GP-800
Grey Ceramic Microspheres
Extra-coarse, ultra-high-strength alumino-silicate ceramic microspheres — the most robust grade in the GP Series — engineered for maximum volume build, density reduction, and structural reinforcement under extreme mechanical stress, high pressure, and high temperature.
GP-800 GREY CERAMIC MICROSPHERES
GP-800 Grey Ceramic Microspheres are extra-coarse, ultra-high-strength alumino-silicate ceramic microspheres engineered for applications operating under extreme mechanical stress, high pressure, and high temperature conditions. GP-800 represents the most robust grade within the GP Series, designed for maximum volume build, density reduction, and structural reinforcement in heavy-duty industrial systems.
The rigid ceramic shell and large spherical geometry allow GP-800 to deliver exceptional load-bearing capacity, dimensional stability, and pressure resistance, making it particularly suitable for oil & gas cementing, wellbore strengthening, industrial flooring, and thick-section composites.
With the largest particle size distribution in the GP Series — D50 of ~15 µm and D95 of ~50 µm — and the lowest true density (~2.2 g/cc), GP-800 is the premier choice for maximum volume extension, lightweight density reduction, and heavy structural applications where no other grade in the series can match its performance envelope.
GP-800
TECHNICAL PROPERTIES
The following typical values characterise GP-800 Grey Ceramic Microspheres under standard test conditions. As the largest and most robust grade in the GEOSPHERES™ GP Series, these parameters reflect GP-800's engineered performance for extreme industrial environments.
| Property | Typical Value |
|---|---|
| Chemical Composition | Alumino-Silicate Ceramic |
| Colour | Grey |
| Particle Morphology | Spherical |
| Structure | Rigid / Ultra-High Strength |
| True Density | ~2.2 g/cc |
| Particle Size (D50) | ~15 µm |
| Particle Size (D90) | ~35 µm |
| Particle Size (D95) | ~50 µm |
| Surface Area | ~3 m²/cc |
| Oil Absorption* | ~20 g / 100 g |
| Mohs Hardness | ~6 – 7 |
| Thermal Stability | >1,000°C |
| Form | Free-Flowing Powder |
| CAS No. | 93924-19-7 |
| EINECS No. | 300-212-6 |
APPLICATIONS OF GP-800
GP-800's extra-coarse particle size, ultra-high-strength ceramic shell, and lowest true density in the GP Series make it the definitive choice for heavy-duty applications where maximum volume build, extreme pressure resistance, and structural reinforcement are the primary requirements.
Oil & Gas — High-Pressure Cementing
High-pressure cementing and wellbore strengthening systems, lightweight cement slurries for deep and ultra-deep wells, and plugging and abandonment formulations.
Construction & Infrastructure
Heavy-duty repair mortars and grouts, load-bearing and structural fills, and industrial flooring and thick screeds.
High-Build Coatings & Protective Linings
High-build protective and corrosion-resistant coatings, and wear-resistant linings for tanks, pipelines, and equipment.
Composites & Polymer Systems
Thick-section thermoset composites, polymer-modified concrete systems, and moulded industrial and structural components.
Industrial Flooring & Heavy Screeds
Delivers exceptional wear resistance, compressive strength, and long-term durability in epoxy/PU industrial floors, thick-section screeds, and load-bearing toppings subject to extreme mechanical stress.
Foundry & Refractory Coatings
Improves thermal stability, erosion resistance, and surface integrity in refractory and foundry coatings exposed to extreme temperatures and molten metals.
Polymer-Modified Concrete & Overlays
Maximises load-bearing capacity and abrasion resistance in polymer-modified concrete, structural overlays, and heavy-duty industrial repair layers where extreme volume filling is needed.
Wear-Resistant Linings & Barriers
Incorporated into protective linings for chutes, hoppers, pipelines, and material-handling equipment operating under extreme abrasion, impact, and mechanical wear conditions.
KEY BENEFITS OF GP-800
Maximum Density Reduction with Structural Integrity
Enables lightweight formulations without compromising load-bearing performance — the lowest true density (~2.2 g/cc) in the GP Series.
Exceptional Compressive Strength
Designed to withstand extreme pressure and mechanical stress in demanding environments including deep-well cementing and heavy industrial systems.
Superior Volume Build & Gap Filling
Extra-coarse particles provide the most efficient thickness build and cavity filling of any GP Series grade — ideal for thick-section and high-build systems.
Outstanding Dimensional Stability
Minimises shrinkage, cracking, and deformation in thick and heavy sections — critical for structural fills, repair mortars, and load-bearing composites.
Thermal & Chemical Robustness
Stable at elevated temperatures above 1,000°C and resistant to aggressive chemicals, acids, alkalis, and hydrocarbons in oilfield and industrial environments.
Non-Combustible & Inert
Inorganic ceramic composition ensures long-term stability, fire safety, and zero chemical interaction with binders, resins, or curing agents.
Optimised Cost-to-Performance Ratio
Reduces reliance on heavier aggregates and mineral fillers while maintaining strength, enabling significant improvements in formulation economics at scale.
SAFETY, STORAGE & PACKAGING
GP-800 Grey Ceramic Microspheres are inorganic, non-toxic, and non-hazardous under normal industrial handling conditions. They are non-flammable, non-reactive, and do not emit hazardous fumes. Dust generation should be minimised during handling. Refer to the full Safety Data Sheet (SDS) for detailed occupational safety guidance.
Safety & PPE
- Non-flammable and non-reactive
- Does not emit hazardous fumes
- Minimise dust generation during handling
- Wear safety goggles during handling
- Use chemical-resistant gloves
- Use dust mask or respirator in dusty environments
- Refer to full SDS for detailed guidance
Storage Guidelines
- Store in a dry, cool, well-ventilated area
- Protect from moisture and humidity
- Keep bags tightly sealed after opening
- Avoid mechanical damage to packaging
- Proper storage ensures long-term performance consistency
Regulatory & Identification
- CAS No.: 93924-19-7
- EINECS No.: 300-212-6
- HS Code: 2621.90.0000
- UN / Transport: Not regulated as Dangerous Goods
- Form: Free-flowing powder
- Crystalline silica content: None
Packaging Options
- Standard: 25 kg HDPE-lined paper bags
- Optional: Jumbo / bulk bags on request
- Custom packaging available for large orders
- Export packing available
- Labelled per international requirements
GP-800
Technical and commercial questions about GP-800 answered by
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