Brown Aluminum Oxide Macrogrits

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Description

GNPGraystar’s Brown Aluminum Oxide is fused in an electric arc furnace and produces a high strength, tough, and extremely durable grain. GNPGraystar’s brown aluminum oxide is a medium to high density product which is available in standard grades or can be custom graded for your application.

This material data has been provided by GNPGraystar Specialty Materials.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyValue

True particle density

3.95 g/cm³

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Mechanical

PropertyValueComment

Hardness, Knoop, HK2

2050 [-]

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Knoop (100)

Hardness, Mohs

9.0 [-]

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Thermal

PropertyValue

Melting point

2000.0 °C

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Chemical properties

PropertyValueComment

Aluminium

96.69 %

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Al₂O₃

Iron

0.1 %

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Fe₂O₃

Other

0.25

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Silicon

0.44 %

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SiO₂

Titanium

2.52

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TiO₂

Technological properties

Property
Application areas

GNPGraystar’s Brown Aluminum Oxide Macrogrits are used in all types of bonded and coated abrasive applications for ferrous and normal alloy steels. It is also used in a myriad of refractory and general industrial applications.


GNPGraystar’s Brown Aluminum Oxide Microgrits are used for precision lapping, micro-blasting, fine grit bonded and coated abrasives applications, thermal coatings, and polishing compounds.

Certifications

ANSI and FEPA

Agency & Mil-Specs (such as A-A-59316 & MIL-A-22262B)

Pratt & Whitney, Rolls Royce, Praxair, Stryker, etc.

Color

Brown

Crystal structure

Alpha - Alumina

Other

Test Methods
Macrogrit Sizing:ANSI B74.12 Table 2
ANSI B74.12 Table 3
Customer Specific Standards