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Subject: T-64 vs T-72
00_Chem_AJB    5/27/2008 12:58:43 PM
Wooo, it's been a few months but I'm back, constant PC troubles and uni work being the culprit. Any way a while ago I posted a link to an article in the Fort Knox site which gave in depth information into the development of tanks back in the old USSR, giving all the details of the problems with the Soviet military bureaucracy and procurement. However this lovely article is now gone. So as well all believe the T-64 was a superior machine to the T-72 however this article gave information to the contrary, and I would like to know what. Were these problems limited to the T-64A? etc. From what I know from other general sources the T-64 was the better tank, however it used a vastly different suspension than earlier tanks, did this give it a more comfortable and steadier ride over rough terrain? The armour is usually cited was being thinner than the T-72, also the tank weighed slightly less, so who did in fact have the better protection? (again this could depend on the model) Also the auto loader, but more specifically the ammunition storage, I've read that the T-64 was less prone to being a jack in the box when hit is this true? And finally the internal space one can imagine both tanks being cramped especially the driver's post but which crew was worse off size wise?
 
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Bluewings12       5/31/2008 12:32:48 PM
A lot of questions here .

I know the T-72 serie better than I know the T-64s . Anyway I would say that the '72 is a better Tank .

But which T-72 are we talking about ? T-72B ? T-72BV ? T-72BVS with Kontakt-1 ? T-72BV with Kontakt-5 ?
T-72BM with Kontakt-5 ? T-72BU (T-90) ?

And which T-64 ? The A version ? The B version ?..

They all have different protection levels , different sights , different FCS , different engines , different suspension , etc ...

Since Tanks heavily rely on protection (armor) and firepower (gun+FCS) , that could be a good start .

The russian armor is rather good and can be tricky to deal with . All Russian Tanks features cast turret instead of rolled plates (It appears that modern cast RHA offer?s only ~90—92% of the resistance of rolled plate) because it is cheaper to manufacture . The Russian steel is usualy poor and cheap , they mostly use 270BHN cast armor , Russian sources speculate that their cast is high nickel and therefore harder (330-350BHN ?) .
The T-64 is know to feature Kvarts , which is a Fused Quartz like material . Black ceramic is reported to be in the T-64B and possibly other Russian tanks (this could be Alumina, since it appears black when containing rare earth elements) .

On the T-72s , the Russian added laminated armor on top of the cast steel . I do not have the figures for the T-64(s) but the basic T-72B is something like that : (keep the table handy as I will refer to it few times )

Steve Zalogas reports the turret has 435mm thick ?T-55 type BDD type insert?, plus 380mm cast armor utilizing Aluminum instead of mild steel/ rubber combination. The stated resistance of the turret is 530mm KE armor and 520mm HEAT protection. The insert adds 180mm KE and 150mm HEAT armor, for a TE of 0.41 KE and 0.34 HEAT, similar to the T-55/62 BDD figures. The glacis is thought to be 30mm SHS plus 60mm RHA and 105mm Steltexolite and 50mm RHA. The BV and S models have K-1 ERA.

The table :
A = Lower hull
B = Glacis
C = Front 1/3 side hull
D = Front side turret Side Turret
E = Upper front turret
F =Rear Turret
G = Rear Hull
H = side hull
J =Mantlet
K = Weakened Zone
L = Front turret corners
M = Side Turret

T-72B :
A = 210mm KE & HEAT
B = 500mm KE & 580mm HEAT
C = 70?120mm KE & 210?260mm HEAT
D = 410mm KE & 510mm HEAT
E = 280?290mm KE & 370?410mm HEAT
F =110?140mm KE & 180?270mm HEAT
G = 60mm KE & 300?400mm HEAT
H = 70?120mm KE & ~210?260mm HEAT
J = 470mm KE & 540mm HEAT
K = 500mm KE & 520mm HEAT
L = 470mm KE & 490mm HEAT
M = 260mm KE & 340mm HEAT

Now , if we compare to the T-72BM with Kontakt-5 , we get :

A = 240mm KE & 380mm HEAT
B =670?710mm KE & 990?1070mm HEAT
C = 90?140mm KE & 510 ? 560mm HEAT
D = 420?640mm KE & 680?850mm HEAT
E = 350?390mm KE & 560?940mm HEAT
F =110?140mm KE & 180?270mm HEAT
G = 60mm KE & 300?400mm HEAT
H = 70?120mm KE &~ 210 ? 260mm HEAT
J =560?580mm KE & 940?1060mm HEAT
K = 700?740mm KE & 1040?1120mm HEAT
L = 650?710mm KE & 1000?1100mm HEAT
M = 280mm KE & 340mm HEAT

To give my American friends something to compare with , here is what we get with the Abrams M1A2 :

The weight and the front armor thickness remained the same (than M1A1HA) , however 2nd Generation dU armor is included. If the dU/steel backing plate includes hard steel backing, the overall Ceramic-Steel resistance should lead to a increase in the backing plate to 55% the base values, which in turn has probably been upgraded to AD-95 + 2 x Kevlar plus 4 inches dU /SHS . This equals 0.85 x 1.55, for a TE of 1.32 KE. & 1.88 HEAT. The ± 30° turret armor case is
790—800 KE and 1180—1450 HEAT, when the published maximum values is 800 mm vs. KE.

A = 590-650mm KE & 800-970mm HEAT
B = 560-590mm KE & 800-1050mm HEAT
C = 160mm KE & 900mm HEAT
D = 300mm KE & 480mm HEAT
E = N/A
F = 90mm KE & 410mm HEAT
G = 100mm KE & 500mm HEAT
H = 90mm KE & 680mm HEAT
J = 880mm KE & 1620mm HEAT
K = 900mm KE & 1500mm HEAT
L = 880mm KE & 1310mm HEAT
M = 300mm KE & 480mm HEAT

Abrams M1A2-SEP :

The weight and the front armor thickness remained the same, however density increase is achieved by substituting Titanium for some structures and armor in the rest of the tank. In addition 3rd generation dU armor is included. With dU/SHS backing plate the target resistance is up 55%, and adding a thin Graphite confining layer acts like a seal and increases the confining effect on the armor over 5%. The M-1A2 is rumored to have ?Dorchester armor?. If we assume this is the case and work in the weight saving from Titanium, then an insert density of 2.3g/cm might be possible leading to a 1x UO² 100 / 6x rubber = 2.3 g/cm³. This would also be BDD type NERA arrangement, leading to the third generation dU armor. The TE values should be 0.47 x 49 + 29 x 1.63[dU/Back + Graphite] x 1.17[BDD] ÷70 = 1.41 KE & 1.97 HEAT

A = 590?650mm KE & 800?970mm HEAT
B = 560?590mm KE & 800?1050mm HEAT
C = 160mm KE & 900mm HEAT
D = 350mm KE & 540mm HEAT
E = N/A
F = 90mm KE & 410mm HEAT
G = 100mm KE & 500mm HEAT
H = 90mm KE & 680mm HEAT
J = 950mm KE & 1620mm HEAT
K = 960mm KE & 1510mm HEAT
L = 940mm KE & 1320mm HEAT
M = 350mm KE & 540mm HEAT

Sorry to bother you with numbers , but it shows a lot ;-)
To go back on the T-72 vs T-64 , it is now clear that the 72 is another kind of beast when you fire at it , especialy when equipped with explosive reactive armor . The T-64 is waaay behind .

Now , the guns and FCSs .

The T-64 has a 125mm (2A46) D81TM smooth bore gun .
The T72 has the same gun (!) , so they are both equals here .

On the T-64 , the gun is only stabilized on 2 planes and the FCS cannot allow the Tank to fire on the move . The T-72 can fire on the move because the Gunner has the 1V528 ballistic computer .
The autoloaders are similar on both Tanks but slightly faster on the T-72 . Both Tanks are prone to be a "jack in the box" when penetrated .
Both Tanks have a crew of 3 .

On rough terrain , the T-72 is much faster than the T-64 (it is also a bit faster on road) . The T-64 was somehow underpowered (10 cylinders engine , 750hp) . The T-72 has a 840hp V8 who works much better , even if the Tank is heavier .

To be honest , both Tanks sucks , lol !
Nevertheless , a T-72BM with Kontakt-5 ERA can be a dangerous foe and should not be underestimated even by the best Tank out there . If the bugger is using the latest Russian ammo (3BM42 or 3BM42M) , you must avoid to get hit . The round might not penetrate your mighty Abrams at over 2000m , but it will damaged some systems  , you can count on it .

Cheers .



 
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00_Chem_AJB       5/31/2008 1:28:19 PM
True I didn't say which model, but I was thinking more of the T-64B against the T-72A, both were in production at around the same time.
 
The T-72 is not in any way kind to it's crews, when I frist saw one at Duxford I was amazed at how low down it is and the small size of the turret, now the T-64 isn't much bigger, true. However both tanks have different auto loaders, The T-64 has the hydrolic powered 'basket type' while the T-72 has the eletric powered 'cassette type' Both are reliable though there were issues with the auto loaders on the T-64A, the whole gunner's losing their arms stories. Due to the ammo storage arrangement on the T-64, the autoloader itself gives around 3in more head room than a T-72, very usefull in a tank as cramped as these. Also because of this the ammo is stored lower in the hull, and thus less exposed, the basket design also allows the carosell  to traverse in two directions allowing for faster selection of ammunition loading and thus a faster fireing rate, 6-9 seconds, vs 6-14 seconds for the cassette type. The T-72 also has a falw reminicent of the T-62 series; a small hatch at the back for the shell stubs are ejected, while this saves room it is not good in an NBC enviroment, unless however this system can be turned off.
 
As I said before the turret crew compartment is smaller in a T-72, which for long endurance is not a good thing, it's like been stuck in the back seat of a car, hunched over for a long road trip, also the T-64 was faster than the T-72 until it had the engine upgrade in the B model. While the T-72 may have been faster on rough terrain, it was not used in Afghanistan as the susspenation was prone to failure over that kind of ground. Both tanks have v very cramped driver positions an can be hard to drive with the two stick steering.
 
The armour values you gave were for the T-72B, but it was the T-64 which first introduced composite armour, using two layers of steel with a kind of fiberglass filler, I am not too sure on the properties of the fibreglass. Providing excellent protection at the time, enough to stave off 105mm L7/M68 rounds, the most common NATO tank gun at the time of their introduction. Even the T-72M/M1s (monkey models) could old their own against L7 armed Centurions in Lebanon in 1982. It was only with the introduction of the T-72B in 1985, that the base protection of the T-72s came close to that of the T-64s, by then both had Konkat 1 ERA, which went into wide spread use in 1983. 
 
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00_Chem_AJB       5/31/2008 1:57:09 PM
(On the T-64 , the gun is only stabilized on 2 planes and the FCS cannot allow the Tank to fire on the move . The T-72 can fire on the move because the Gunner has the 1V528 ballistic computer .)
 
Only T-72B had a modern ballistic computer, also the T-64 could fire on the move however when firing the AT-8 it had to remain sationary, and the tank commander also had access to control the tanks weapons.
 
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00_Chem_AJB       5/31/2008 3:59:03 PM
(On the T-64 , the gun is only stabilized on 2 planes and the FCS cannot allow the Tank to fire on the move . The T-72 can fire on the move because the Gunner has the 1V528 ballistic computer .)
 
Only T-72B had a modern ballistic computer, also the T-64 could fire on the move however when firing the AT-8 it had to remain sationary, and the tank commander also had access to control the tanks weapons.
 
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Beryoza    BW   5/31/2008 7:41:41 PM
I don't know where you get your data from, but T-64B is certainly capable of firing on the move. It shares the same 1A33 FCS with the T-80BV. 1A33 is capable of highly accurate fires out to 2000m, which is the design range.
 
Moreover, all T-64 variants have a much higher practical rate of fire than any T-72 variant until the T-90, and T-72BM, when the latter tanks adopted the "sequence mode" present in the former.
 
In terms of protection, too, only T-72B begins to approach T-64B. The only practical advantages T-72 vehicles had over their contemporary T-64 variants is general mechanical reliability and ease of maintenance, where the early T-64s were a nightmare.
 
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00_Chem_AJB       5/31/2008 7:47:35 PM
Boris! How's it been? How are your studies in Aus going?
 
Well there is a reason I want to read that artical again, I have had no luck in finding it, but it did clearly say some asspects of the T-72 model were supirior to the T-64, but it is not obvious. Also I also once read that the T-72BV had almost the same protection offered by the T-80BV, so I wouldn't call it short.
 
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00_Chem_AJB       5/31/2008 7:55:57 PM
The original thread which prompted me to strat this one, link
 
Like I said though the artical has been pulled.
 
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Bluewings12       5/31/2008 8:57:51 PM
Hi Boris .

The T-64B is not capable to fire on the move in the way we fire on the move now . The gun stabilization and the FCS is simply not good enough . The T-80UM has the FCS you need . When an Abrams or a Leopard can fire at you at full speed @ 3800m on the move , you 'll better duck in your T-64B . Leclerc can even do better than that .

The autoloader and the FCS on the T-72BM are the one I was talking about . No probs with those , they can fire up to 8 rounds/minutes at full speed with a 90% accuracy at up to 2000m (which is short) .

Cheers .

 
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00_Chem_AJB       5/31/2008 9:06:35 PM
Blue lets keep in mind we are talking about the 1970s-1980s here if you are going to bring in NATO tanks use the same time period.
 
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Bluewings12       5/31/2008 9:12:38 PM
Ok 00-Chem , sorry .
But the T-64B is still a poor Tank by my standard ...

Cheers .

 
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Beryoza       5/31/2008 10:30:04 PM
BW wrote "The T-64B is not capable to fire on the move in the way we fire on the move now . The gun stabilization and the FCS is simply not good enough . The T-80UM has the FCS you need . When an Abrams or a Leopard can fire at you at full speed @ 3800m on the move , you 'll better duck in your T-64B . Leclerc can even do better than that ."
 
I thought we were talking about T-72 v T-64...? No question that the modern Western tanks can outfight the T-64 but, being of a completely different generation, I would be very surprized if they couldn't!
 
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Beryoza       5/31/2008 10:34:03 PM
"The autoloader and the FCS on the T-72BM are the one I was talking about . No probs with those , they can fire up to 8 rounds/minutes at full speed with a 90% accuracy at up to 2000m (which is short) ."
 
And are the T-72BM and T-64B contemporary? Also, firing on the move at high speed is quite challenging for the T-72B/BM because of the way the gunner has to input data into the FCS (i.e. minimum two, preferably three lases in a five second period).

 
 
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Beryoza       5/31/2008 10:46:40 PM

Boris! How's it been? How are your studies in Aus going?

 

Well there is a reason I want to read that artical again, I have had no luck in finding it, but it did clearly say some asspects of the T-72 model were supirior to the T-64, but it is not obvious. Also I also once read that the T-72BV had almost the same protection offered by the T-80BV, so I wouldn't call it short.



Busy! My studies are progressing quite lethargically but, then, I do suffer from Acute Motivational Deficiency Syndrome!
 
The main advantage T-72 tanks had over T-64 was mechanical simplicity and all that goes with it. Early T-64 variants were a maintenance nightmare and quite unreliable mechanically, especially in cold starts. T-72 would start up first time, every time. T-64A improved on this a little, but the T-64B was the first tank in the series that could be reasonably described as reliable, and even that variant is quite inferior to contemporary T-72s in that respect.
 
T-64BV and T-80BV had remarkably similar protection and firepower levels. T-72B was, indeed, the first UVZ vehicle that could compare with Omsk and Kharkiv in terms of protection, but as a combat vehicle it still suffered from inferior practical firepower (ROF, FCS, tube-launched ATGM), though it was mechanically more reliable and had a smaller logistical footprint, especially when compared to T-80.
 
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Beryoza       5/31/2008 10:53:29 PM

Ok 00-Chem , sorry .
But the T-64B is still a poor Tank by my standard ...

Cheers .



..er...compared to contemporary rivals, NATO or Soviet, T-64B is arguably the best MBT in the world. The American M-60A3 and the British Chieftain are the only ones to have a shot at the title, with the M-60A3 having its outstanding TTS and FCS, but it is undergunned and has inferior protection and mobility.
 
Chieftain with TOGS has the firepower and thermals, but doesn't have the mobility and protection. Additionally, T-64B/BV is highly resistant to HEAT/HESH.
 
Leopard and AMX-30 don't fare well in any of the three categories.
 
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00_Chem_AJB       6/1/2008 9:45:59 AM
I wouldn't knock off the Leopard as it was NATO's most mobile tank, had the Chieftain not had the L60 problem, it would of been a world beater in terms of fire power, and the armour along with wet ammunition storage gave good crew survivability. Personally the 3rd gen T series tanks would of been much beter had they been a little larger, allowing more room for the crew, and better storage of ammunition. I know they wanted to keepo a low profile but the later FCSs somewhat removed that advantage.
 
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