20-K (45 mm)

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Description

Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Make an air or ground vehicles list on which this weapon is installed in our game.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
BT  BT-5 mod. 1933 · RBT-5 · BT-7 mod. 1937
T-26  T-26 mod. 1939 · T-26 (1st Gv.T.Br.) · T-26E
T-50  T-126(SP) · T-50
Other  SMK · T-35 · T-70 · T-80

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

Available shells

Penetration statistics
Ammunition Type of
warhead
Penetration in mm @ 0° Angle of Attack
10m 100m 500m 1000m 1500m 2000m
BR-240 APHEBC 68 66 58 49 41 35
O-240 HE 4 4 4 4 4 4
BR-240SP AP 72 70 61 51 43 37
BR-240P APCR 103 94 64 40 21 17
Shell details
Ammunition Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay

in m:

Fuse sensitivity

in mm:

Explosive Mass in g
(TNT equivalent):
Normalization At 30°
from horizontal:
Ricochet:
0% 50% 100%
BR-240 APHEBC 760 1.43 1.2 15 32.3 +4° 48° 63° 71°
O-240 HE 343 2.15 0.4 0.3 118 +0° 79° 80° 81°
BR-240SP AP 757 1.43 N/A N/A N/A -1° 47° 60° 65°
BR-240P APCR 985 0.85 N/A N/A N/A +1.5° 66° 70° 72°

Comparison with analogues

Give a comparative description of cannons/machine guns, that have firepower equal to these type of weapons.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against the main opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarize and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

Cons:

History

Examine the history of the creation and combat usage of this weapon. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.

Media

An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the article about the variant of the cannon/machine gun;
  • references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on weapon;
  • other literature.


USSR tank cannons
20 mm  TNsh
30 mm  2A42
45 mm  20-K
57 mm  Ch-51M · ZiS-2 · ZiS-4 · ZiS-4M
73 mm  2А28
76 mm  1902/30 · D-56-TS · F-32 · F-34 · F-96 · KT-28 · L-10 · L-11 · ZiS-3 · ZiS-5
85 mm  D-5S · D-5T · D-58 · D-70 · F-30 · Type 62-85TS · ZiS-S-53
100 mm  D-10S · D-10T · D-10T2S · D-50 · LB-1
107 mm  ZiS-6
115 mm  U-5TS
122 mm  A-19 · D-25S · D-25T · D-25-44T · D-30T · D-49 · M-30 · M-62-T2S
125 mm  2A26 · 2A46M · 2A46M-1
130 mm  B-13 · C-70
152 mm  M-10T · M-64 · M-69 · ML-20S