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Comparison of standard US grit size to European grit and micron size
Standard grit 120 180 240 320 360 400 600 800 1200
P120 P180 P220 P320 P500 P800 P1200 P2400 P4000

Metallographic Alumina Grinding Papers

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Metallographic Alumina Grinding Papers
Alumina Grinding Papers
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Metallographic 12-inch P220 grit Plain-Backed Alumina Grinding Papers
12-inch Plain-Backed
P220 grit Alumina Grinding Papers


Alumina abrasive are typically tougher, duller, more durable abrasive as compared to SiC. Alumina grinding papers are more useful for very soft materials such as copper, alumninum, gold and silver as well as for refractory materials such as rhenium, tungsten and vanadium primarily because alumina does not fracture as easily and therefore embeds less into softer specimens.

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