Aluminium powder is widely used across coatings, inks, plastics, construction, and chemical applications.
However, many buyers only look at brightness or price—but classification determines real performance.
This guide explains the main types of aluminium powder, how they differ, and how to choose the right grade for your production needs.

As ZHANGQIU METALLIC PIGMENT CO., LTD, we’ve supplied metallic pigments to 70+ countries and analyze over 1,500 batches annually, giving us a deep understanding of the industry.

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Understanding Aluminium Powder: The Core Concept

Aluminium powder is produced by atomizing or ball-milling aluminum into fine flakes or particles.
Its classification affects stability, brightness, reaction behavior, and suitability for paint or industrial systems.

The three fundamental classification dimensions include:

• Oil-based vs. water-based compatibility

• Floating vs. non-floating behavior

• Coated vs. uncoated surface treatment

Global market data shows that over 82% of Asia-Pacific aluminium powder used in coatings is non-floating and uncoated (APAC Coatings Statistics 2024).

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Oil-Based vs. Water-Based Aluminium Powder

1. Oil-Based Aluminium Powder

Most aluminium powders in coatings are oil-based, dispersed in solvents such as mineral spirits.

Features:

• Strong metallic brilliance

• Stable in solvent systems

• Excellent for automotive & industrial coatings

Best for:
Paints, inks, metallic coatings

2. Water-Based Aluminium Powder

Water-based aluminium powder undergoes special passivation to prevent reaction with moisture.

Features:

• Safe in waterborne systems

• Lower hydrogen-release risk

• Eco-compliant for modern coatings

Applications:
Water-based paints, textile printing, environmental coatings

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Floating vs. Non-Floating Aluminium Powder

1. Floating Aluminium Powder

Particles float to the surface after film formation, creating a mirror-like surface.

Typical uses:

• Hammer paints

• Chrome-like finishes

• Heat-resistant coatings

2. Non-Floating Aluminium Powder

This is the most widely used type, covering 70%+ of industrial demand.

Features:

• Even distribution in the coating

• Stable metallic effect

• Better hiding power

Uses:
Plastic coatings, automotive trim, inks, powder coatings

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Coated vs. Uncoated Aluminium Powder

1. Resin-Coated Aluminium Powder (Resin-Coated / Silane-Coated)

A resin or silica layer protects the powder from oxidation and moisture.

Advantages:

• High storage stability

• Reduced gas generation

• Better dispersion

• Compatible with more systems

Industry data:
Resin-coated types reduce hydrogen formation by up to 95% (Coating Research Institute 2023).

2. Uncoated Aluminium Powder

The traditional and most commonly used form.

Features:

• Strong metallic shine

• Stable in solvent systems

• Cost-effective

Limitations:

• Reacts with water

• Requires controlled environment

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Applications and Comparison

Below is a practical comparison table for buyers and formulators:

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Frequently Asked Questions (FAQ)

1. Why do different aluminium powder types matter?

Each type behaves differently in coatings—affecting stability, brightness, gas-release safety, and compatibility.

2. Is coated aluminium powder always better?

Not always. It is safer and more stable, but uncoated grades still dominate traditional solvent systems.

3. Can I use water-based aluminium powder in solvent coatings?

Yes, but it is unnecessary and less cost-effective. Match type with your formulation.

4. What determines aluminium powder price?

Purity, coating treatment, particle size distribution, and metallic effect quality.

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Conclusion: Choose the Right Aluminium Powder for Performance and Safety

Understanding aluminium powder classification allows formulators to avoid gas-release risks, improve metallic effects, and enhance product stability.
Whether you need non-floating, resin-coated, or water-compatible grades, our expert team at ZHANGQIU METALLIC PIGMENT CO., LTD can recommend the best solution based on your system and budget.

Contact experts directly: info@zqmetallic.com
Visit us: https://zqmetallic.com/