Mean diameter of pink corundum
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 pink corundum for more than 20years.
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 macrogrit under JIS standard and FEPA standard separately,and the mean diameter of its size is as follows:
JIS STANDARD
| Grit designation | Mean diameter（um) | Grit designation | Mean diameter（um) |
| F12 | 2000-1700 | F54 | 355-300 |
| F14 | 1700-1400 | F60 | 300-250 |
| F16 | 1400-1180 | F70 | 250-212 |
| F20 | 1180-1000 | F80 | 212-180 |
| F22 | 1000-850 | F90 | 180-150 |
| F24 | 850-710 | F100 | 150-125 |
| F30 | 710-600 | F120 | 125-106 |
| F36 | 600-500 | F150 | 106-75 |
| F40 | 500-425 | F180 | 90-63 |
| F46 | 425-355 | F220 | 75-53 |
JIS STANDARD
| Grit designation | Mean diameter（um) | Grit designation | Mean diameter（um) |
| #12 | 2000-1700 | #54 | 355-300 |
| #14 | 1700-1400 | #60 | 300-250 |
| #16 | 1400-1180 | #70 | 250-212 |
| #20 | 1180-1000 | #80 | 212-180 |
| #24 | 850-710 | #100 | 150-125 |
| #30 | 710-600 | #120 | 125-106 |
| #36 | 600-500 | #150 | 106-75 |
| #40 | 500-425 | #180 | 90-63 |
| #46 | 425-355 | #220 | 75-53 |
