Difference between revisions of "20F2 (20 mm)"

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== Description ==
 
== Description ==
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The '''GIAT Industries 20 mm F2''' (otherwise known as '''GIAT M693''') is a dual feed autocannon which fires the standard 20x139 mm munitions. It is a gas operated autocannon that has three firing modes, those being single shot, burst and safe. The gas system of the weapon operates via two vents on either side of the barrel, through which the gases push against the two pistons. While firing, the two pistons are pushed back, moving the struts backwards so that the breech block can move to the rear. In this way, all the firing forces are developed along the barrel centerline which maximizes accuracy.
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The '''GIAT Industries 20 mm F2''' (otherwise known as '''M693''') is a dual feed autocannon which fires the standard 20x139 mm munitions. It is a gas operated autocannon that has three firing modes, those being single shot, burst and safe. The gas system of the weapon operates via two vents on either side of the barrel, through which the gases push against the two pistons. While firing, the two pistons are pushed back, moving the struts backwards so that the breech block can move to the rear. In this way, all the firing forces are developed along the barrel centerline which maximizes accuracy.
 
  
 
=== Vehicles equipped with this weapon ===
 
=== Vehicles equipped with this weapon ===
 
<!-- ''List out vehicles that are equipped with the weapon.'' -->
 
<!-- ''List out vehicles that are equipped with the weapon.'' -->
  
 +
* {{Specs-Link|fr_amx_10m_acra}}
 
* {{Specs-Link|fr_amx_30_1972}}
 
* {{Specs-Link|fr_amx_30_1972}}
 
* {{Specs-Link|fr_amx_30_b2}}
 
* {{Specs-Link|fr_amx_30_b2}}
 
* {{Specs-Link|fr_amx_30_b2_brenus}}
 
* {{Specs-Link|fr_amx_30_b2_brenus}}
 +
* {{Specs-Link|fr_amx_32_105}}
 
* {{Specs-Link|fr_amx_32}}
 
* {{Specs-Link|fr_amx_32}}
 
* {{Specs-Link|fr_amx_40}}
 
* {{Specs-Link|fr_amx_40}}
  
 
== 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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<!-- ''Tell us about the tactical and technical characteristics of the cannon or machine gun.'' -->
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Main caliber of the weapon is the 20x139 mm bullet. The length of the autocannon is 2,600 mm, while the barrel itself is 100 calibers. The height of the autocannon was 260 mm and the weight was 71 kg. Rate of fire can be up to 900 rounds per minute.
+
 
 +
Main calibre of the weapon is the 20x139 mm bullet. The length of the autocannon is 2,600 mm, while the barrel itself is 90 calibres (1,800 mm). The height of the autocannon was 260 mm and the weight was 71 kg. Rate of fire can be up to 900 rounds per minute, with the penetration force of up to 57 mm.
  
 
=== 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)." -->
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<!-- ''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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* '''Default:''' {{Annotation|HEFI-T|High Explosive Fragmentation Incendiary Tracer}}{{-}}{{Annotation|HVAP-T|High Velocity Armour Piercing Tracer}}
  
 
=== Comparison with analogues ===
 
=== Comparison with analogues ===
−
''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.''
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<!-- ''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.'' -->
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 +
{| class="wikitable" style="text-align:center"
 +
! colspan="7" |Comparable cannons to 20F2
 +
|-
 +
!
 +
!Name
 +
!Year of Creation
 +
!Mass
 +
!Rounds Per Minute
 +
!Ammunition
 +
!Maximum Penetration
 +
|-
 +
|▀
 +
|[[MG 151 (20 mm)|20 mm MG 151/20]]
 +
| 1941
 +
| 42 kg
 +
| 600 - 750 RPM
 +
| 20 x 82 mm
 +
| 26 mm
 +
|-
 +
|▄
 +
|[[Hispano HS.9 (20 mm)|Hispano HS.9]]
 +
| 1933
 +
| 48 kg
 +
| 360 - 420 RPM
 +
| 20 х 110 mm
 +
| 26 mm
 +
|-
 +
|▄
 +
|[[Hispano 404 (20 mm)|Hispano 404]]
 +
| 1932
 +
| 49 kg
 +
| 700 - 750 RPM
 +
| 20 x 110 mm
 +
| 26 mm
 +
|-
 +
|▄
 +
|[[Hispano Mk.I (20 mm)|Hispano Mk.I]]
 +
| 1940
 +
| 49 kg
 +
| 700 - 750 RPM
 +
| 20 x 110 mm
 +
| 26 mm
 +
|-
 +
|▄
 +
|[[Hispano Mk.II (20 mm)|Hispano Mk.II]]
 +
| 1941
 +
| 50 kg
 +
| 600 - 850 RPM
 +
| 20 x 110 mm
 +
| 26 mm
 +
|-
 +
|▄
 +
|[[Hispano Mk.V (20 mm)|Hispano Mk.V]]
 +
| 1944
 +
| 38 kg
 +
| 700 - 750 RPM
 +
| 20 × 110 mm
 +
| 26 mm
 +
|-
 +
|▃
 +
|[[AN/M2 (20 mm)|AN/M2]]
 +
| 1942
 +
| 49 kg
 +
| 600 RPM
 +
| 20 × 110 mm
 +
| 33 mm
 +
|-
 +
|▂
 +
|[[ShVAK (20 mm)|ShVAK]]
 +
| 1936
 +
| 40 kg
 +
| 700 - 800 RPM
 +
| 20 × 99 mm
 +
| 27 mm
 +
|}
  
 
== Usage in battles ==
 
== Usage in battles ==
−
''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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<!-- ''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 20F2 shoots bullets that can pierce up to 57 mm of armour. This makes the 20F2 autocannons adequate enough to pierce trough most light vehicles with relative ease. However, if the angle is steep enough, the 20 mm bullets will just bounce and won't even scratch the enemy target, such as the [[BMP-2]]'s frontal armour. If one does not have a HEAT round loaded and fears that an APFSDS round might not cut it, they can resort to using their 20F2 to dispatch the light vehicle, as the 20 mm bullets have good spalling and will annihilate light vehicles within short bursts.
 +
 
 +
If one is dueling an MBT, the 20F2 can make short work of the hostile's cannon or tracks, rendering them unable to fight. If you are in a close quarters scenario or your main cannon is disabled, you can also try to penetrate the back armour, which in most cases leads to setting them ablaze if a fuel tank or the engine is struck, such as the [[Leopard I|Leopard 1]].
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
''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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<!-- ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' -->
  
 
'''Pros:'''
 
'''Pros:'''
  
−
*
+
* High fire rate
 +
* Shreds trough light vehicles and in some cases even MBTs, thanks to its 57 mm of penetration
 +
* It is attached to the mantlet, allowing the user to still use their main cannon with ease
 +
* Can damage or destroy modules relatively quickly
  
 
'''Cons:'''
 
'''Cons:'''
  
−
*
+
* Overheats fairly quick
 +
* Limited ammunition pool, ranging from 480 to 1,000 rounds in some tanks
 +
* Gives away the position of the user easily, as every round is also a tracer
 +
* It is fairly inaccurate at longer ranges
  
 
== History ==
 
== 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: <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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<!-- ''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>.'' -->
 +
The design of the '''M693''' is based on the earlier '''20 mm M621 autocannon'''. The main difference between the M693 and the M621 is, that the M693 differs in firing the more powerful 20 x 139 mm round and having a dual belt feed mechanism. The M621 main emphasis was lightness, while the M693 emphasis was just pure firepower. It entered service in the 1970's but the development began somewhere late 1960's. It was produced by the '''Groupement industriel des armements terrestres''' (otherwise known as '''GIAT'''). Thousands of these autocannons were produced.
 +
 
 +
Sometime in the 1980s, the companies '''Direction des Constructions Navales''' (otherwise known as '''DCN''') and GIAT were contracted to design the F2 20 mm cannon, which was basically the navalised version of the M693 that the French Army used and sold to export.
 +
 
 +
The navalised F2 20 mm cannons are used to this day by the French Navy.
  
 
== Media ==
 
== Media ==
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''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''
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<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
 +
 
 +
;Images
 +
<gallery mode="packed-hover" heights="200">
 +
File:AMX30.jpg|<small>AMX-30 with its 20F2 attached in the mantlet</small>
 +
</gallery>
  
 
== See also ==
 
== See also ==
−
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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<!-- ''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.'' -->
  
−
* ''reference to the article about the variant of the cannon/machine gun;''
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* [[AMX-50 Surblinde]] - Uses a different 20 mm autocannon, the MG151/20.
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* ''references to approximate analogues by other nations and research trees.''
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* [[R3 T20 FA-HS]] - Uses a 20 mm Oerlikon KAD autocannon
  
 
== External links ==
 
== External links ==
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''Paste links to sources and external resources, such as:''
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<!-- ''Paste links to sources and external resources, such as:''
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* ''topic on the official game forum;''
 +
* ''other literature.'' -->
  
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* ''topic on the official game forum;''
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* [http://www.army-guide.com/eng/product3589.html <nowiki>[Army Guide] The M693</nowiki>]
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* ''encyclopedia page on the weapon;''
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* [https://weaponsystems.net/system/1010-20mm+Giat+M693 <nowiki>[Weapon Systems] Parameters of the M693</nowiki>]
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* ''other literature.''
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* [http://spitfiresite.com/2010/04/spitfire-the-hispano-cannon.html <nowiki>[Spitfire Site] Information about Hispanos</nowiki>]
  
 
{{France tank cannons}}
 
{{France tank cannons}}
  
 
[[Category:Tank cannons]]
 
[[Category:Tank cannons]]

Latest revision as of 14:53, 28 October 2023

Description

The GIAT Industries 20 mm F2 (otherwise known as GIAT M693) is a dual feed autocannon which fires the standard 20x139 mm munitions. It is a gas operated autocannon that has three firing modes, those being single shot, burst and safe. The gas system of the weapon operates via two vents on either side of the barrel, through which the gases push against the two pistons. While firing, the two pistons are pushed back, moving the struts backwards so that the breech block can move to the rear. In this way, all the firing forces are developed along the barrel centerline which maximizes accuracy.

Vehicles equipped with this weapon

General info

Main calibre of the weapon is the 20x139 mm bullet. The length of the autocannon is 2,600 mm, while the barrel itself is 90 calibres (1,800 mm). The height of the autocannon was 260 mm and the weight was 71 kg. Rate of fire can be up to 900 rounds per minute, with the penetration force of up to 57 mm.

Available ammunition

  • Default: HEFI-T · HVAP-T

Comparison with analogues

Comparable cannons to 20F2
Name Year of Creation Mass Rounds Per Minute Ammunition Maximum Penetration
▀ 20 mm MG 151/20 1941 42 kg 600 - 750 RPM 20 x 82 mm 26 mm
▄ Hispano HS.9 1933 48 kg 360 - 420 RPM 20 х 110 mm 26 mm
▄ Hispano 404 1932 49 kg 700 - 750 RPM 20 x 110 mm 26 mm
▄ Hispano Mk.I 1940 49 kg 700 - 750 RPM 20 x 110 mm 26 mm
▄ Hispano Mk.II 1941 50 kg 600 - 850 RPM 20 x 110 mm 26 mm
▄ Hispano Mk.V 1944 38 kg 700 - 750 RPM 20 × 110 mm 26 mm
▃ AN/M2 1942 49 kg 600 RPM 20 × 110 mm 33 mm
▂ ShVAK 1936 40 kg 700 - 800 RPM 20 × 99 mm 27 mm

Usage in battles

The 20F2 shoots bullets that can pierce up to 57 mm of armour. This makes the 20F2 autocannons adequate enough to pierce trough most light vehicles with relative ease. However, if the angle is steep enough, the 20 mm bullets will just bounce and won't even scratch the enemy target, such as the BMP-2's frontal armour. If one does not have a HEAT round loaded and fears that an APFSDS round might not cut it, they can resort to using their 20F2 to dispatch the light vehicle, as the 20 mm bullets have good spalling and will annihilate light vehicles within short bursts.

If one is dueling an MBT, the 20F2 can make short work of the hostile's cannon or tracks, rendering them unable to fight. If you are in a close quarters scenario or your main cannon is disabled, you can also try to penetrate the back armour, which in most cases leads to setting them ablaze if a fuel tank or the engine is struck, such as the Leopard 1.

Pros and cons

Pros:

  • High fire rate
  • Shreds trough light vehicles and in some cases even MBTs, thanks to its 57 mm of penetration
  • It is attached to the mantlet, allowing the user to still use their main cannon with ease
  • Can damage or destroy modules relatively quickly

Cons:

  • Overheats fairly quick
  • Limited ammunition pool, ranging from 480 to 1,000 rounds in some tanks
  • Gives away the position of the user easily, as every round is also a tracer
  • It is fairly inaccurate at longer ranges

History

The design of the M693 is based on the earlier 20 mm M621 autocannon. The main difference between the M693 and the M621 is, that the M693 differs in firing the more powerful 20 x 139 mm round and having a dual belt feed mechanism. The M621 main emphasis was lightness, while the M693 emphasis was just pure firepower. It entered service in the 1970's but the development began somewhere late 1960's. It was produced by the Groupement industriel des armements terrestres (otherwise known as GIAT). Thousands of these autocannons were produced.

Sometime in the 1980s, the companies Direction des Constructions Navales (otherwise known as DCN) and GIAT were contracted to design the F2 20 mm cannon, which was basically the navalised version of the M693 that the French Army used and sold to export.

The navalised F2 20 mm cannons are used to this day by the French Navy.

Media

Images

  • AMX-30 with its 20F2 attached in the mantlet

See also

External links


France tank cannons
20 mm  20F2
25 mm  SA35 L/72
37 mm  SA18 L/21 · SA38 L/33
47 mm  SA34 L/30 · SA35 L/32 · SA37
75 mm  APX · APX Canon de 75 mm modèle 1897 · SA35 L/17 · SA44 · SA49 · SA50 L/57
90 mm  D.911 APX · CN90 F2 · CN90 F3 · CN90 F4 · D915 · DEFA F1 · SA45 · SA47
100 mm  SA47 L/58
105 mm  CN-105-F1 · Giat 105 G2 · Modele F2 · PzK M57
120 mm  GIAT CN120-25 G1 · GIAT CN120-26 F1 · SA46
142 mm  ACRA
155 mm  GCT F1 · Schneider 155 C · L'Obusier de 155 Modèle 1950
  Foreign:
15 mm  MG 151 (Germany)
20 mm  MG 151 (Germany)
30 mm  Bushmaster 2 Mk.44 (USA)
37 mm  M6 (USA)
40 mm  Bofors L/60 · QF 2-pounder (Britain)
75 mm  KwK42 (Germany) · M3 (USA) · M6 (USA)
76 mm  M7 (USA)
90 mm  M3 (USA)
105 mm  M4 (USA)

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