Abrasive article for high-speed grinding operations

An abrasive article comprising:

• a bonded abrasive body having abrasive particles comprising microcrystalline alumina (MCA) contained within a single phase vitreous bond material;
• wherein the bonded abrasive body comprises:
• a strength ratio (MOR/MOE) of at least 1.0;
• a porosity content of at least 42 vol % and not greater than 56 vol % for the total volume of the bonded abrasive body,
• an abrasive particle content of at least 42 vol % and not greater than 52 vol % for the total volume of the bonded abrasive body;
• and
• a bond material content of at least 6 vol % and not greater than 14 vol % for the total volume of the bonded abrasive body;
• and
• wherein the single phase vitreous bond material comprises:
• a content of boron oxide (B2O3) in an amount of at least 13 wt % and not greater than 17 wt % for a total weight of the bond material;
• and
• a content of silicon oxide (SiO2) in a wt % amount of at least about 1.5 times greater than the amount of boron oxide (B2O3) and not greater than about 5 times greater than the amount of boron oxide (B2O3).