Views: 0 Author: Site Editor Publish Time: 2025-11-29 Origin: Site
Although both products belong to the family of water-based aluminium pigments, their processing, surface treatment, and chemical stability levels differ dramatically.
According to ISO 12944 corrosion protection standards and ASTM D3359 adhesion performance data, surface treatment directly affects pigment stability, hydrogen generation, and coating durability in water-based systems.
This is the foundation of the granule–paste distinction.
Water-based aluminium granule is produced through physical granulation and controlled encapsulation.
High mechanical stability
Granules maintain integrity under high-shear dispersion.
Low hydrogen generation
Reduced reactivity due to controlled physical barriers.
Easy handling
Dust-free and safer compared to traditional powders.
Stable in harsh mixing conditions
More resistant to oxidation during storage
Suitable for cost-sensitive formulations without complex additives
Industrial metal coatings
Anti-corrosion primers
Waterborne inks and printing systems
This pigment goes through a chemical passivation process to enhance protection.
Excellent chemical stability
Passivated layers stop direct contact with water, reducing corrosion.
High brightness and metallic effect
Ideal for premium coatings that demand visual impact.
Regulatory-compliant
Widely used in markets applying EU REACH and VOC restrictions.
Superior long-term storage stability
Better resistance to gas formation than untreated aluminum
More consistent performance in high-humidity environments
Automotive basecoats
High-end consumer electronics coatings
Waterborne decorative paints
Below is a simplified comparison based on common industry benchmarks and field data from major coating standards and material test reports.
| Property / Feature | Water-Based Aluminium Granule | Water-Based Passivation Aluminium Paste |
|---|---|---|
| Water Stability | Medium (physical protection) | High (chemical passivation) |
| Hydrogen Generation | Low–medium | Very low |
| Metallic Effect | Moderate–high | High–premium |
| Shear Resistance | Very high | Medium |
| Cost Level | Lower | Higher |
| Typical Use | Industrial coatings | Automotive & premium coatings |
According to global market surveys (e.g., Allied Market Research, Coatings World Data 2023), passivated aluminium pigments dominate high-performance waterborne coatings, while granules are rising rapidly due to their balance of cost and stability.
You need strong mechanical stability
Your process involves high-speed dispersion
Cost efficiency is a priority
Slightly lower metallic brightness is acceptable
You require maximum water resistance and zero reactivity
Your market demands premium metallic effects
You work in automotive, electronics, or luxury goods
Long-term storage stability is essential
Based on field tests conducted by multiple coating laboratories worldwide, passivation improves corrosion resistance by up to 65% compared with untreated aluminium pigments—making the paste the safer choice for high-end formulations.
Not entirely. Granule excels in mechanical durability, but passivation paste offers superior chemical stability.
Passivation aluminium paste generally provides higher brightness and leafing control.
Passivation aluminium paste is safer, as chemical treatment significantly suppresses hydrogen release.
Yes. Granule is typically more cost-effective, while passivation paste sits at a premium level due to its advanced chemical treatment.
Selecting between Water-based Aluminium Granule and Water-based Passivation Aluminium Paste depends on your system requirements, performance targets, and environmental constraints.
For technical support, product selection guidance, or customized aluminium pigment solutions, contact:
Silver Rocket Metallic Pigment Co., Ltd.
Website: https://www.silverocket.com/
Email: info@silverocket.com