20-K (45 mm)

From War Thunder Wiki
Revision as of 15:47, 16 January 2021 by DnaGonite (talk | contribs) (Vehicles equipped with this weapon: Updated)

(diff) ← Older revision | Approved revision (diff) | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Description

The 20-K (45 mm) is equipped on a number of rank I Russian tanks. It is a decent gun for its rank, and can still be useful in uptiers due to its high-penetrating APCR shell.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Light tanks 
BT-5  BT-5 · RBT-5
BT-7  BT-7 · BT-7 TD
T-26  T-26 · T-26 (1st Gv.T.Br.) · ␗T-26 · T-26 No.531 · T-26E
Other  BA-11 · T-50 · T-70 · T-80 · T-126
Heavy tanks  SMK · T-35

General info

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

Available ammunition

  • BR-240: APHEBC - This should be the main ammo type that you use, as it deals the most damage because of its explosive filler.
  • BR-240P: APCR - This shell should only be used against more heavily armoured targets that the BR-240 cannot penetrate.
  • BR-240SP: AP - It is recommended to avoid this kind of shell as it is inferior in most aspects compared to the BR-240P ammo.
  • O-243: HE - Carry only very few of these. They are useless against anything other than unarmoured AA vehicles.
Penetration statistics
Ammunition Type of
warhead
Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
BR-240 APHEBC 70 68 59 50 42 35
BR-240P APCR 106 99 72 49 33 23
BR-240SP AP 73 71 62 52 44 37
O-243 HE 4 4 4 4 4 4
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
Mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive Mass
(TNT equivalent) (g)
Normalisation at 30°
from horizontal
Ricochet
0% 50% 100%
BR-240 APHEBC 760 1.43 1.2 9.0 29.3 +4.0° 48° 63° 71°
BR-240P APCR 1,070 0.85 N/A N/A N/A +1.5° 66° 70° 72°
BR-240SP AP 757 1.43 N/A N/A N/A -1.0° 47° 60° 65°
O-243 HE 343 2.15 0.4 0.3 118 0.0° 79° 80° 81°

Comparison with analogues

Usage in battles

The 20-K (45 mm) is a decent gun for its rank. In downtiers, it is a very effective and lethal weapon, and can take out most tanks with 1-2 shots. However, in uptiers, it will be more difficult to take out tanks because of the relatively small calibre. However, this doesn't mean that you are useless. The APCR round is capable of penetrating most rank II vehicles, however the post-penetration damage is poor due to the lack of an explosive filler.

Pros and cons

Pros:

  • Decent penetration
  • Quick reload
  • Has access to APCR with 104 mm of penetration at point-blank
  • Shells have a medium-high velocity, makes aiming easier

Cons:

  • Due to the small calibre, post-penetration effects are bad
  • APHEBC rounds will have trouble

History

Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon 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></ref>, as well as adding them at the end of the article with <references />.

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 the weapon;
  • other literature.


USSR tank cannons
20 mm  TNSh
30 mm  2A42 · 2A72 · AG-30
45 mm  20-K
57 mm  Ch-51M · ZIS-2 · ZIS-4 · ZIS-4M
73 mm  2A28
76 mm  1902/30 · 3-K · D-56TS · 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 · ZIS-S-53
100 mm  2A48 · 2A70 · D-10S · D-10T · D-10T2S · D-50 · LB-1
107 mm  ZIS-6
115 mm  U-5TS
122 mm  A-19 · D-25-44T · D-25S · D-25T · D-30T · D-49 · M-30 · M-62-T2S
125 mm  2A26 · 2A46M · 2A46M-1 · 2A46M-5
130 mm  B-13 · C-70 · M-65
152 mm  M-10T · M-64 · M-69 · ML-20S
  Foreign:
37 mm  M5 (USA)
50 mm  KwK L/42 (Germany)
57 mm  6pdr OQF Mk.III (Britain) · M1 (USA)
75 mm  KwK42 (Germany) · M2 (USA)
76 mm  M1 (USA)
85 mm  Type-62-85-TC (China)

China tank cannons
37 mm  M6 (USA)
45 mm  20-K (USSR)
47 mm  Type 1 (Japan)
57 mm  Type 97 (Japan) · ZIS-2 (USSR)
73 mm  2A28 (USSR)
75 mm  M2 Howitzer (USA) · M3 (USA) · M6 (USA)
76 mm  D-56T (USSR) · F-34 (USSR) · M1 (USA) · M7 (USA) · ZIS-3 (USSR)
85 mm  Type-62-85-TC · ZIS-S-53 (USSR)
90 mm  M3 (USA) · M41 (USA)
100 mm  D-10S (USSR) · Type 59 · Type 69
105 mm  M68 (USA) · M68A1 (USA) · Type 83 · ZPL94
115 mm  U-5TS (USSR)
120 mm  PTZ89
122 mm  A-19 (USSR) · D-25T (USSR)
125 mm  Type 88C · ZPT98
152 mm  ML-20S (USSR)