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

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== Description ==
 
== Description ==
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''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. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.''
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The '''20-K (45mm)''' is equipped on a number of rank 1 Russian tanks. It is a decent gun for its rank, and still is useful in up-tiers due to its high-penetrating APCR shell.
  
 
=== Vehicles equipped with this weapon ===
 
=== Vehicles equipped with this weapon ===
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== General info ==
 
== General info ==
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''Tell us about the tactical and technical characteristics of the cannon or machine gun.''
 
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=== Available ammunition ===
 
=== Available ammunition ===
 
<!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' -->
 
<!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' -->
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=== Comparison with analogues ===
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=== Shell types: ===
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''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.''
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* '''BR-240:''' APHEBC - This should be the main ammo type that you use, as it deals the most damage because of its explosive filler.
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* '''BR-240P:''' APCR - This shell should only be used against more heavily armoured targets that the '''BR-240''' cannot penetrate.
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* '''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.
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* '''O-243:''' HE - Carry only very few of these. They are useless against anything other than unarmored AA vehicles.
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=== Comparison with analogues: ===
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Germany - [[KwK 38 (50 mm)|50 mm KwK 38]]
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USA - [[M6 (37 mm)|37 mm M6]]
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Great Britain - [[Ordnance QF 6-pounder Mk.III (57 mm)|57 mm OQF 6-pounder Mk.III]]
  
 
== Usage in battles ==
 
== Usage in battles ==
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''Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.''
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The '''20-K (45mm)''' is a decent gun for its rank. In down-tiers, it is a very effective and lethal weapon, and can take out most tanks with 1~2 shots. However, in up-tiers, it will be more difficult to take out tanks because of the relatively small caliber. 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 and cons ===
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''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.''
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'''Pros:'''
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* Decent penetration
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* Quick reload
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* Has access to APCR with 104mm of penetration at point-blank
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* Shells have a medium-high velocity, makes aiming easier
  
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'''Pros:'''
 
 
*
 
*
  
 
'''Cons:'''
 
'''Cons:'''
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* Due to the small caliber, post-penetration effects are bad
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* APHEBC rounds will have trouble
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*
 
*
  
 
== History ==
 
== History ==
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''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: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.''
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The '''20-K (45mm)''' was installed in tanks under the name 45 mm tank gun model 1932 (20-K). In 1934, the gun was improved with a semi-automatic breech instead of the original quarter-automatic version. Other changes were in the elevation mechanism and the recoil system. It was used on a wide variety of Soviet tanks and fired the same ammunition as the anti-tank version. The gun was later improved into the 45 mm tank gun model 1938, which had an electric firing system and a TOS stabilized (in vertical plane only) gun sight, allowing for accurate fire while the tank was in motion. The gyro stabilizer was removed from the design in 1941 due to inexperienced tank crews not activating the stabilizer. During 1941-42, some surplus M1938 barrels were fitted to trailer carriages to replace the losses of anti-tank guns suffered in the opening stages of Operation Barbarrosa. Although the Russian designation for these guns is not known, the Germans gave captured guns the designation '''4.5 cm Pak 184/6(r)'''.
  
 
== Media ==
 
== Media ==
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== See also ==
 
== See also ==
 
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 
''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;''
 
* ''reference to the article about the variant of the cannon/machine gun;''
 
* ''references to approximate analogues by other nations and research trees.''
 
* ''references to approximate analogues by other nations and research trees.''
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== External links ==
 
== External links ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
 +
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
 
* ''encyclopedia page on the weapon;''
 
* ''encyclopedia page on the weapon;''

Revision as of 02:42, 22 April 2020

Description

The 20-K (45mm) is equipped on a number of rank 1 Russian tanks. It is a decent gun for its rank, and still is useful in up-tiers 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
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

Available ammunition

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 69 68 59 50 42 35
BR-240P APCR 104 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°

Shell types:

  • 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 unarmored AA vehicles.

Comparison with analogues:

Germany - 50 mm KwK 38

USA - 37 mm M6

Great Britain - 57 mm OQF 6-pounder Mk.III

Usage in battles

The 20-K (45mm) is a decent gun for its rank. In down-tiers, it is a very effective and lethal weapon, and can take out most tanks with 1~2 shots. However, in up-tiers, it will be more difficult to take out tanks because of the relatively small caliber. 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 104mm of penetration at point-blank
  • Shells have a medium-high velocity, makes aiming easier

Cons:

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

History

The 20-K (45mm) was installed in tanks under the name 45 mm tank gun model 1932 (20-K). In 1934, the gun was improved with a semi-automatic breech instead of the original quarter-automatic version. Other changes were in the elevation mechanism and the recoil system. It was used on a wide variety of Soviet tanks and fired the same ammunition as the anti-tank version. The gun was later improved into the 45 mm tank gun model 1938, which had an electric firing system and a TOS stabilized (in vertical plane only) gun sight, allowing for accurate fire while the tank was in motion. The gyro stabilizer was removed from the design in 1941 due to inexperienced tank crews not activating the stabilizer. During 1941-42, some surplus M1938 barrels were fitted to trailer carriages to replace the losses of anti-tank guns suffered in the opening stages of Operation Barbarrosa. Although the Russian designation for these guns is not known, the Germans gave captured guns the designation 4.5 cm Pak 184/6(r).

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  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)

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