email:sales@bnp.com.sg
tel: +65 6505 9098

glass beads
Glass Beads are a spherical abrasive manufactured from chemically inert soda lime glass. Glass Beads are used for cleaning, finishing, light peening, deburring, sanitizing, descaling, coating removal, polishing and surface blending.

Glass Beads produce a bright satin finish; finer beads produce a smoother non glare finish, while larger beads produce a deeper textured finish. Blasting with Glass Beads does not produce any dimension changes to the part base surface.

Applications
Cleaning, surface finishing and sanitizing of metallic parts, especially effective on stainless steel, ie food processing equipment, medical instruments.

Shot peening of aircraft engine blades, turbine rotors, gears, blisks, shafts, steam and gas turbine components. Stress corrosion cracking prevention.

Deburring and surface blending of gears, turbocharger parts, ferrous and non ferrous fabrications, aluminium die castings and machined parts.

Size Details
Bead No.B / 3C / 4AA / 5D / 6AB / 7AC / 8
Size in inch .0165 - .0234 .0098 – .0165 .0083 – .0165 .0083 – .0117 .0070 – .0117 .0059 – .0098
Size in µm 425 - 600 250 - 425 212 - 425 212 - 300 180 - 300 150 - 250
% round 60 75 70 75 70 80
Size Details
Bead No.AD / 9AE / 10AG / 11AH / 12AI / 13INDA
Size in inch .0041 – .0083 .0035 – .0059 .0021 – .0041 .0017 – .0035 .0000 – .0021 .0098 – .0165
Size in µm 106 - 212 90 - 150 53 - 106 45 - 90 0 – 53 250 - 425
% round 80 85 85 85 85 85
Physical Properties
HardnessSpecific GravityBulk DensityShapeFree SilicaFree IronColour
6 - 7 Mohs 2.45—2.50 g/cm³ ≈ 1500kg/m³ Spherical NIL < 1% Clear
Typical Chemical Composition
SiO2Al2O3Fe2O3MgOCaONa2OOther
≥ 70% 0.5 - 2% ≤ 0.15% ≥ 2.5% ≥ 8% ≥ 14% ≤ 2%

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