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IS-4
Photo: User:VORON SPb · Wikimedia Commons · CC BY-SA 3.0
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IS-4

Tanks · Russia · 1946
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IS-4

IS-4
IS-4 Photo: User:VORON SPb · Wikimedia Commons · CC BY-SA 3.0
* Absolute score — assessed within category · no era adjustment
Firepower
85
Protection
75
Mobility
60
Technology
50
Reliability
70
Crew Survivability
70
Operational Range
65
Logistics
60
Historical Performance
55
Strategic Impact
50
Origin Russia
CategoryTanks
EraEarly Cold War
In service1946–1949
Operators1 countries
Quantity200
Data Quality84%
MASS(Military Archive Scoring System)
67
Tanks MASS Rating
5/54
Early Cold War
62/563
All-Time
Tanks · 10 axes scored
Firepower
85
Protection
75
Mobility
60
Technology
50
Reliability
70
Crew Survivability
70
Operational Range
65
Logistics
60
Historical Performance
55
Strategic Impact
50
ⓘ Regardless of era, the same scoring system applies to all units in the tanks category.
01 / Overview
IS-4
Category
Country
Production
1946–1949
Quantity
200
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TANKS · EARLY COLD WAR
5
PERFORMANCE/PRICE
60
UNIT COST (2025 USD)
—
67
tanks category
ⓘ Performance/Price and MASS score are computed across all units in the tanks category, regardless of era.
02 / Specs & Design
◎General5MOD.5
  • Tank ClassificationHeavy Tank
  • GenerationEarly Cold War
  • Combat Weight59 t
  • Crew Size4
  • Service Entry Year1946
◈Firepower3MOD.3
  • Main Gun Calibre122 mm
  • Main Gun TypeRifled
  • Main Gun Length (Calibres)54
▣Protection3MOD.3
◇Mobility7MOD.7
  • Engine Power750 hp
  • Power-to-Weight Ratio13 hp/t
  • Fuel TypeDiesel
  • Transmission TypeManual
  • Suspension TypeTorsion Bar
  • Max Road Speed43 km/h
  • Operational Range (Road)100 km
◆Dimensions3MOD.3
  • Length (Hull)9.7 m
  • Width3.26 m
  • Height2.48 m
▤Electronics & Optics1MOD.1
⬢Production & Service1MOD.1
  • Years in Production3 year
03 / History
SERVICE LIFESPANRetired
  1. 1946Production started
  2. 1949Production ended
80
years in service
3
years in production
200
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE8terms
Type of internal combustion engine fuel, refined from crude oil.
A tank with heavy armor and firepower, prioritizing protection over mobility.
Manual: a tank transmission in which the driver selects gear changes manually, typically using a clutch pedal and gear lever to engage gears.
A fire control system relying on optical sights and manual input for aiming and range estimation without computer assistance.
A rifled gun has spiral grooves cut into its barrel.
Handheld or vehicle-mounted devices that release dense smoke to obscure vision, conceal movements, or screen friendly forces from enemy observation.
A torsion bar is a steel rod that resists twisting and serves as a spring in tank suspensions, with one end fixed to the hull and the other connected to a lever arm moving the road wheel.
Armour made by welding and rolling homogeneous steel plates.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Tanks entry →