Silver-Coated Glass Microspheres (Ag@Glass)
Ag@Glass hollow microspheres pair a lightweight hollow glass core with a silver conductive shell, giving EMI shielding performance close to solid silver fillers at a fraction of the density.
~20 wt% AgCoating Content
5-150 µmParticle Size Range
Custom Made-to-OrderGrade, Size & Quantity
WorldwideExport Shipping
Silver-Coated Glass Microspheres — Grades & Specifications
Silver-Coated Glass Microspheres (Ag@Glass) powder is supplied across a range of grades, particle sizes and coating ratios. The options below are typical; specify your target values in the request form and we will confirm availability, lead time and pricing.
| Material | Silver-Coated Glass Microspheres (Ag@Glass) |
|---|---|
| Category | Metal-Coated Powder |
| Core material | Hollow soda-lime borosilicate glass microspheres |
| Coating / shell material | Silver (CAS 7440-22-4) |
| Coating content | Commonly around 20 wt% Ag on commercial reference grades, though exact loading varies by supplier and can be customized |
| Particle size | Broad commercial range of approximately 5-150 um; a representative reference grade has an average diameter near 13 um |
| Morphology | Spherical, hollow glass shell core with a silver metal outer coating |
| Appearance | Bright metallic silver-gray free-flowing powder |
| Shielding Performance | Effective EMI shielding (commonly cited above 45 dB) is achievable at roughly 20 wt% loading in a polymer matrix, at far lower density than solid silver particle fillers |
| Typical applications | Lightweight EMI/RFI Shielding Fillers, Conductive Paints & Coatings, Conductive Adhesives, Aerospace Lightweight Conductive Components |
Applications by Industry
Lightweight EMI/RFI Shielding FillersAchieves strong shielding effectiveness at moderate loading, far lighter than solid silver particles.
Conductive Paints & CoatingsUsed for conductive/EMI-shielding coatings in electronics enclosures.
Conductive AdhesivesLow-density conductive filler for aerospace and mass-critical bonded assemblies.
Aerospace Lightweight Conductive ComponentsReduces weight versus solid metal fillers while maintaining shielding effectiveness.
Defense & Specialty Shielding CompositesUsed in specialized shielding composites for defense electronics.
Flow Visualization Tracer ParticlesLow-density, reflective spheres used as flow-tracing particles in fluid dynamics research.
Particle Size & Mesh Conversion
Reference for converting between US mesh and microns/millimetres. Figures are nominal sieve openings and may vary slightly by standard.
| Mesh (US) | Micron (µm) | mm | Inch | Remarks |
|---|---|---|---|---|
| 3 | 6730 | 6.730 | 0.2650 | |
| 4 | 4760 | 4.760 | 0.1870 | |
| 5 | 4000 | 4.000 | 0.1570 | |
| 6 | 3360 | 3.360 | 0.1320 | |
| 7 | 2830 | 2.830 | 0.1110 | |
| 8 | 2380 | 2.380 | 0.0937 | |
| 10 | 2000 | 2.000 | 0.0787 | |
| 12 | 1680 | 1.680 | 0.0661 | |
| 14 | 1410 | 1.410 | 0.0555 | |
| 16 | 1190 | 1.190 | 0.0469 | |
| 18 | 1000 | 1.000 | 0.0394 | |
| 20 | 841 | 0.841 | 0.0331 | |
| 25 | 707 | 0.707 | 0.0278 | |
| 30 | 595 | 0.595 | 0.0234 | |
| 35 | 500 | 0.500 | 0.0197 | |
| 40 | 420 | 0.420 | 0.0165 | |
| 45 | 354 | 0.354 | 0.0138 | |
| 50 | 297 | 0.297 | 0.0117 | |
| 60 | 250 | 0.250 | 0.0098 | |
| 70 | 210 | 0.210 | 0.0083 | |
| 80 | 177 | 0.177 | 0.0070 | |
| 100 | 149 | 0.149 | 0.0059 | |
| 120 | 125 | 0.125 | 0.0049 | |
| 140 | 105 | 0.105 | 0.0041 | |
| — | 100 | 0.100 | 0.0039 | Sand |
| 170 | 88 | 0.088 | 0.0035 | |
| 200 | 74 | 0.074 | 0.0029 | |
| — | 70 | 0.070 | 0.0027 | |
| 230 | 63 | 0.063 | 0.0024 | Human hair |
| — | 55 | 0.055 | 0.00217 | |
| 270 | 53 | 0.053 | 0.0021 | |
| — | 50 | 0.050 | 0.00197 | |
| 325 | 44 | 0.044 | 0.0017 | |
| — | 40 | 0.040 | 0.00157 | |
| 400 | 37 | 0.037 | 0.0015 | |
| 550 | 25 | 0.025 | 0.00099 | |
| 625 | 20 | 0.020 | 0.00079 | |
| 1200 | 12 | 0.012 | 0.0005 | |
| 1250 | 10 | 0.010 | 0.000394 | |
| — | 7 | 0.007 | 0.000276 | |
| 2500 | 5 | 0.005 | 0.000197 | |
| 4800 | 3 | 0.003 | 0.000118 | |
| 5000 | 2.5 | 0.0025 | 0.000099 | Bacteria (approx.) |
| 12000 | 1 | 0.001 | 0.0000394 |
Information Required for Quotation
- Grade or type
- Particle size (micron or mesh)
- Coating content / core-shell ratio
- Quantity
- Application environment
- Required delivery country
Lead time depends on grade, particle size, quantity and processing requirements. Export availability can be reviewed based on destination country and material type. A Certificate of Analysis can be provided on request.
Request a Quote or Custom Order
Tell us your grade, particle size and quantity. We typically reply within one business day.
Frequently Asked Questions
What is the coating content of Silver-Coated Glass Microspheres?
Commonly around 20 wt% Ag on commercial reference grades, though exact loading varies by supplier and can be customized Other coating ratios can be reviewed on request depending on your application and quantity.
What particle sizes can you supply?
Broad commercial range of approximately 5-150 um; a representative reference grade has an average diameter near 13 um Mesh-based requirements are also accepted; a mesh-to-micron conversion reference is provided on the page.
Can Silver-Coated Glass Microspheres be made to custom specifications?
Yes. Silver-Coated Glass Microspheres is produced to order — core/shell ratio, particle size, morphology and packaging can be customized to your specification. Select “Custom Order” in the request form and provide your target values.
What is the minimum order quantity (MOQ)?
Order quantity is flexible and small quantities and prototype requests are welcome. Please state your required quantity in the form for an accurate quotation.
Can you export and ship Silver-Coated Glass Microspheres internationally?
Yes, export inquiries are welcome. Availability and shipping are reviewed based on destination country, grade and quantity.
Do you provide a Certificate of Analysis (COA) or technical data?
A Certificate of Analysis and technical data can be provided on request for supplied lots.
Related Products
Request a Quote for Silver-Coated Glass Microspheres
Send us your grade, particle size, quantity and application. We will review availability, quotation and lead time. Small quantities, prototypes and custom made-to-order specifications are welcome.