White Fused Alumina for Sandblasting: Grain Size Selection Guide (Buyer Perspective)
When sourcing abrasives for sandblasting, grain size selection is often underestimated. For buyers and engineers working in surface treatment, choosing the right White fused alumina grit can significantly impact blasting efficiency, surface quality, and overall cost control.
White fused alumina is a high-purity form of alumina, produced by fusing refined alumina in an electric arc furnace. Its low impurity level and sharp, friable grain structure make it especially suitable for sandblasting applications that require clean surfaces, such as stainless steel, aluminum alloys, and precision components.
From a procurement perspective, grain size should always be selected based on the end application:
Coarse grits (F16–F36) are typically used for heavy rust removal, scale cleaning, or thick coating removal. They offer aggressive cutting but result in a rougher surface profile.
Medium grits (F46–F80) are the most commonly purchased sizes for general-purpose sandblasting, balancing efficiency and surface finish.
Fine grits (F100–F220) are preferred for light surface texturing, decorative finishes, or blasting thin and sensitive materials.
Beyond grit size, buyers should also evaluate grain consistency and classification accuracy, as inconsistent sizing can lead to uneven blasting results and higher abrasive consumption. This is where choosing a reliable Alumina Supplier or Manufacturer of white fused alumina becomes critical.
Experienced manufacturers usually offer:
Stable Al₂O₃ purity levels
Strict particle size control
Custom grit options
Technical documentation and export compliance
Many procurement teams reference industry-focused manufacturers such as white fused alumina suppliers when comparing specifications and sourcing options.
In summary, selecting the correct grain size of white fused alumina is not just a technical decision—it’s also a purchasing strategy. Matching application requirements with the right supplier can improve blasting performance, reduce waste, and ensure long-term supply stability.