Alumina Zirconia 25%

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Description

GNPGraystar’s Alumina Zirconia 25% is a hard, very tough, sharp abrasive. It is produced by fusing zircon sand and alumina at about 1900°C.

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

PropertyValueComment

Bulk density

2.11 - 2.54 g/cm³

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ANSI B74.4

Crystal size

17.0 μm

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Density

1.98 - 2.38 g/cm³

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loose pack density

True particle density

4.6 g/cm³

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Mechanical

PropertyValueComment

Hardness, Knoop, HK2

1600 [-]

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Knoop (100)

Hardness, Mohs

9.0 [-]

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Thermal

PropertyValue

Melting point

1900.0 °C

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Chemical properties

PropertyValueTesting StandardComment

Aluminium

75 %

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ANSI B74.14

max. Al₂O₃

Calcium

0.1 %

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ANSI B74.14

CaO

Iron

0.3 %

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ANSI B74.14

Fe₂O₃

Magnesium

0.03 %

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ANSI B74.14

MgO

Silicon

0.3 %

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ANSI B74.14

SiO₂

Sodium

0.08 %

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ANSI B74.14

Na₂O

Sulfur

0.06 %

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ANSI B74.14

Titanium

0.4 %

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ANSI B74.14

TiO₂

Zirconium

23 %

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ANSI B74.14

ZrO₂

Technological properties

Property
Application areas

GNPGraystar’s Alumina Zirconia 25% is used primarily for producing large grinding wheels for foundry snagging and track grinding. It is also an excellent blasting material for granite and other materials where long life is required, as well as in some refractory applications.