Audited Supplier
Natural Corundum
Corundum Abrasives
Metal Parts
Surface Finish
Artificial Abrasives
Abrasive
Conventional Abrasive
Hexzagon
White
1.75-1.95
9
8-5 5-3 3-1 1-0
-80,-120,-240,-320
Fuda
Ton Bag
8-5 5-3 3-1 1-0
China
2818109000
Product Description
The use of brown corundum powder
Making grinding tools: can be used as consolidation and coating grinding tools, such as for manufacturing abrasive paper, grinding wheel and other abrasive materials and grinding tools, processing and surface treatment of various materials
Grinding and polishing: used for grinding and polishing of metal, ceramics, glass and other materials to obtain a smooth, flat surface
Anti-skid materials: can be added to the floor, stairs and other anti-slip materials to enhance its anti-skid performance
Ceramic materials: as an additive of ceramic materials, improve its hardness, wear resistance and high temperature stability
Refractory materials: used for the production of refractory materials, such as refractory bricks, refractory coatings, etc., to improve their fire resistance
Type Properties | Lower sodium I | Middle sodium II | |||||||
Fraction(mesh) | Fine(mesh) | Fraction(mesh) | Fine(mesh) | ||||||
Guarantee Value | Typical value | Guarantee Value | Typical value | Guarantee Value | Typical value | Guarantee Value | Typical value | ||
Chemical Composition (%) | α-Al2O3 | ≥99 | 99.3 | ≥98.5 | 99.23 | ≥99 | 99.14 | ≥98.5 | 98.75 |
SiO2 | ≤0.2 | 0.15 | ≤0.3 | 0.22 | ≤0.4 | 0.12 | ≤0.4 | 0.19 | |
Fe2O3 | ≤0.2 | 0.04 | ≤0.25 | 0.04 | ≤0.2 | 0.01 | ≤0.25 | 0.05 | |
Na2O | ≤0.15 | 0.12 | ≤0.25 | 0.18 | ≤0.4 | 0.35 | ≤0.5 | 0.23 | |
Principal crystalline phase | α-Al2O3 | ||||||||
Crystal system | Hexzagon | ||||||||
Colour | white | ||||||||
True density (g/cm3) | ≥3.95 | ||||||||
Packing density (g/cm3) | 1.75-1.95 | ||||||||
Mohs hardness | 9 | ||||||||
Linear expansion (1/°C) | 8.3×10-4 | ||||||||
Size(mm) | 8-5 5-3 3-1 1-0 | ||||||||
Fine(mesh) | -80,-120,-240,-320 | ||||||||
Micropowder(um) | 3-5 5-10 | ||||||||
Test standard | GB/T3044-89 | ||||||||
Packing | 25kg/bag 1000kg/big bag | ||||||||
Usage | Refractories | ||||||||
