Indian tungsten shells currently do not go beyond 500-550mm at 2Km, 0 deg. Israeli T-72/90 shells are the best. Below that is the Russian Mango. Arjun's Mk1 ammo is inferior to the Mango. DRDO claims to have made more advanced "indigenous" shells for the T-90 with 500-550mm penetration, dunno its status.
European shells manage as much as 700mm with tungsten. I do not believe they have DU shells.
Russian shells have tungsten and DU. Their best tungsten shells do 750mm to as much as 900mm.
American shells are mostly all DU, so that's that. Those are upwards of 750mm and higher, crossing 1000mm now.
DRDO is making more a more advanced tungsten shell that is aimed to achieve 650mm for the Arjun, dunno where that's gone.