Grain: FEPA #12-#220
Micro-powder: FEPA #230-#1200
JIS #240-#8000
| Usage |
For vitrified wheels |
For Resinoid Bond |
For Coated Abrasives |
| Type&Grade |
WA |
WA-B |
WA-P1 |
Physical Chemical Performance Index
| Symbol |
Range of the Grain |
Chemical Composition(%,by weight) |
True Density |
Shape of the Grain |
| WA |
F12~80 |
≥ 98.50 |
≤ 0.40 |
≥ 3.90 |
Blocky |
| F90~150 |
≥ 98.00 |
≤ 0.40 |
| F180~220 |
≥ 98.00 |
≤ 0.40 |
| F230~400 |
≥ 97.50 |
≤ 0.50 |
| F500~1200 |
≥ 97.00 |
≤ 0.60 |
| WA-B |
F12~80 |
≥ 99.00 |
≤ 0.40 |
≥ 3.90 |
Blocky |
| F90~150 |
≥ 98.50 |
≤ 0.40 |
| F180~220 |
≥ 98.00 |
≤ 0.40 |
| F230~600 |
≥ 97.50 |
≤ 0.50 |
| WA-P1 |
F16~80 |
≥ 99.00 |
≤ 0.40 |
≥ 3.90 |
Needle Shape |
| F100~150 |
≥ 98.50 |
≤ 0.40 |
| F180~400 |
≥ 98.00 |
≤ 0.50 |
| F500~1200 |
≥ 97.50 |
≤ 0.60 |