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JIS Standard White Fused Alumina for Coated Cloth Abrasives White Fused Alumina Wfa


  • AlO3: 99.5%
  • TiO2: 0.0995%
  • SiO2 (not free): 0.05%
  • Fe2: 0.08%
  • MgO: 0.02%
  • Alkali (Soda & Potash): 0.30%
  • Crystal Form: Rhombohedral Class
  • Chemical Nature: Amphoteric
  • Specific Gravity: 3.95 grm/cc
  • Bulk Density: 116 lbs/ ft3
  • Hardness: KNOPPS = 2000, MOHS = 9
  • Melting Point: 2,000°C
  • Product Detail

    APPLICATION

    White Fused Alumina Introduction

    White fused alumina (WFA) is a synthetic abrasive material produced by fusing high-purity alumina in an electric arc furnace at high temperatures. It has a crystal structure primarily composed of corundum (Al2O3) and is known for its exceptional hardness, strength, and high purity. White fused alumina is available in different forms, including grits, sand, and powder, and is used in a variety of applications: Grinding and Polishing, Surface Preparation, Refractories, Precision Casting, Abrasive Blasting, Superabrasives, Ceramics and Tiles, and etc.

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    Chemical Position Standards:
    Code and Size Range

     
                                                       Chemical Composition%
    AI2O3
    SiO2
    Fe2O3
     Na2O
    F90-F150
    ≥99.50
    ≤0.10
    ≤0.05
    ≤0.30
    F180-F220
    ≥99.50
    ≤0.10
    ≤0.05
    ≤0.30
    #240-#3000
    ≥99.50
    ≤0.10
    ≤0.05
    ≤0.30
    #4000-#12500
    ≥99.50
    ≤0.10
    ≤0.05
    ≤0.30
    Physics Properties:
    Color
    White
    Crystal form
    Triangal crystal system
    Mohs hardness
    9.0-9.5
    Micro hardness
    2000-2200 kg/mm²
    Melting point
    2250
    Maximum operating temperature
    1900
    True density
    3.90 g/cm³
    Bulk density
    1.5-1.99 g/cm³

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    1. Grinding and Polishing: abrasive wheels, belts, and discs for precision grinding of metals, ceramics, and composites. 

    2. Surface Preparation: removing scale, rust, paint, and other surface contaminants from metal substrates

    3. Refractories: firebricks, refractory castables, and other shaped or unshaped refractory products

    4. Precision Casting: high-dimensional accuracy, smooth surfaces, and improved casting quality.

    5. Abrasive Blasting: remove rust, paint, scale, and other contaminants from surfaces without causing damage.

    6. Superabrasives:  high-speed steels, tool steels, and ceramics

    7. Ceramics and Tiles

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