Product

Hollow Glass Microspheres (HGM)

Series: Common, High-Strength, Bright WhiteModel range: AM-H15 – AM-H60

Key Properties

Density (tap)	0.10 – 0.36 g/cm³
Density (true)	0.15 – 0.60 g/cm³
Compressive strength	500 – 18,000 psi (3.4 – 124 MPa)
Particle size (D50)	28 – 57 μm
Thermal conductivity	0.040 – 0.093 W/(m·K) @293K
Filling rate	60% – 70%

Density (tap)

0.10 – 0.36 g/cm³

Density (true)

0.15 – 0.60 g/cm³

Compressive strength

500 – 18,000 psi (3.4 – 124 MPa)

Particle size (D50)

28 – 57 μm

Thermal conductivity

0.040 – 0.093 W/(m·K) @293K

Filling rate

60% – 70%

Product Series

Each series links to its dedicated product page. Select a series for detailed specifications.

Series	Models	Positioning	Details
Common	AM-H15 to AM-H60 (8 grades)	General-purpose grades across a range of densities and compressive strengths, for standard filling and lightweighting applications	View Details
High-Strength	AM-H25HS to AM-H60HS (5 grades)	Higher compressive strength at equivalent particle size, for demanding pressure environments (deep-sea, oilfield cementing)	View Details
Bright White	AM-H25M to AM-H38M (3 grades)	Enhanced whiteness and low iron content for appearance-critical plastics, coatings, and masterbatches	View Details

CommonView Details

AM-H15 to AM-H60 (8 grades)

General-purpose grades across a range of densities and compressive strengths, for standard filling and lightweighting applications

High-StrengthView Details

AM-H25HS to AM-H60HS (5 grades)

Higher compressive strength at equivalent particle size, for demanding pressure environments (deep-sea, oilfield cementing)

Bright WhiteView Details

AM-H25M to AM-H38M (3 grades)

Enhanced whiteness and low iron content for appearance-critical plastics, coatings, and masterbatches

Hollow glass microspheres are an inorganic, non-metallic, thin-walled spherical powder material — near-ideal in particle geometry, composed primarily of alkali/alkaline-earth borosilicate glass. Their combination of low density, high compressive strength, low thermal conductivity, and chemical stability makes them a key functional filler across advanced composite materials, from aerospace components to deep-sea buoyancy systems.

Beyond low density and high pressure resistance, hollow glass microspheres offer low thermal conductivity, high dispersion, low dielectric loss, self-lubrication, sound and heat insulation, and strong chemical stability — properties that let formulators reduce weight and cost while improving performance in composite systems.

Documentation

Certificate of Analysis (CoA) with every shipment
Detailed per-model datasheets (density, particle size, crush strength) on request
MSDS / TDS available on request

Key Applications

Hollow glass microspheres across six industrial application areas.

Electronics

Low dielectric constant and light weight suit electronic product housings, circuit boards, and related components.

Building Materials

Reduces weight in synthetic marble and wood composites while improving crack resistance and structural performance; enhances thermal and sound insulation in coatings.

Aerospace and aviation applications of hollow glass microspheres

Aerospace & Aviation

Filled into non-metallic aircraft materials to reduce structural weight, cut fuel consumption, and provide insulation and electromagnetic shielding.

Transportation

Used in vehicle shells, structural parts, and interior components for lightweighting, strength, and processability, improving energy efficiency.

Paints and adhesive tapes applications of hollow glass microspheres

Paints & Adhesive Tapes

Reduces raw material consumption while improving insulation, chemical resistance, and shrinkage/elasticity performance of coatings.

Marine and mining applications of hollow glass microspheres

Marine & Mining

As a drilling fluid additive, lowers fluid density and friction, lowers drill bit wear, and improves stability. Also used in buoyancy materials for underwater equipment and as a sensitizing agent.

Frequently Asked Questions

What determines which HGM series to use?

Series selection depends on your target density, required compressive strength (related to your application's pressure environment), and whether appearance/whiteness matters. The High-Strength series is typically chosen for high-pressure environments like deep-sea equipment or oilfield cementing; the Common series suits general lightweighting and filling applications; the Bright White series is chosen when product appearance is a formulation priority.

Are hollow glass microspheres chemically stable?

Yes. They offer strong chemical stability alongside low thermal conductivity, high dispersion, and self-lubricating properties, making them suitable for demanding composite formulations.

Do you provide particle size distribution data for each grade?

Yes, D10/D50/D90 particle size data along with tap density, true density, compressive strength, and thermal conductivity specifications are available for each model.