T-62 / TR-580 / Tiran vs T-64

Soviet armor development diverged in the 1960s, yielding the T-62 as an iterative upgrade and the T-64 as a clean-sheet technological baseline. The T-62 stretched the existing T-55 chassis to field a 115mm smoothbore gun, maintaining a conventional four-man layout. Five years later, the T-64 eliminated the human loader, introducing a three-man crew, an autoloader, and composite armor.

Development and Design

Developed by Uralvagonzavod and introduced in 1961, the T-62 was conceived strictly to penetrate the frontal armor of Western tanks like the Centurion and M48. It utilized a stretched hull and a cast steel, egg-shaped turret. In contrast, the Morozov Design Bureau’s T-64, fielded in 1966, was the first Soviet tank to integrate an automatic loader. This permitted a smaller turret ring and reduced the combat weight to 38 tons, compared to the T-62's 40 tons. The Soviet military hoarded the T-64 for elite formations in East Germany, while mass-producing the cheaper T-62 ($0.3 million) for export and lower-tier units.

Protection and Firepower

The T-62 relies on homogeneous cast and rolled steel armor, which proved highly vulnerable to anti-tank guided missiles (ATGMs) during the 1973 Yom Kippur War. Its 115mm U-5TS smoothbore requires the gunner to elevate the barrel after firing to eject spent casings, breaking the line of sight and slowing the manual fire rate.

The T-64 introduced composite armor—layers of steel, fiberglass, and ceramics—offering vastly higher protection per ton against shaped charges. Its 125mm 2A46 smoothbore delivers higher kinetic energy and fires barrel-launched ATGMs. Modernized Ukrainian T-64BVs integrate thermal imaging and explosive reactive armor (ERA), widening the lethality gap over reactivated Russian T-62Ms, which are largely limited to outdated BDD appliqué armor and obsolete optics.

Mobility and Logistics

Uralvagonzavod equipped the T-62 with the V-55V 580 hp V-12 diesel. This direct descendant of the T-34’s engine yields a top speed of 50 km/h and requires minimal specialized training, making it suitable for conscript armies. The T-64 utilizes the compact 5TDF multi-fuel opposed-piston engine. Upgraded to 850 hp in variants like the T-64BM, it pushes the tank to 70 km/h. However, the 5TDF is mechanically complex and sensitive to dust, requiring a heavier logistical footprint and specialized mechanic training compared to the ubiquitous V-12.

Deployment and Combat Record

The T-62 has fought in nearly every post-war conflict involving Soviet-aligned states, from the Iran-Iraq War to Angola. The T-64 remained unexported and untested until the 1992 Transnistria War. Today, the T-64 forms the armored backbone of the Ukrainian Armed Forces. Concurrently, Russian forces, facing extreme materiel attrition, have reactivated thousands of stored T-62s. In direct engagements in Donbas and Kherson, the T-62’s lack of modern fire control and inferior base armor frequently result in catastrophic crew loss against drone-spotted artillery and modern ATGMs like the Javelin.

Conclusion

The T-64 is the superior main battle tank for peer-level mechanized warfare. Its base architecture provides the necessary foundation for modern combat, specifically:

• A 125mm autoloader system that outpaces the manual 115mm gun.
• Composite armor capable of mounting heavy modern ERA arrays.
• A smaller physical profile (38 tons, 2.17m height) that increases battlefield survivability.

The T-62 is obsolete for frontline tank-on-tank engagements. Its steel armor and manual loading cycle restrict its utility to direct-fire infantry support or as a mobile assault gun in low-intensity environments.