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Product comparison

White Fused Alumina — Low-Sodium | High-Purity | Standard

Structured comparison for procurement, technical validation and product selection. Choose by Na₂O / Fe₂O₃ thresholds, particle system (F / P / Micron) and intended bond system.

Key selector
Low-Na for polishing & plating — High-Purity for clean-cut abrasive — Standard for blasting & refractories

Low-Sodium WFA (Low-Na)

Na₂O ≤ 0.10% • Al₂O₃ ≥ 99.3% • Target: precision polishing
  • Primary value: minimal glass phase → stronger crystal boundaries
  • Best for electroplated tools, optical polishing, high-speed grinding
  • Lower powdering, higher wheel life, stable high-temp performance

High-Purity WFA (HP)

Na₂O ≤ 0.25% • Al₂O₃ ≥ 99.4% • Target: high-clean abrasive
  • Primary value: ultra-low contaminants (Fe, Ti)
  • Preferred for coated & vitrified wheels, mid-to-high end polishing
  • Balanced between cutting-aggressiveness and surface finish

Standard WFA

Na₂O ≤ 0.45% • Al₂O₃ 98.6–99.2% • Target: general industrial use
  • Primary value: cost-efficiency for sandblasting, refractories
  • Suitable for conventional grinding wheels, non-critical polishing
  • Broad availability and best price performance for volume buyers
Feature Low-Sodium WFA High-Purity WFA Standard WFA
Typical Al₂O₃ ≥ 99.3% ≥ 99.4–99.5% 98.6–99.2%
Na₂O ≤0.10% ≤0.25% ≤0.45%
Fe₂O₃ ≤0.05% (opt ≤0.03%) ≤0.04–0.05% ≤0.10%
Glass phase Minimal Low Higher
Particle systems F / P / Micron F / P / Micron F / P / Fines
Typical applications Optics, plating, precision polishing Coated & bonded abrasives, ceramics Sandblasting, refractory, general grinding
Performance highlights Highest thermal stability & lowest powdering High cleanliness & consistent cutting Cost-effective, general performance
Commercial positioning Premium (+15–25% vs std) Mid-premium (+10–15% vs std) Budget / volume
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Notes: Typical values shown. Final specifications supplied on COA. Custom tolerances (Na₂O, Fe₂O₃, D50) available on request. For micron-grade powders we recommend specifying D10/D50/D90 and maximum oversize.

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About XINLI

XINLI is a leading manufacturer of industrial abrasives, specializing in fused alumina, silicon carbide, and advanced polishing powders. With over 25 years of industry experience and a global client base, we are committed to delivering materials that meet the highest quality and precision standards.

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