Pink fused alumina is also called pink aluminium oxide.
Pink fused alumina (PA) is produced by bayer alumina and right quantity oxidized chromium in an electric arc furnace at high temperatures. Compared with white aluminium oxide, the product shows similar hardness and lower toughness. The abrasive tools which made of PA have excellent durability and high processing cleanness. The materials are used to grind measuring and cutting tools, instruments, threading workpieces, etc. which demand low roughness on the surface.
| Physical Characteristics | |||||
| Item | Basic mineral | Crystal system | Crystal color | Mohs hardness | Density |
| Pink fused alumina | Hexagonal | Pink | 9 | ≥3.90g/cm3 | |
| Item | Micro hardness | Electrical resistivity | Grinding ability (compared with diamond as one) | Linear expansion coefficient (when 900℃ α•10-6k-1) | |
| Pink fused alumina | HV2200-2300 | 1014-1016Ω•cm | 0.12 | 8.3 | |
| Chemical Composition | |||||||||
| Grit | Low chromium | Medium chromium | High chromium | ||||||
| Al2O3 | Cr2O3 | Na2O | Al2O3 | Cr2O3 | Na2O | Al2O3 | Cr2O3 | Na2O | |
| F12-F80 | ≥98.50 | 0.20-0.45 | ≤0.50 | ≥98.20 | 0.45-1.00 | ≤0.55 | ≥97.40 | 1.00-2.00 | ≤0.50 |
| F90-F150 | ≥98.50 | ≤0.55 | ≥98.20 | ≤0.60 | ≥97.00 | ≤0.60 | |||
| F180-F220 | ≥98.00 | ≤0.60 | ≥97.80 | ≤0.70 | ≥96.50 | ≤0.70 | |||
| Note: Special requirement on chemical composition can be satisfied through discussion. | |||||||||
| Optional Particle Sizes | |
| Product Category | Particle Size |
| PA - low chromium | F12-F220, F240-F2000, P12-P220, JIS240#-10000# etc. |
| PA - medium chromium | F12-F220, F240-F2000, P12-P220, JIS240#-10000# etc. |
| PA - high chromium | F12-F220, etc. |
| Note: Special specification can be customized according to customer's requirements. | |
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