Black Aluminum Oxide General

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Description

GNPGraystar’s Black Aluminum Oxide is produced by fusing bauxite, iron oxide, and other elements in an arc-furnace. The resulting product has a moderate hardness, high toughness, high temperature resistance, good thermal stability, and excellent self-sharpening.

Diese Materialdaten wurden von GNPGraystar Specialty Materials zur Verfügung gestellt

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Ashby charts

Eigenschaften

Allgemein

PropertyValue

True particle density

3.5 g/cm³

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Mechanisch

PropertyValueComment

Härte, Knoop, HK2

2000 [-]

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Knoop (100)

2200 [-]

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Knoop (100)

Härte, Mohs

8.0 - 9.0 [-]

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Thermisch

PropertyValue

Schmelzpunkt

2050.0 °C

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Chemical properties

PropertyValueComment

Aluminium

62 %

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min. Al₂O₃

Eisen

6.0 - 12.0 %

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Fe₂O₃

Silizium

25

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max. SiO₂

Titan

2.0 - 4.0 %

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TiO₂

Technological properties

Property
Application areas

GNPGraystar’s Black Aluminum Oxide, due to its thermal stability and low heat generation when polishing, is used to polish metal pieces, especially stainless steel, producing a high smooth finish with little surface discoloration. It is also used in resin bonded abrasives, blasting applications, as anti-skid surfacing material, abrasive belts, flap wheels, fiber wheels, and other polishing & lapping applications.

Color

Black

Crystal structure

Trigonal System

Other

General Black Aluminum Oxide Sizing:

3-5 mm, 1-3 mm, 0.4-1.0 mm, 0-1 mm

F12-F400 Grit (FEPA F: 42-2:2006)

Other Sizes are Available Upon Request