Brown alunimium oxide has hith touthness. Micro hardness is 1800-2200kg/mm2,Abrasive articles made of it are suited for grinding metals of high-tensile strength such as steel, annealed malleable iron and hard high-class refractory products.
棕刚玉化学成份 Chemical composition of Brown Aluminius Oxide
代号NO.
粒度Grit Size
化学成份%(按重量百分比)
Chemical Composition%(by weight)
Al2O3
TiO2
A
F
4# - 80#
90# - 150#
180# - 220#
220# - 1200#
95.0-97.5
94.0-97.5
93.0-97.5
≥92.0
1.5-3.8
P
P8 - P80
P100 - P150
P180 - P220
95.0-97.5
94.0-97.5
93.0-97.5
1.5-4.2
R
8 - 5mm, 5 - 3mm
3 - 1mm, 1mmF
0.088mmF
0.074mmF
95.0
90.0
88.0
3.0
5.0
AA
F
4# - 80#
90# - 220#
220# -
93.0
91.0
90.0
1.5-4.2
1.5-4.2
4.5
P
P8 - P80
P100 - P220
P220 -
93.0
91.0
90.0
1.5-4.2
1.5-4.2
4.5
耐火材料专用棕刚玉分段砂 Sectional Brown Aluminius Oxide for Reeractory Products In Special
用其制成的磨具，适于磨削抗张强度较高的金属，如各种通用钢材，可锻铸铁和硬青铜等。也可用于制造高级耐火材料等。