

It is used to grind measuring and cutting tools, instruments, etc., whichdemand low roughness on the surface.
Character:
It is used to grind measuring and cutting tools, instruments, etc., whichdemand low roughness on the surface.
Character:
|
Grit |
low chromium |
medium chromium |
high chromium |
||||||
|
Al2O3 |
Cr2O3 |
Na2O |
Al2O3 |
Cr2O3 |
Na2O |
Al2O3 |
Cr2O3 |
Na2O |
|
|
F12~F80 |
≥98.50 |
0.2~0.45 |
≤0.50 |
≥98.50 |
0.45~1.00 |
≤0.50 |
≥97.40 |
1.00~2.00 |
≤0.55 |
|
F90~F150 |
≥98.50 |
≤0.55 |
≥98.20 |
≤0.60 |
≥97.00 |
≤0.60 |
|||
|
F180~F220 |
≥98.00 |
≤0.60 |
≥97.80 |
≤0.70 |
≥96.50 |
≤0.70 |
|||
|
Chemical Composition(%, by weight) |
||
|
Grit |
AI2O3 |
Cr2O3 |
|
F12~F90 |
≥98.5 |
0.15~0.40 |
|
F100~F220 |
94.0~97.5 |
0.80~1.50 |
Note: special requirement on Cr2O3 content can be satisfied through discussion.