high purity white corundum powder for polishing,lapping

high purity; strong grinding force; less calorific value; good acid/alkaline corrosion resistance;

Introduction:

White corundum(WA) is manufactured from Aluminia powder by crystal electro-fusion process at high termperature of over 2000C.

Its hardness is a little higher and toughness is a little lower than brown corundum.

It has the advantages of high purity, good sharpness, strong grinding force, less calorific value, high efficiency, good acid/alkaline corrosion resistance,high temperature      

resistance, good thermal stability, etc.

Applications:

It has been widely used to make bonded and coated abrasive tools for grinding carbon steel, alloy steel ;as materials of superprecision grinding and polishing, high quality refractory, precision casting; materials of carrier of chemical catalytic agent and specialized ceramics;to atomize glass or acrylic arts.

Mechanical Properties:

Item Description
Color	White
Crystal Form	Trigonal System
Hardness(Moh’s)	≥10
Melting Point(C)	2250
Max. Operating Temperature	1900
True Density(g/cm3)	≥3.90
Line Expansion	7-9

Chemical Composites:

Applications		Specifications		Chemical Composites			Magnetic Substance
				Al2O3	Na2O	SiO2
ABRISIVE			F12# --- 80#	≥99.40	≤0.40	≤0.03	——
			90# --- 150#	≥99.30	≤0.40	≤0.05	≤0.03
			180# -- 240#	≥98.20	≤0.40	≤0.03	——
			1# --- 63#	≥99.30	≤0.40	≤0.05	≤0.03
REFRACTOR MATERIALS			180# --- 0 200# --- 0 320# --- 0	≥99.30	≤0.40	≤0.05	≤0.06
POWDER			0 -- 1mm 1 --- 3mm 3 --- 5mm 5 --- 8mm 8 --- 12mm	≥99.00	≤0.40	≤0.02	≤0.10

Package:

25kg/bag;upon the customer’s request.