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Portalum® A 25
- CASE Ingredients Features
- Abrasion ResistanceChemical ResistanceHigh Durability
- Chemical Name
- Bauxite, Bauxite Calcined
- Chemical Family
- Bauxites
Portalum® A 25 is produced from refractory agglomerated super calcined (RASC) bauxite. The main constituent is the mineral corundum. The standardized quality of Portalum® A 25 is guaranteed by means of an ISO 9001-certified quality management plan. Raw materials and production are closely monitored to ensure consistency in chemical composition and grain size.
Properties
- Physical Form
- Powder
Identification
- CASE Ingredients Functions
- Filler
Product families
Applications
Paints & Coatings — Automotive & Transportation
- Marine Coatings
Industrial — Chemical & Industrial Manufacturing
- Ceramics & Refractory
- Chemical Manufacturing
Automotive & Transportation — Coatings & Finishes
- Marine Coatings
Paints & Coatings — Industrial Coatings
- Industrial Coatings
Automotive & Transportation — Transportation
- Marine
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
Industrial Additives & Materials — Processing Aids
- Glass & Ceramic Additives
Other characteristics
- Brand
- Portalum
- End Uses
- Ceramics, Welding Products
- Features
- Abrasion Resistance, Chemical Resistance, High Durability, High Inertness, High Mohs Hardness
- Excellent abrasion resistance
- due to its hardness of 8.5 on Mohs scale, calcined bauxite will increase the coating's resistance to wear.
- Chemical resistance
- due to its inert nature, calcined bauxite will provide good chemical resistance compared to conventional fillers.
- Functions
- Filler
- Particle Size
- 10.0 microns
- Markets
- Automotive & Transportation
- Industrial
- Paints & Coatings
- Technology
- CASE Ingredients
- Industrial Additives & Materials
- Applicable Processes
- Flame Retardant Production
- Country Availability
- Canada
- USA
- Industrial Additives End Use
- Ceramics
- Welding Products
- Industrial Additives Features
- High Inertness
- High Mohs Hardness
Technical data
Table 1 of 3
6 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Moisture Content (at 105°C) | 0.1 | % | Halogen moisture analyser |
| Oil Absorption | 13.0 | g/100g | ISO 787/5 |
| Hardness | 8.5 | — | Mohs’ scale |
| Density | 3.8 | g/cm³ | He-pyknometer |
| Loose Apparent Density | 1.1 | g/cm³ | ISO 787/11 |
| Tapped Apparent density | 1.8 | g/cm³ | ISO 787/11 |
Table 2 of 3
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Percentage Passing on Individual Sieve (25 μm) | 3.0 | % | Alpine air jet |
| Particle Size (D50) | 10.0 | μm | Laser diffraction Sympatec |
| Particle Size (D97) | 41.0 | μm | Laser diffraction Sympatec |
Table 3 of 3
10 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Aluminum Oxide (Al₂O₃) | 88.0 | wt% | XRF |
| Silicon Dioxide | 6.5 | wt% | XRF |
| Ferric Oxide (Fe₂O₃) | 1.8 | wt% | XRF |
| Titanium Dioxide | 2.9 | wt% | XRF |
| Sodium Oxide (Na₂O) | 0.0 | wt% | XRF |
| Potassium Oxide (K₂O) | 0.0 | wt% | XRF |
| Magnesium Oxide (MgO) | 0.0 | wt% | XRF |
| Calcium Oxide (CaO) | 0.0 | wt% | XRF |
| Phosphorus PentOxide | 0.07 | wt% | XRF |
| Loss on Ignition (1000°C, 1 hour) | 0.1 | wt% | XRF |
