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Mean diameter of pink corundum grit

Mean diameter of pink corundum grit

Pink corundum  is also called pink fused alumina and pink aluminum oxide,short for PFA or PA.

Pink corundum is obtained by adding chromium oxide to aluminum oxide during the fusion process.

Zhengzhou haixu abrasives co.,ltd,founded in 1999 from China,has been manufacturing and exporting abrasives for more than 20years,which includes pink corundum,brown corundum,white corundum ,black carborundum and green carborundum.

Divided by the purity of Cr2O3,our factory have three kinds which called Low Chromium( 0.2-0.45% Cr2O3),Medium Chromium(0.45-1% Cr2O3) and high Chromium(1.0-2.0% Cr2O3).

About the sizes,we mainly produce the grit under JIS standard and FEPA standard separately,and the mean diameter of its size is as follows:

FEPA STANDARD

Grit designationMean diameter(um)Grit designationMean diameter(um)
F122000-1700F54355-300
F141700-1400F60300-250
F161400-1180F70250-212
F201180-1000F80212-180
F221000-850F90180-150
F24850-710F100150-125
F30710-600F120125-106
F36600-500F150106-75
F40500-425F18090-63
F46425-355F22075-53

JIS STANDARD

Grit designationMean diameter(um)Grit designationMean diameter(um)
#122000-1700#54355-300
#141700-1400#60300-250
#161400-1180#70250-212
#201180-1000#80212-180
#24850-710#100150-125
#30710-600#120125-106
#36600-500#150106-75
#40500-425#18090-63
#46425-355#22075-53

 

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