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IS-4

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IS-4

AnnoR90_IS_4M.png
Battle Tier
1234567891011
Overview
Mouse over "
Well, the ones further down, of course.
" for more information
[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
6,100,000  Credits Cost
25002500 HP Hit Points
60.02/66.360.83/66.3 t Weight Limit
Crew
  1. Commander (Radio Operator)
  2. Gunner
  3. Driver
  4. Loader
Mobility
750750 hp Engine Power
43/14 km/h Speed Limit
2626 deg/s Traverse
12.512.33 hp/t Power/Wt Ratio
NoNo Pivot
Armor
140/160/100 mm Hull Armor
250/200/170250/200/170 mm Turret Armor
Armament







{{#ifeq:ARMOR_PIERCING_CR|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/APCR/HE







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/HEAT/HE
Shells




















1025/4800/608




















1065/5200/630
Shell Cost
390/390/530440/440/530 HP Damage
175/217/61258/340/68 mm Penetration



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5.45 r/m 

Standard Gun

Reload Times
Nominal: 11 s
50% Crew: 13.63 s
75% Crew: 11.9 s
100% Crew: 10.55 s
Rammer: 9.5 s
Vents: 10.32 s
Both: 9.29 s
Both and BiA: 9.08 s
Both and Max Crew %: 8.71 s

See Crew, Consumables, or Equipment for more information.



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5 r/m 

Standard Gun

Reload Times
Nominal: 12 s
50% Crew: 14.87 s
75% Crew: 12.98 s
100% Crew: 11.51 s
Rammer: 10.36 s
Vents: 11.26 s
Both: 10.13 s
Both and BiA: 9.91 s
Both and Max Crew %: 9.5 s

See Crew, Consumables, or Equipment for more information.
Rate of Fire






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2125.5

Standard Gun

Using Shell Type 1 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2125.5
50% Crew: 1716
75% Crew: 1965.6
100% Crew: 2215.2
100% Crew
Vents: 2265.9
Rammer: 2460.9
Both: 2515.5
Both and BiA: 2574
Both and Max Crew %: 2683.2

Advantageous Damage Per Minute
First-shot DPM: 2515.5
50% Crew: 2106
75% Crew: 2355.6
100% Crew: 2605.2
100% Crew
Rammer: 2850.9
Vents: 2655.9
Both: 2905.5
Both and BiA: 2964
Both and Max Crew %: 3073.2

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2125.5
50% Crew: 1716
75% Crew: 1965.6
100% Crew: 2215.2
100% Crew
Vents: 2265.9
Rammer: 2460.9
Both: 2515.5
Both and BiA: 2574
Both and Max Crew %: 2683.2

Advantageous Damage Per Minute
First-shot DPM: 2515.5
50% Crew: 2106
75% Crew: 2355.6
100% Crew: 2605.2
100% Crew
Rammer: 2850.9
Vents: 2655.9
Both: 2905.5
Both and BiA: 2964
Both and Max Crew %: 3073.2

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (530 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2888.5
50% Crew: 2332
75% Crew: 2671.2
100% Crew: 3010.4
100% Crew
Vents: 3079.3
Rammer: 3344.3
Both: 3418.5
Both and BiA: 3498
Both and Max Crew %: 3646.4

Advantageous Damage Per Minute
First-shot DPM: 3418.5
50% Crew: 2862
75% Crew: 3201.2
100% Crew: 3540.4
100% Crew
Rammer: 3874.3
Vents: 3609.3
Both: 3948.5
Both and BiA: 4028
Both and Max Crew %: 4176.4

See here, here, or here for more information.






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2200

Standard Gun

Using Shell Type 1 (440 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2200
50% Crew: 1777.6
75% Crew: 2032.8
100% Crew: 2292.4
100% Crew
Vents: 2345.2
Rammer: 2547.6
Both: 2604.8
Both and BiA: 2662
Both and Max Crew %: 2776.4

Advantageous Damage Per Minute
First-shot DPM: 2640
50% Crew: 2217.6
75% Crew: 2472.8
100% Crew: 2732.4
100% Crew
Rammer: 2987.6
Vents: 2785.2
Both: 3044.8
Both and BiA: 3102
Both and Max Crew %: 3216.4

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (440 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2200
50% Crew: 1777.6
75% Crew: 2032.8
100% Crew: 2292.4
100% Crew
Vents: 2345.2
Rammer: 2547.6
Both: 2604.8
Both and BiA: 2662
Both and Max Crew %: 2776.4

Advantageous Damage Per Minute
First-shot DPM: 2640
50% Crew: 2217.6
75% Crew: 2472.8
100% Crew: 2732.4
100% Crew
Rammer: 2987.6
Vents: 2785.2
Both: 3044.8
Both and BiA: 3102
Both and Max Crew %: 3216.4

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (530 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2650
50% Crew: 2141.2
75% Crew: 2448.6
100% Crew: 2761.3
100% Crew
Vents: 2824.9
Rammer: 3068.7
Both: 3137.6
Both and BiA: 3206.5
Both and Max Crew %: 3344.3

Advantageous Damage Per Minute
First-shot DPM: 3180
50% Crew: 2671.2
75% Crew: 2978.6
100% Crew: 3291.3
100% Crew
Rammer: 3598.7
Vents: 3354.9
Both: 3667.6
Both and BiA: 3736.5
Both and Max Crew %: 3874.3

See here, here, or here for more information.
Damage Per Minute


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0.46 m 

With 50% Crew: 0.57 m
With 75% Crew: 0.498 m
With 100% Crew: 0.441 m
With BiA: 0.431 m
With BiA and Vents: 0.422 m
Maximum possible: 0.404 m

For more details, see Crew


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0.38 m 

With 50% Crew: 0.471 m
With 75% Crew: 0.411 m
With 100% Crew: 0.364 m
With BiA: 0.356 m
With BiA and Vents: 0.349 m
Maximum possible: 0.334 m

For more details, see Crew
Accuracy


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2.9 s 

With 50% Crew: 3.592 s
With 75% Crew: 3.137 s
With 100% Crew: 2.781 s
With GLD: 2.528 s
With BiA: 2.719 s
With BiA and Vents: 2.66 s
With both and GLD: 2.418 s
Maximum possible: 2.318 s

For more details, see Crew or Equipment


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2.9 s 

With 50% Crew: 3.592 s
With 75% Crew: 3.137 s
With 100% Crew: 2.781 s
With GLD: 2.528 s
With BiA: 2.719 s
With BiA and Vents: 2.66 s
With both and GLD: 2.418 s
Maximum possible: 2.318 s

For more details, see Crew or Equipment
Aim time
2222 deg/s Turret Traverse
360° Gun Arc
-6°/+16°-6°/+16° Elevation Arc
3030 rounds Ammo Capacity
General
1515 % Chance of Fire






400 m 

With 50% Crew: 314.3 m
With 75% Crew: 357.2 m
With 100% Crew: 400 m
With Recon and Situational Awareness: 420.2 m
With Coated Optics: 440 m
With Binocular Telescope: 500 m
Maximum possible: 572.6 m

For more details, see Skills or Equipment






400 m 

With 50% Crew: 314.3 m
With 75% Crew: 357.2 m
With 100% Crew: 400 m
With Recon and Situational Awareness: 420.2 m
With Coated Optics: 440 m
With Binocular Telescope: 500 m
Maximum possible: 572.6 m

For more details, see Skills or Equipment
View Range


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720 m 

With 50% Crew: 565.7 m
With 75% Crew: 642.9 m
With 100% Crew: 720 m
With 100% Signal Boost: 864 m
When affected by 100% Relaying: 792 m
Maximum possible: 1036 m

For more details, see Skills or Equipment


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720 m 

With 50% Crew: 565.7 m
With 75% Crew: 642.9 m
With 100% Crew: 720 m
With 100% Signal Boost: 864 m
When affected by 100% Relaying: 792 m
Maximum possible: 1036 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top
IS-4

Additional Statistics
(Top Configuration)

Camouflage

  • Stationary: 6.9%
  • When Moving: 3.4%
  • When Firing: 1.4%


Terrain Resistance

  • On Hard Ground: 1.15
  • On Medium Ground: 1.53
  • On Soft Ground: 2.59


Dispersion Change Values

  • Turret Contribution
  • Rotation: 0.08
  • Shot Recoil: 3.36
  • Suspension Contribution
  • Acceleration: 0.24
  • Turning: 0.24


With 100% Crew

X

AnnoR90_IS_4M.png

6100000

The IS-4 is a Soviet tier 10 heavy tank.

The project was developed by the Design Bureau of the Chelyabinsk Kirov Plant starting in December 1943. In April 1944 two prototypes of the Object 701 were built. After prototype trials, the design was improved. In late 1944 and early 1945 two more prototypes underwent trials. The Object 701 No. 5 was recommended for adoption into service. However, production was called off in favor of the IS-3 just entering mass-production. After IS-3 production was suspended in 1946, production of the IS-4 began, continuing until 1949. A total of 25 IS-4M tanks were built in 1951. Later all previously produced tanks were modernized to the level of the IS-4M. According to different sources, between 235 and 258 vehicles were built in total; they were stationed in the Far East.

As the final development of its Heavy Tank tech tree, the IS-4 goes for the more versatile "Jack-of-All-Trades/Master-of-None" approach to its in-game performance. Its gun is adequate for its tier, but is quite unimpressive in any single aspect such as accuracy or DPM. Its turret armor is quite strong frontally, but can be easily over-matched when shot through the exposed roof, where it is much weaker. Its hull armor is decent, boasting a tough all-around layout which gives the tank good side-scraping capabilities, but is relatively easy to punch through from the front, even if angled properly. Its mobility is totally different from its quick and nimble brother, the IS-7 with the IS-4 being very sluggish and slow by comparison.

The culmination of these characteristics makes the IS-4 feel like more of a support tank rather than an all out assault leader. While the IS-4 mounts a more accurate 122mm main gun as opposed to the 130mm cannon of the IS-7 and the Object 705A, it still isn't very well suited for long range sniping and if you miss a shot it can be a painful experience. In addition, the tank does not have the speed and maneuverability to get itself into position quickly and relocate if needed. These drawbacks largely restrict the efficiency of the IS-4 to medium and short range brawler-type combat. However, due to the low vertical profile of the tank, it enjoys a somewhat better camouflage rating and can utilize many forms of cover much more effectively - peek out, fire a shot at the enemy, then dive back into safety. But due to its average gun handling, it will require a few seconds to fully aim or risk a hard miss otherwise. All of the above points demonstrate the IS-4 for what it currently is - a Jack-of-All-Trades tank, permitting its driver greater versatility at the expense of any exceptional capabilities.


The IS-4 marks the end of its Soviet heavy line.

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

VIII 122 mm D-25T 175/217/61 390/390/530 5.45 0.46 2.9 2590 125140
X 122 mm M62-T2 258/340/68 440/440/530 5 0.38 2.9 3397 335000

Ico_turret_alpha.png

Turrets

Tier Turret Turret Armor (front/sides/rear)
(mm)
Turret Traverse Speed
(deg/s)
View Range
(m)
Weight
(kg)
Price
(Credits)

X IS-4M 250/200/170 22 400 14200 61100

Ico_engine_alpha.png

Engines

Tier Engine Engine Power
(hp)
Chance of Fire on Impact
(%)
Weight
(kg)
Price
(Credits)

X V-12 750 15 1024 128000

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т)
Traverse Speed
(гр/сек)
Rmin Weight
(kg)
Price
(Credits)

X IS-4M 66.3 26 B/2 11000 61350

Ico_radio_alpha.png

Radios

Tier Radio Signal Range
(м)
Weight
(kg)
Price
(Credits)

X 10RK-26 720 160 51600


Compatible Equipment

Vertical Stabilizer Mk 2 Heavy Spall Liner Camouflage Net Fill Tanks with CO2 Coated Optics Stabilizing Equipment System Experimental Optics Wear-Resistant Gun Laying Drive Venting System Innovative Loading System Extended Spare Parts Kit Enhanced Gun Laying Drive Enhanced Torsion Bars 5+ t Class Cyclone Filter Improved Ventilation Class 3 Large-Caliber Tank Gun Rammer Binocular Telescope Toolbox "Wet" Ammo Rack Class 2 

Compatible Consumables

Stabilizer Greasing Automatic Fire Extinguisher Natural Cover Optical Calibration Aim Tuning Experienced Firefighters Manual Fire Extinguisher Vent Purge Large First Aid Kit Large Repair Kit Duty Comes First Lend-Lease Oil Shell Organizer Orderly Ammo Rack Focus on Target Extra Combat Rations Removed Speed Governor Increased Focus Small First Aid Kit Small Repair Kit Gearbox Intricacy Steady Hand Pre-Battle Maintenance Combat Course 


Player Opinion

Pros and Cons

Pros:


  • Good overall armor layout with a strong turret front and a well rounded hull. Strong side armor is good for side-scraping
  • Acceptable health pool (2500), the biggest of the USSR tech tree
  • Lower vertical profile enables superior utilization of most forms of cover
  • Acceptable alpha damage and accuracy, with good HEAT penetration (same gun as ST-I)


Cons:


  • Poor Overall Mobility
  • Weak frontal hull armor even when angled. Driver will be frequently knocked out
  • Sub-Par Gun Handling and DPM for its Tier
  • Weak turret roof armor which is difficult to hide
  • Overall low in-game performance in its current state. Can be somewhat frustrating to play


Performance

If played right, the IS-4 can do a decent job. It is best played as a front line support, using its side hull armor to try to negate damage for the team and forcing a breakthrough when the enemy team's defensive efforts falter. The DPM isn't anything to write home about, but it gets the job done.

When angled, the frontal armor can protect from most medium and heavy tank AP shells. With the addition of the HD model, spare track links in the front lower plate provides 20mm more off armor, making it better protected than upper plate above it.

The IS-4 excels in positions on maps where it can reverse angle and is sheltered from artillery. It has 6 degrees of gun depression, which limit its ability to hull down. So the player is advised to seek out even terrain obstacles such as low walls in order for the tank to maximize protection by revealing only it's turret. The excellent turret armor, while not exactly impervious, can still be very difficult to hit and penetrate at a distance.

It is advised to carry the crew from the ST-I over to the IS-4 so that you have a good crew to start with. The first skill all of your crew members should learn is Repair because should your tracks get blown off, you will want to move out of the line of fire as quickly as possible instead of sitting in the open where artillery can shell you. Afterwards, especially in this tier, the Sixth Sense skill is essential for your Commander and should be researched immediately after the Repair skill. You do not want to be left unknowing if your tank is spotted because once artillery zeroes in on your position, the low speed and maneuverability of this tank will ensure that it's already too late to move. In the hands of an experienced player, the IS-4's weaknesses can be negated relatively easily and it's versatility will allow you to adapt to a wide range of situations depending on what is demanded at the moment. Practice angling your armor, finding appropriate cover and sidescrape as much as you can to maximize all the effective points of the tank and win the day for your team.


Early Research

It's impossible to advance from the ST-I without researching the improved gun, so the IS-4 should instantly arrive as an elite tank.


Suggested Equipment


Improved VentilationTank Gun Rammer Vertical Stabilizer Spall Liner 


Gallery

Historical Info

Originally developed in competition with the IS-3, the IS-4 was similarly an extensive redesign of the IS-2. The hull was lengthened, with an extra set of road wheels added and an improved engine. Both the hull and turret were up-armored. Several alternative armaments were explored in paper studies, but ultimately the IS-2's original 122mm gun was retained. An effort was also made to incorporate technical data derived from study of the German wartime Panzer V Panther tank, which influenced the layout of the IS-4's engine cooling system. The tank was approved for mass production in 1948, but due to disappointing speed and mobility, only 200 were manufactured. Most of these were transferred to the Russian Far East in 1950, in preparation for the planned Soviet intervention in the Korean War. When this operation was aborted, the tanks nevertheless remained stationed in the region until their decommissioning in the 1960's.



Historical Gallery

Historical Accuracy Errata

The following are consensus errors or inconsistencies which have been identified with the configuration of the vehicle in question and conflict with information available on the public record. The causes for these divergences in the game are normally not disclosed and may be rooted in game balance.

*Like many soviet tanks in game the IS-4 has increased gun depression. In reality it had -3° instead of -6°
  • The IS-4 was never equipped with the M62 122mm cannon although the gun itself was designed to be able to fit all D-25T mounts


Sources and External Links

USSR
Light Tanks IMS-1 IIBT-2 IIT-45 IIT-26 IIT-60 IITetrarch IIIBT-7 IIIBT-SV IIILTP IIIM3 Light IIIBT-7 artillery IIIT-127 IIIT-46 IIIT-70 IVA-20 IVT-80 IVValentine II VT-50 VIMT-25 VIILTG VIIILTTB IXT-54 ltwt. XT-100 LT
Medium Tanks IIIT-29 IVA-32 IVT-28E with F-30 IVT-28 VMatilda IV VT-34 shielded VT-34 VIA-43 VIT-34-85M VIT-34-85 Rudy VILoza's M4-A2 Sherman VIT-34-85 VIIA-44 VIIKV-13 VIIT-43 VIIT-44-122 VIIIObject 416 VIIIT-54 first prototype VIIIT-44-100 (B) VIIIT-44-100 (R) VIIISTG VIIISTG Guard VIIIT-44 IXObject 430 Version II IXObject 430 IXT-54 XObject 140 XObject 907 XT-22 medium XK-91 XObject 430U XT-62A
Heavy Tanks VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 VIKV-2 (R) VIKV-85 VIT-150 VIIIS VIIKV-3 VIIKV-122 VIIIS-2 VIIIIS-3 VIIIIS-6 VIIIKV-5 VIIIKV-4 VIIIIS-5 (Object 730) VIIIIS-3A VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U VIIIIS-M IXT-10 IXObject 257 IXObject 705 IXST-I XIS-4 XIS-7 XObject 260 XObject 705A XObject 277 XObject 279 early
Tank Destroyers IIAT-1 IIISU-76M IIISU-76I IVSU-85B VSU-85 VSU-85I VISU-100 VISU-100Y VIIISU-122S VIISU-152 VIISU-100M1 VIISU-122-44 VIIIISU-152 VIIIISU-130 VIIISU-101 IXObject 704 IXObject 263 XObject 268 XObject 268 Version 4
Self-Propelled Artillery IISU-18 IIISU-26 IVSU-5 VSU-122A VISU-8 VIIS-51 VIISU-14-1 VIIISU-14-2 IX212A XObject 261
Heavy Tanks
USA VT14 VT1 Heavy Tank VIM6 VIIT29 VIIIChrysler K GF VIIIT26E5 VIIIM6A2E1 VIIIT32 VIIIT34 VIIIT34 B IXM103 XT110E5 XT57 Heavy Tank
UK VChurchill I VExcelsior VIChurchill VII VITOG II* VIIBlack Prince VIIFV201 (A45) VIIICaernarvon VIIICaernarvon Action X IXConqueror XFV215b XSuper Conqueror
Germany IVPz.Kpfw. B2 740 (f) IVDurchbruchswagen 2 VVK 30.01 (H) VITiger 131 VIVK 36.01 (H) VIIVK 45.03 VIITiger I VIITiger (P) VIIIVK 100.01 (P) VIIIVK 168.01 (P) VIIIVK 168.01 Mauerbrecher VIIILöwe VIIITiger II VIIIVK 45.02 (P) Ausf. A IXE 75 IXMäuschen IXVK 45.02 (P) Ausf. B XE 100 XPz.Kpfw. VII XMaus XVK 72.01 (K)
France IVB1 VBDR G1 B VIARL 44 VIIAMX M4 mle. 45 VIIIAMX 50 100 VIIIAMX M4 mle. 49 VIIIAMX 65 t VIIISomua SM VIIIFCM 50 t IXAMX 50 120 IXAMX M4 mle. 51 XAMX 50 B XAMX M4 mle. 54
USSR VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 VIKV-2 (R) VIKV-85 VIT-150 VIIIS VIIKV-3 VIIKV-122 VIIIS-2 VIIIIS-3 VIIIIS-6 VIIIKV-5 VIIIKV-4 VIIIIS-5 (Object 730) VIIIIS-3A VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U VIIIIS-M IXT-10 IXObject 257 IXObject 705 IXST-I XIS-4 XIS-7 XObject 260 XObject 705A XObject 277 XObject 279 early
China VIIIS-2 VIIIWZ-111 VIIIWZ-111 Alpine Tiger VIII110 VIII112 IXWZ-111 model 1-4 X113 XWZ-111 model 5A
Japan IIIType 91 Heavy IVType 95 Heavy VO-I Experimental VIHeavy Tank No. VI VIO-I VIIO-Ni VIIIO-Ho IXType 4 Heavy XType 5 Heavy
Czechoslovakia
Sweden VIIIEmil I IXEmil II XKranvagn
Italy
Poland VII45TP Habicha VIII50TP prototyp VIII53TP Markowskiego IX50TP Tyszkiewicza X60TP Lewandowskiego