Strv m/31

Strv m/31

BT-42

Strv m/31

BT-42

Sweden

I Rank

Battle rating:

AB	RB	SB
1.0	1.0	1.0

Class:

Light tank

Research:Free

Purchase:Free

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Description

The Stridsvagn m/31 is a rank I Swedish light tank with a battle rating of 1.0 (AB/RB/SB). It was introduced in Update 1.97 "Viking Fury".

General info

Survivability and armour

Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.

Armour	Front (Slope angle)	Sides	Rear	Roof
Hull	14 mm (59°) Upper Glacis 24 mm (31°) Lower Glacis 24 mm (1°) Machine Gun Port and Upper Hull Front 14 mm (35°-46°) Driver's Hatch 14 mm (39°) Machine Gunner's Hatch	24 mm	8 mm Upper 20 mm Lower	8 mm Front and Rear 5 mm Middle
Turret	24 mm (14°-15°) Turret front 24 mm (1°) Gun mantlet	24 mm	24 mm	8 mm

Mobility

Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.

Game Mode	Max Speed (km/h)		Weight (tons)	Engine power (horsepower)		Power-to-weight ratio (hp/ton)
	Forward	Reverse		Stock	Upgraded	Stock	Upgraded
Arcade	47	21	11.5	310	286	26.96	24.87
Realistic	43	19		177	150	15.39	13.04

Armaments

Main armament

Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: {{main|Name of the weapon}}. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.

37 mm kan m/38					Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Stock	Full	Expert	Aced
Arcade	127	-10°/+20°	±180°	N/A	15.2	__.__	__.__	__.__	__.__	4.1	_.__	_.__	_.__
Realistic					9.5	__.__	__.__	__.__	__.__

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
3,7 cm slpprj m/49	APDS	105	103	97	89	82	75
slpgr m/39	APBC	55	51	37	26	17	12
slpprj m/38	APBC	59	55	41	28	19	13

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%
3,7 cm slpprj m/49	APDS	1,150	0.71	N/A	N/A	N/A	75°	78°	80°
slpgr m/39	APBC	800	0.74	1.2	9.0	15	47°	60°	65°
slpprj m/38	APBC	785	0.74	N/A	N/A	N/A	47°	60°	65°

Ammo racks

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	5th rack empty	6th rack empty	Visual discrepancy
127	111 (+16)	67 (+60)	45 (+82)	0 (+127)	__ (+__)	__ (+__)	__

Optics

Strv m/31 Optics
	Default magnification	Maximum magnification
Main Gun optics	x1.8	x3.5
Comparable optics	___

Machine guns

The Strv m/31 is equipped with a 6.5 mm machine gun, nothing out of the ordinary. It is useful for attacking AA vehicles or more lightly armoured foes.

6.5 mm ksp m/14-29
Mount	Capacity (Belt capacity)	Rate of fire (shots/minute)	Vertical guidance	Horizontal guidance
Coaxial	4,000 (250)	498	N/A	N/A

Usage in battles

The Strv m/31 is a light tank with poor armour. It shouldn't be used to rush into the heat of the battle or you will get knocked out very quickly. Its armour is inadequate, it can't even stop 12.7 mm HMG fire. Instead, it should be used to flank other enemy tanks, using your excellent speed to your advantage. The Strv m/31 has an unconventional armour layout. Its frontal area (eg.upper hull, glacis area) armour is very weak while the rear is really strong. This tank also has pretty good speed in reverse, so you can drive into battle facing backwards using your rear armour and engine to soak up damage.

Modules

Tier	Mobility		Protection	Firepower
I	Tracks		Parts	Horizontal Drive
II	Suspension	Brake System	FPE	Adjustment of Fire
III	Filters		Crew Replenishment	Elevation Mechanism
IV	Transmission	Engine		Artillery Support	slpgr m/39	3,7 cm slpprj m/49

Pros and cons

Pros:

• Access to APDS ammunition that can penetrate up to 105 mm
• APDS has high velocity, making it easy to aim at longer distances
• Very good reverse speed, it will save you in many situations
• Can bounce shots if angled properly

Cons:

• APDS has no explosive filler, multiple shots will be needed to finish off a tank
• Very weak stock shell (low penetration and post-pen damage)
• Armor is poor, even for a rank one reserve vehicle
• Acceleration and top speed is quite poor, will find itself getting outrun by most vehicles.

History

Describe the history of the creation and combat usage of the vehicle 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 vehicle and adding a block "/History" (example: https://wiki.warthunder.com/(Vehicle-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 />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Media

The Shooting Range #191 - Metal Beasts section at 00:50 discusses the Strv m/31.

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 series of the vehicles;
• links to approximate analogues of other nations and research trees.

External links

• [Devblog] Stridsvagn m/31