White Fused Alumina (WFA)

White Fused Alumina (WFA) is produced by melting high-purity alumina powder in an electric arc furnace and rapidly cooling it to form a dense crystalline structure. It features extremely high purity, excellent hardness and outstanding thermal resistance.

Due to its very low iron content, White Fused Alumina is ideal for applications requiring clean surface finishing, non-ferrous blasting and high-performance refractory materials.

white fused alumina of Manufacturer China

Technical Specifications

Application	Size Range	Al₂O₃ (%)	Na₂O (%)	Fe₂O₃ (%)	SiO₂ (%)
Abrasives / Grinding Tools	F6# – F80#	≥99.3	≤0.40	≤0.05	≤0.05
Abrasives / Grinding Tools	F90# – F150#	≥99.2	≤0.40	≤0.05	≤0.05
Fine Abrasives	F180# – F240#	≥99.0	≤0.40	≤0.10	≤0.10
Micro Powder	W3.5# – W63#	≥99.0	≤0.50	≤0.10	≤0.10
Refractory Materials	0–1 / 1–3 / 3–5 / 5–8 mm	≥99.2	≤0.45	≤0.10	≤0.05

Physical Properties

Property	Value
Crystal Form	Hexagonal
True Density	3.90 g/cm³
Bulk Density	1.53 – 1.99 g/cm³
Mohs Hardness	9.0
Melting Point	2250°C
Max Service Temperature	1900°C

Product Advantages

Extremely low Fe₂O₃ content — suitable for non-ferrous blasting
High hardness and strong cutting ability
Excellent thermal and chemical stability
Does not affect the color of processed parts
Micro-powder grades ideal for wet blasting and lapping

Packaging

Standard: 25 kg double-layer bags (inner plastic, outer woven)
Optional: 1,000 kg jumbo bags or customized packaging upon request