Applications

  • Deburrs sensitive electronics and precision rubber parts;
  • Grind for medical device and equipment manufacturing;
  • Clean molds to optimize surface finish;
  • Precision blast aerospace parts to avoid cracks;
  • Standard tests in optics and scientific research.;
• Deburrs sensitive electronics and precision rubber parts;
• Grind for medical device and equipment manufacturing;
• Clean molds to optimize surface finish;
• Precision blast aerospace parts to avoid cracks;
• Standard tests in optics and scientific research;

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