棕剛玉是由鋁礬土經電弧爐冶煉而成，呈棕褐色，產品硬度高、韌性大，用其製成的磨具適用於磨削碳素鋼、一般合金鋼、可鍛鑄鐵、硬青銅等，並廣氾應用於剛玉鐵溝澆鑄料，搗打料等耐火製品。
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Chemical Composition |
||||
|
Grit Size |
Al2O3
|
Fe2O3 (Iron Oxide)
|
CaO (Calcium Oxide)
|
Titanium Oxide (TiO2)
|
|
F12-F20 |
95.0 |
0.2 |
0.3 |
1.7 |
|
F24-F90 |
95.0 |
0.2 |
0.3 |
|
|
F100-F120 |
95.0 |
0.2 |
0.4 |
|
|
F150-F180 |
95.0 |
0.3 |
0.4 |
|
|
F230-F280 |
95.0 |
0.4 |
0.5 |
|
|
F320-F600 |
94.0 |
0.4 |
0.5 |
|
|
F800-F1000 |
94.0 |
0.5 |
0.5 |
|
|
F1200 |
94.0 |
0.5 |
0.7 |
|
付款方式︰ LC,TT
