SPECIFICATIONcr2o3 42% basis 40% minsio2 12%maxAlo2 12% maxmgo 22% maxcr;fe 2.6:1 mins 0.05%maxp 0.007% maxsize. 10 mm to 250 mm 70% min below 10 mm 30 % maxmoisture. 2% max