This new alloy had a density of 18.5 cm which as a big improvement from the older tungsten rounds.
This XM578 APFSDS was a newly developed tungsten alloy which was 97.5% tungsten. High Explosive Anti-Tank(HEAT), and Armor Piercing Fin-Stabilized Discarding Sabot(APFSDS), but also the Shillelagh Missile. This can fire conventional rounds like High Explovise(HE), Anti-personnel. This longer barreled and improved varient of the XM-81 gun/launcher used in the M551 Sheridan and the M60A2 Starship. The armament for this vehicle was a stabilized XM150 152mm gun/launcher as discussed earlier. The Germans had used Daimler-Benz model but later moved to a MTU design of 1,500 horsepower. Both the American and German version had newly developed engines, the Americans had the Continental AVCR air-cooled V-12 diesel of 1,470 horsepower ( 1,100 kW). The MBT-70 was designed with a low silhouette, unlike the M60, but because of this the driver had to be moved to the turret. The design for this MBT was ahead of their time, with hydropneumatic suspension which allowed it for fast cross-country speeds. Also the housing the entire crew in a large turret and was armed with a 152mm XM150 gun/launcher which could use conventional ammunition and the Shillelagh Missile for long range combat. This tank was equipped with a number of advanced feature such as newly developed “kneeling” hydropneumatic suspension. This tank was built to in counter the new generation of the Warsaw Pact tanks by the Soviet Union. The MBT-70 is a experimental tank was an American-West German joint project to develop a new main battle tank during the 1960s.
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