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Description
Applications:
The FEPA F grades are especially suitable for the manufacturing vitrified bonded abrasives for working hardened steels and alloys with tensile strengths of over 50 kg/mm². It is also used in tool grinding, knife-sharpening applications, precision grinding, profile grinding, flute grinding, tooth grinding, dry grinding of blade segments and mounted wheels.
The FEPA P grades are a preferred material for working non-ferrous metals and the alloys (copper, aluminum, zinc, brass, Bronze), but also used for softer materials, such as wood, synthetics and paints.
Specification
|
Items/ Chemical Composition |
Unit |
Index |
|
|
Size: F12-F80 |
Al2O3 |
% |
97.4min |
|
Cr2O3 |
% |
1.00-2.00 |
|
|
Na2O |
% |
0.55max |
|
|
F90-F150 |
Al2O3 |
% |
97.00min |
|
Cr2O3 |
% |
1.00-2.00 |
|
|
Na2O |
% |
0.60max |
|
|
F180-F220 |
Al2O3 |
% |
96.50min |
|
Cr2O3 |
% |
1.00-2.00 |
|
|
Na2O |
% |
0.70max |
|
|
Physical Property |
Basic Minerals |
|
α— AI2O3 |
|
Crystal size |
μm |
600~2000 |
|
|
True density |
g/cm3 |
≥3.90 |
|
|
Bulk density |
g/cm3 |
1.40~1.91 |
|
|
Knoop hardness |
g/mm2 |
2200~2300 |
|
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