Kuhmichel Abrasiv Ltd ALUMINIUM-OXIDE-GRIT-220-MESH-BROWN(25-KG-BAG)

Brown Fused Alumina

Overview

Brown Fused Alumina is a premium angular aluminium oxide abrasive manufactured by Kuhmichel Abrasives for blasting, grinding, surface preparation and refractory applications. Produced as an iron-free mineral abrasive, it combines high hardness with exceptional toughness, providing excellent durability and long service life during repeated blasting operations. Suitable for both pressure and vacuum blasting systems, it is widely used throughout aerospace, industrial manufacturing and maintenance environments where consistent surface finishing and material removal are required.

Key Technical Specs

• Product Type: Brown fused aluminium oxide abrasive
• Material: Brown fused alumina (Al?O?)
• Hardness: 9 Mohs
• Grain Shape: Angular
• Melting Point: Approximately 2,050°C
• Specific Gravity: 3.9-4.1 g/cm�
• Bulk Density: 1.5-2.1 g/cm� (depending on grain size)
• Aluminium Oxide (Al?O?): Up to 95.65%
• Iron Oxide (Fe?O?): Approximately 0.12%
• Titanium Dioxide (TiO?): Approximately 2.42%
• Silicon Dioxide (SiO?): Approximately 0.92%

Approvals & Specifications

• Rolls-Royce CSS12
• Airbus ABR 9-0160
• Pratt & Whitney PMC 3046
• Pratt & Whitney PMC 3052
• Pratt & Whitney PMC 3132
• EN ISO 11126-7
• EN 4637
• DIN ISO 8486-1
• MIL A-A-59316
• ANSI B74-12
• JIS R6001
• FEPA F Standard
• FEPA P Standard

Typical Applications

• Aerospace dry blasting
• Fine blasting media
• Surface preparation before coating
• Bonded grinding wheels
• Coated abrasives
• Loose abrasive applications
• Aggregate and filler materials
• Refractory products
• General industrial blasting

Key Features & Benefits

• High hardness provides excellent cutting performance.
• Exceptional toughness delivers long abrasive life.
• Angular grain shape promotes efficient material removal.
• Iron-free composition helps minimise contamination.
• Suitable for repeated recycling in blasting operations.
• Compatible with both pressure and vacuum blasting equipment.
• Available in a wide range of macro and micro grit sizes.
• Approved for major aerospace OEM specifications.

Application Guidelines

• Select the appropriate grit size based on the required surface finish and removal rate.
• Suitable for use in both pressure blast and vacuum blast systems.
• Inspect blasting media regularly and replace excessively broken particles.
• Adjust blasting pressure to suit the substrate and required surface profile.
• Follow OEM blasting specifications for aerospace maintenance applications.

Compatibility & Limitations

• Compatible with pressure and vacuum blasting systems.
• Suitable for aerospace, industrial and refractory applications.
• Not recommended where contamination from aluminium oxide is unacceptable.
• Performance varies according to grit size and blasting parameters.
• Validate media selection against aircraft maintenance specifications before use.

Packaging & Procurement

• 25 kg bags on 1-ton pallets
• 1-ton bulk bags (Big Bags)
• Available in FEPA Macro grades F008-F220
• Available in FEPA Micro grades F230-F1200
• Metric grain sizes from 0.06 mm to 3.00 mm available

Why This Product is Chosen for AOG / MRO

• Provides consistent surface preparation for aerospace maintenance.
• High durability reduces abrasive consumption and operating costs.
• Wide range of approved grit sizes supports multiple maintenance tasks.
• Compatible with standard aerospace blasting equipment.
• Meets major aerospace OEM abrasive specifications.

Practical Suggestions for Your Team (AOG Mindset)

• Select finer grades for delicate aircraft components and heavier grades for coating removal.
• Recycle media where permitted to maximise operating efficiency.
• Monitor media condition to maintain consistent surface finish quality.
• Use appropriate PPE and dust extraction during blasting operations.
• Verify OEM approval before blasting critical aerospace components.

Manufacturer / Aviation Spec Codes

• Product Name: Brown Fused Alumina
• Manufacturer: Kuhmichel Abrasives
• Product Type: Brown fused aluminium oxide abrasive
• Primary Aerospace Approvals: Rolls-Royce CSS12, Airbus ABR 9-0160, Pratt & Whitney PMC 3046 / 3052 / 3132
• Standards: FEPA F & P, EN ISO 11126-7, MIL A-A-59316