Difference between revisions of "20-K (45 mm)"

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* '''O-243:''' HE - Carry only very few of these. They are useless against anything other than unarmoured AA vehicles.
 
* '''O-243:''' HE - Carry only very few of these. They are useless against anything other than unarmoured AA vehicles.
  
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{| class="wikitable sortable" style="text-align:center" width="100%"
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{{:{{PAGENAME}}/Ammunition|BR-240, BR-240P, BR-240SP, O-243}}
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! colspan="8" | Penetration statistics
 
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|-
 
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! rowspan="2" data-sort-type="text" | Ammunition
 
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! rowspan="2" | Type of<br>warhead
 
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! colspan="6" | Penetration @ 0° Angle of Attack (mm)
 
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|-
 
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! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
 
−
|-
 
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| BR-240 || APHEBC || 70 || 67 || 58 || 47 || 39 || 32
 
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|-
 
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| BR-240SP || APBC || 73 || 70 || 60 || 50 || 41 || 34
 
−
|-
 
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| BR-240P || APCR || 106 || 98 || 72 || 48 || 33 || 22
 
−
|-
 
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| O-243 || HE || 4 || 4 || 4 || 4 || 4 || 4
 
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|-
 
−
|}
 
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{| class="wikitable sortable" style="text-align:center" width="100%"
 
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! colspan="10" | Shell details
 
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|-
 
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! rowspan="2" data-sort-type="text" | Ammunition
 
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! rowspan="2" | Type of<br>warhead
 
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! rowspan="2" | Velocity<br>(m/s)
 
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! rowspan="2" | Projectile<br>mass (kg)
 
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! rowspan="2" | Fuse delay<br>(m)
 
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! rowspan="2" | Fuse sensitivity<br>(mm)
 
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! rowspan="2" | Explosive mass<br>(TNT equivalent) (g)
 
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! colspan="3" | Ricochet
 
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|-
 
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! 0% !! 50% !! 100%
 
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|-
 
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| BR-240 || APHEBC || 760 || 1.43 || 1.2 || 9 || 29.26 || 48° || 63° || 71°
 
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|-
 
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| BR-240SP || APBC || 757 || 1.43 || N/A || N/A || N/A || 47° || 60° || 65°
 
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|-
 
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| BR-240P || APCR || 1,070 || 0.85 || N/A || N/A || N/A || 66° || 70° || 72°
 
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|-
 
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| O-243 || HE || 343 || 2.15 || 0.4 || 0.3 || 118 || 79° || 80° || 81°
 
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|-
 
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|}
 
  
 
=== Comparison with analogues ===
 
=== Comparison with analogues ===
Line 85: Line 45:
 
* Has access to APCR with 104 mm of penetration at point-blank
 
* Has access to APCR with 104 mm of penetration at point-blank
 
* Shells have a medium-high velocity, makes aiming easier
 
* Shells have a medium-high velocity, makes aiming easier
 +
* APHEBC are some of the best at rank 1
  
 
'''Cons:'''
 
'''Cons:'''
 
* Due to the small calibre, post-penetration effects are bad
 
* Due to the small calibre, post-penetration effects are bad
−
* APHEBC rounds will have trouble
+
* APHEBC rounds will have trouble against heavier foes
  
 
== History ==
 
== History ==

Latest revision as of 19:59, 9 October 2023

Description

The 45 mm 20-K is a Soviet tank cannon, equipped on a number of rank I 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 · BT-7M
T-26  T-26 · T-26 (1st Gv.T.Br.) · ␗T-26 · T-26 No.531 · T-26E · ▄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: APBC - 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 67 58 47 39 32
BR-240P APCR 94 87 64 43 29 20
BR-240SP APBC 73 70 60 50 41 34
O-240 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) 		Ricochet
0% 50% 100%
BR-240 APHEBC 760 1.43 1.2 9 29.26 48° 63° 71°
BR-240P APCR 985 0.85 - - - 66° 70° 72°
BR-240SP APBC 757 1.43 - - - 47° 60° 65°
O-240 HE 335 2.14 0.1 0.4 118 79° 80° 81°

Comparison with analogues

Give a comparative description of cannons/machine guns that have firepower equal to this weapon.

Usage in battles

The 45 mm 20-K 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
  • Short reload time
  • Has access to APCR with 104 mm of penetration at point-blank
  • Shells have a medium-high velocity, makes aiming easier
  • APHEBC are some of the best at rank 1

Cons:

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

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

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.


USSR tank cannons
20 mm  TNSh
30 mm  2A42 · 2A72 · AG-30
45 mm  20-K
57 mm  AU-220 · 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 · S-34
107 mm  ZIS-6
115 mm  U-5TS
122 mm  A-19 · D-25-44T · D-25S · D-25T · D-25TS · D-30T · D-49 · M-30 · M-62-T2S
125 mm  2A26 · 2A46 · 2A46M · 2A46M-1 · 2A46M-4 · 2A46M-5 · 2A46MS · 2A75 · D-126
130 mm  B-13 · C-70 · M-65
152 mm  2A33 · LP-83 · 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
30 mm  ZPL02 · ZPZ02
73 mm  Type 86
76 mm  M32K1
85 mm  Type 56 · Type 63
100 mm  PTP86 · Type 59 · Type 69 · Type 69-II · ZPL04
105 mm  88B-105T · Type 83 · WMA301 · ZPL94 · ZPL98A
120 mm  122TM · PTZ89
125 mm  Type 88C · Type 99A · ZPT98
130 mm  PL59A Gai
152 mm  PL66 Gai
  Foreign:
20 mm  KwK30 (Germany)
37 mm  M6 (USA)
45 mm  20-K (USSR)
47 mm  Type 1 (Japan)
57 mm  Type 97 (Japan) · ZIS-2 (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  ZIS-S-53 (USSR)
90 mm  M3 (USA) · M41 (USA)
100 mm  D-10S (USSR)
105 mm  M68 (USA) · M68A1 (USA)
115 mm  U-5TS (USSR)
122 mm  A-19 (USSR) · D-25T (USSR)
152 mm  ML-20S (USSR)

Sweden tank cannons
20 mm  Akan m/47D · Pvlvkan m/40
37 mm  kan m/38
40 mm  akan m/70B
57 mm  Pvkan m/43
75 mm  kan m/02 · kan m/41 · kan Strv 74 · lvkan m/37 A · pvkan m/43
84 mm  kan Strv 81
90 mm  kan Ikv 91
105 mm  kan Bofors · kan Ikv · kan m/44 · kan Strv 101 · L74
120 mm  automatkanon · CTG · kan Strv 121 · kan Strv 122
150 mm  fsthaub m/02
155 mm  kan m/60
  Foreign:
35 mm  Bushmaster 3 (USA)
73 mm  2A28 (USSR)
75 mm  M3 (USA)
88 mm  KwK43 (Germany)
105 mm  L/50 (Belgium) · L7A3 (Germany)
125 mm  2A46M-1 (USSR)
155 mm  CN98 (South Korea)
  Finland
37 mm  Psv.K/36
114 mm  Psv.H/18
  Foreign:
30 mm  Bushmaster 2 Mk.44 (USA)
45 mm  20-K (USSR)
75 mm  KwK40 L48 (Germany)
76 mm  D-56TS (USSR) · F-34 (USSR) · L-10 (USSR)
77 mm  OQF Mk.II (Britain)
84 mm  20pdr OQF Mk.I (Britain)
85 mm  ZIS-S-53 (USSR)
100 mm  D-10T (USSR) · D-10T2S (USSR)
105 mm  L/50 (Belgium)
120 mm  Rh120 L/44 (Germany) · Rh120 L/55 (Germany)
125 mm  2A46 (USSR)

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