廠家 60目70#80目100#F90白玉剛 半導體噴砂用白剛玉磨料 白剛玉三高特點，適用于要求高的半導體噴砂： 1.高純度：Al2O3含量高達99.2%以上 2.高清潔度，成型完整，極少量粉末。  磨料放入玻璃杯中加水攪拌，水溶液清澈透明，少量懸浮物 3.高堆積密度，顆粒圓度值低 白剛玉是以優(yōu)質(zhì)鋁氧化粉為原料，經(jīng)電熔提煉結(jié)晶而成， 純度高、自銳性好、耐酸堿腐蝕、耐高溫、磨削能力強、發(fā)熱量小、效率高、,熱態(tài)性能穩(wěn)定它硬度略高于棕剛玉，韌性稍低。用其制成磨具，適用于磨削高碳鋼、高速鋼及不銹鋼等細粒度磨料還可以用于鑄造和耐火材料。 White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved. 主要物理特性Main Physical Properties 莫氏硬度MOHS HARDNESS                  9.0 堆積密度BULK DENSITY              1.75-1.95g/cm3 比重SPECIFIC GRAVITY 3.95g/cm3 體積密度 3.60 用于磨料，噴砂，研磨，拋光Used for abrasives,blasting,grinding    屬性properties         規(guī)格Type               粒度砂Grains 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# 保證值 Guarantee Value 典型值Typical Value  化學成分  Chemical Composition Al2O3        ≥99      99.50 SiO2        ≤0.1      0.04 Fe2O3        ≤0.1      0.04 Na2O        ≤0.35      0.23 白剛玉60#：