Spherical White Fused Alumina: Should You Call It Powder or Granules?

Understanding the Difference

Spherical White Fused Alumina (WFA) is widely used in industries such as 3D printing, aerospace, precision polishing, and thermal coatings. However, a common question arises: Should it be classified as powder or granules? This distinction is important for manufacturers, suppliers, and buyers looking for the right material for their applications.

What is Spherical White Fused Alumina?

Spherical White Fused Alumina is a high-purity aluminum oxide (Al₂O₃) material with a uniform spherical shape. Unlike standard fused alumina, which has irregular particles, this variant offers:

• Enhanced flowability for improved process efficiency
• High thermal and chemical resistance
• Uniform particle distribution, ideal for high-tech applications

Powder vs. Granules: Which One Suits Your Needs?

1. Powder – Ultra-Fine for Precision Applications

When labeled as "powder," Spherical WFA typically refers to micron-sized particles used in:

• Polishing and lapping of semiconductor wafers
• Electronic ceramics and insulating layers
• Thermal spray coatings for aerospace applications

Example Product Title:
Spherical White Fused Alumina Micropowder | Ultra-Fine for Thermal Spraying

2. Granules – Optimized for High-Flow Applications

For applications requiring larger particle sizes (above 50μm), "granules" is the preferred term. These are commonly used in:

• 3D printing powders with high flowability
• Thermal barrier coatings for aerospace and industrial use
• Refractory materials requiring controlled particle size distribution

Example Product Title:
Spherical White Fused Alumina Granules | High Flowability for Additive Manufacturing

Which One Should You Choose?