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Pink Fused Alumina (PA)

Pink fused alumina is also called pink aluminium oxide.

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Description

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.  

Model

Physical Characteristics
ItemBasic mineralCrystal systemCrystal colorMohs hardnessDensity
Pink fused aluminaHexagonalPink9≥3.90g/cm3
ItemMicro hardnessElectrical resistivityGrinding ability (compared with diamond as one)Linear expansion coefficient (when 900℃ α•10-6k-1)
Pink fused aluminaHV2200-23001014-1016Ω•cm0.128.3
Chemical Composition
GritLow chromiumMedium chromiumHigh chromium
Al2O3Cr2O3Na2OAl2O3Cr2O3Na2OAl2O3Cr2O3Na2O
F12-F80≥98.500.20-0.45≤0.50≥98.200.45-1.00≤0.55≥97.401.00-2.00≤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 CategoryParticle Size
PA - low chromiumF12-F220, F240-F2000, P12-P220, JIS240#-10000# etc.
PA - medium chromiumF12-F220, F240-F2000, P12-P220, JIS240#-10000# etc.
PA - high chromiumF12-F220, etc.
Note: Special specification can be customized according to customer's requirements.

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