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abraSive<br />

Classification, abbreviation and area of<br />

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grains used. Classification as conventional<br />

abrasive and superabrasive is generally<br />

standard.<br />

conventional abrasive grain<br />

Aluminium<br />

oxide<br />

CBN<br />

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e.g. steels, super alloys<br />

Superabrasives<br />

SiC<br />

Diamond<br />

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glass, tungsten carbide, grey cast iron,<br />

brass. Exception: Titanium, titanium alloy<br />

Hardness comparison of abrasives and<br />

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Quartz<br />

Garnet<br />

Carbides<br />

in HSS<br />

WC<br />

PCD<br />

GROUND MATERIALS<br />

Emery<br />

Aluminium oxide<br />

Silicon carbide<br />

Boron carbide<br />

Cub. boron nitride<br />

Natural abrasives<br />

Conventional abrasives<br />

Superabrasives<br />

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2<br />

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Diamond<br />

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P HVK<br />

P HVK<br />

LQFK<br />

Grain<br />

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0 HVK Dx<br />

P P <br />

a<br />

P P <br />

10 2,54 2,0<br />

30 0,85 0,6<br />

a<br />

Dx<br />

19

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