Brown Fused Alumina Micro Powder F220–F2000

Category：

Products

Brown Fused Alumina

key word：

brown fused alumina micro powder

Description

FEPA F220–F2000 · Al₂O₃ ≥ 95% · Laser PSD Report on Every Batch High-purity brown fused alumina micro powder for precision polishing, lapping, abrasive blasting, and refractories. Water-classified fine grades with D50 controlled within ±0.5 μm. COA and laser particle size report supplied with every shipment.

Message

Product Detail
Application
Package
Company
Our Service

Brown Fused Alumina Micro Powder

Specifications

Property	Typical Value
Al₂O₃	≥ 95.0%
TiO₂	1.5–3.0%
SiO₂	≤ 1.5%
Fe₂O₃	≤ 0.30%
Magnetic content	≤ 0.05%
Mohs hardness	9.0
Specific gravity	3.95 g/cm³
Bulk density (F360)	1.65–1.85 g/cm³
Grit sizes	F220–F2000 (FEPA 42-1)
Classification	Air & water classification

Actual measured values are reported on the COA supplied with each batch. Contact us for the latest batch data.

Available Grit Sizes

All grades below are in stock. Custom D50 specifications available on request.

F220 · F230 · F240 · F280 · F320 · F360 · F400 · F500 · F600 · F800 · F1000 · F1200 · F1500 · F2000

Compliant with FEPA 42-1. F230 D50 ≈ 53 ± 3.0 μm; F2000 is the finest standard micro powder grade.

Applications

Precision Polishing

For mirror finishing of stainless steel, optical glass, and precision components. The angular grain shape delivers consistent cutting action; fine grades F800–F2000 reduce surface roughness effectively.

Lapping & Grinding

Used as the abrasive phase in lapping compounds and slurries for bearings, hydraulic parts, and semiconductor substrates. Tight particle size distribution prevents deep scratches from oversize particles.

Abrasive Blasting

For mold cleaning, deburring, and surface roughening. Micro powder grades produce a uniform matte finish on precision castings and medical instruments.

Refractories

Added as fine powder in monolithic refractories to increase density and wear resistance of castables. High Al₂O₃ content and low impurity levels support high-temperature volume stability.

Quality Assurance

Laser Particle Size Analysis Per Batch
Every batch is tested on a laser particle size analyzer for D50, D90, and distribution width. Data is supplied with the shipment.

COA With Every Shipment
Each delivery includes a Certificate of Analysis covering chemical values (Al₂O₃, Fe₂O₃, SiO₂, TiO₂) and physical values (grit size, magnetic content).

Water Classification Precision
Fine grades are water-classified, allowing D50 control within ±0.5 μm — suitable for polishing and lapping applications with strict PSD requirements.

FAQ

Q1: What is your MOQ for brown fused alumina micro powder?
A: Our standard MOQ is 1 metric ton; trial orders of 500 kg are accepted for new customers.

Q2: Do you provide free samples?
A: Yes, we provide 1–5 kg free samples with a laser PSD report; courier cost is borne by the buyer.

Q3: What is the lead time?
A: Standard grades ship within 7–10 days; custom D50 specifications take 15–20 days.

Q4: What packaging options are available?
A: 25 kg kraft paper bags with inner PE liner, or 1,000 kg jumbo bags; palletized and shrink-wrapped for export.

Q5: Can you produce a custom particle size distribution?
A: Yes, water classification allows us to control D50 within ±0.5 μm for fine grades.

Q6: Is the Al₂O₃ content of micro powder different from coarse grit?
A: Yes. Micro powder grades undergo additional acid washing and classification, which typically results in a slightly higher Al₂O₃ content (≥95%) compared to standard coarse grit. We report the actual measured value on each COA.