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IS-4

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IS-4

AnnoR90_IS_4M.png
Battle Tier
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Overview
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Well, the ones further down, of course.
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[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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1895.4

Standard Gun

Using Shell Type 1 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

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: 2575.8
50% Crew: 2077.6
75% Crew: 2379.7
100% Crew: 2687.1
100% Crew
Vents: 2745.4
Rammer: 2983.9
Both: 3052.8
Both and BiA: 3121.7
Both and Max Crew %: 3254.2

Advantageous Damage Per Minute
First-shot DPM: 3105.8
50% Crew: 2607.6
75% Crew: 2909.7
100% Crew: 3217.1
100% Crew
Rammer: 3513.9
Vents: 3275.4
Both: 3582.8
Both and BiA: 3651.7
Both and Max Crew %: 3784.2

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

annoIS-4.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.

The IS-4 is a versatile tank possessing a good gun, thick sloped armor and a significantly lower vertical profile than many other Tier X Heavy Tanks. These are opposed by its somewhat low speed and agility. When armed with the 122mm M62-T2 gun, it becomes a fearsome opponent, capable of belting out generous amounts of damage. The IS-4 also trades the frontal armor of its predecessor, the ST-I, in exchange for better side armor and slightly improved mobility. It sports better shell penetration and rate of fire but is far from being as nimble as its counterpart, the IS-7, with the IS-4 feeling very sluggish and slow in comparison.

While its frontal hull armor is thinner than the armor of comparable Tier X Heavy Tanks, it is slightly angled and enjoys a much smaller lower glacis plate which can prove to be surprisingly resilient to damage. This tank should always be angled and used in hull-down or side-scrape position to maximize the armor protection.

Keep in mind that you are a medium and close range fighter, not a sniper. While your best gun is more capable than the 130mm S-70 naval cannon of the IS-7, it still isn't the best suited for long range sniping and if you miss a shot it can be a painful experience. In addition, you do not have the speed and maneuverability to get yourself into position quickly and relocate if needed. However, due to the low vertical profile of this tank, you enjoy 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. The good side armor also makes the IS-4 very proficient at side scraping. Generally, it is more well-rounded than the IS-7, but does not have any extremely strong points. A Jack-of-All-Trades tank, permitting it's 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 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

Automatic Fire Extinguisher Manual Fire Extinguisher Large First Aid Kit Large Repair Kit Lend-Lease Oil Extra Combat Rations Removed Speed Governor Small First Aid Kit Small Repair Kit 


Player Opinion

Pros and Cons

Pros:


  • Excellent armor profile - good turret armor with well armored hull with sloped armor plating and spaced armour.
  • Much better Health Pool for a Tier X Heavy Tank unlike the IS-7
  • As of the HD model update, lower glacis plate is no longer a weak spot.
  • Lower vertical profile enables superior utilization of most forms of cover.


Cons:


  • Very low mobility - due to slow speed one of the most favored targets for artillery
  • Thinner frontal armor than most Tier X Heavy Tanks. Driver injury from frontal shots is prevalent and will occur often
  • Sub-par gun handling and somewhat lacking in DPM
  • Generally unimpressive in any single aspect.
  • Top turret can be easily penetrated if you get shots from above.


Performance

If played right, the IS-4 can be a feared and respected tank. Despite a weak point being the tank's mobility, the IS-4 more than makes up for it with a gun which deals decent damage and, combined with its sloped armor, makes the IS-4 quite a well rounded tank. It is best played as a front line brawler, using its armor 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 guns, if premium ammunition is not in use. With the addition of the HD model, spare track links in the front lower plate provide approximately 20mm more protection, making it partially 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 gives it limited 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, is still 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 


External Reviews and Opinions

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

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 IVA-32 IVT-28E with F-30 IVT-28 VMatilda IV VT-34 VIA-43 VIT-34-85M VIT-34-85 Rudy VIT-34-85 VIIA-44 VIIKV-13 VIIT-43 VIIT-44-122 VIIIObject 416 VIIIT-54 first prototype VIIIT-44-100 (R) VIIIT-44 IXObject 430 Version II IXT-54 XObject 140 XObject 430 XObject 907 XT-22 medium XT-62A
Heavy Tanks VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 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 IXT-10 IXST-I XIS-4 XIS-7 XObject 260
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 IXSU-122-54 XObject 263 XObject 268
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 VIIIT26E5 VIIIM6A2E1 VIIIT32 VIIIT34 VIIIT34 B IXM103 XT110E5 XT57 Heavy Tank
UK VChurchill I VExcelsior VIChurchill VII VITOG II* VIIBlack Prince VIIFV201 (A45) VIIICaernarvon IXConqueror XFV215b
Germany IVPz.Kpfw. B2 740 (f) IVDurchbruchswagen 2 VVK 30.01 (H) VIVK 36.01 (H) VIIVK 45.03 VIITiger I VIITiger (P) VIIIVK 100.01 (P) VIIILöwe VIIITiger II VIIIVK 45.02 (P) Ausf. A IXE 75 IXMäuschen IXVK 45.02 (P) Ausf. B XE 100 XMaus XVK 72.01 (K) XPz.Kpfw. VII
France IVB1 VBDR G1 B VIARL 44 VIIAMX M4 mle. 45 VIIIAMX 50 100 VIIIAMX M4 mle. 49 VIIIFCM 50 t IXAMX 50 120 XAMX 50 B
USSR VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 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 IXT-10 IXST-I XIS-4 XIS-7 XObject 260
China VIIIS-2 VIIIWZ-111 VIII110 VIII112 IXWZ-111 model 1-4 X113
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