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White Fused Alumina Macro

White fused alumina macro,also referred to as white fused alumina grain-size sand, are produced by refining high-quality alumina powder through the process of electromelting and meticulous sieving. These coarse grits are primarily utilized in various grinding applications, such as surface grinding, external and internal cylindrical grinding, and creep-feed grinding of low-alloy steel. They find wide-ranging industrial uses, including pressure blasting, microdermabrasion, polishing, creating anti-skid surfaces, and serving as refractory materials.

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Physical properties

Hardness:

9 mohs

Crystal Form：

Alpha - Alumina

Melting point:

 2250°C

True Density：

 3.95g/cm3

Color：

White

Bulk density:

depending on grain size

Typical chemical analysis

Al2O3:

99.63%

Fe2O3:

0.06%

SiO2:

0.09%

Na2O：

0.16%

Available grain sizes

(Average grain size)

FEPA Nr

Granulometry
in µm

F 012:

1400–2000µm

F 014: 

1180–1700µm

F 016:

 1000–1400µm

F 020:

850–1180µm

F 022:

710–1000µm

F 024:

 600–850µm

F 030: 

500–710µm

F 036:

425–600µm

F 040:

355–500µm

F 046:

300–425µm

F 054:

250–355µm

F 060: 

212–300µm

F 070:

180–250µm

F 080:

150–212µm

F 090: 

125–180µm

F 100:

106–150µm

F 120: 

90–125µm

F 150:

63–106µm

F 180: 

63–90µm

F 220:

53–75µm

Application areas (including but not limited to)

  • Metal processing

    Removes oxidation layers and contaminants from metal surfaces, improving the quality and precision of parts.

  • Ceramic manufacturing

    Used for precision polishing and refinement of ceramic products.

  • Glass processing

    Removes scratches and imperfections from glass surfaces, enhancing their texture and luster.

  • Automotive manufacturing and maintenance

    Removes oxidation layers and contaminants from automotive parts, enhancing their quality and appearance.

  • Electronics

    Removes oxide layers and contaminants from electronic component surfaces, improving their performance and reliability.

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