Akan m/70B (40 mm)

Description

The 40 mm Akan m/70B is a Swedish autocannon based off the Bofors 40 mm L/70 used on Strf 9040 series of IFVs.

Vehicles equipped with this weapon

• Lvkv 9040C
• Strf 9040 BILL
• Strf 9040B
• Strf 9040C

General info

The Akan m/70B is an upgraded variant of the Bofors 40 mm L/60 with a higher RPM and is fielded with modern ammunition.

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
slpprj m/90	APFSDS	143	142	137	130	123	116
slsgr m/90	HE	11	11	9	8	6	5
kulsgr m/90	HE-VT*	11	11	9	7	6	5
slpprj m/01	APFSDS	170	168	162	154	146	138

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%
slpprj m/90	APFSDS	1,465	0.5	-	-	-	78°	80°	81°
slsgr m/90	HE	988	0.96	0.1	0.1	174.4	79°	80°	81°
slpprj m/01	APFSDS	1,495	0.53	-	-	-	78°	80°	81°

Proximity-fused shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Arming distance (m)	Trigger radius (m)	Explosive mass (TNT equivalent) (g)	Ricochet
									0%	50%	100%
kulsgr m/90	HE-VT*	1,015	0.88	0.1	0.1	500	4	190.8	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 Akan m/70B is a multi-purpose autocannon. Using APFSDS means that you can eliminate a well protected MBT, even from the front if a weak spot is penetrated, although flanking manoeuvres are better suited as the post-penetration damage is poor with APFSDS. Lighter targets such as IFVs and SPAAs will stand no chance against this autocannon with its fast fire rate and its APFSDS. The Akan m/70B is also equipped with HE-VT, able to deal with helicopters and against jets. Best to use HE-VT against aircraft proceeding on their attack run, and catching them off guard.

Pros and cons

Pros:

• Has access to APFSDS which can knock out any opponents it faces
• Has access to HE-VT which can deal with any helicopters and aircraft
• High rate of fire
• Good penetration for an autocannon
• High ammo count

Cons:

• Easy to go through the 24 stage ready rack
• Post-penetration damage with APFSDS is poor

History

By the end of World War II, the Bofors L/60 had proven itself to be an excellent design for an anti-aircraft autocannon. However, the post-war and early Cold War marked the dawn of the jet age. With aircraft achieving higher speeds, it became a challenge for the Bofors L/60 to take them down. In the late 1940s, the Bofors created the new Bofors L/70 which was adopted by the Swedish Army as the Lvakan m/48. However, Bofors would continue to work on improving the design, gradually increasing the rate of fire from 240 rounds per minute to 300 and later 330 rpm, and in the 1970s, they introduced proximity fuse ammunition which would be developed into the Akan m/70B. This specific variant of the Bofors L/70 was introduced for the CV90 series of infantry fighting vehicles which was mounted upside down to fit inside the turret and equipped with programmable shells capable of use with airburst, burrowing, impact or proximity fuses, as well as armour-piercing ammunition.

Media

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

See also

• Bofors (40 mm) (Family)
• Bofors L/70 Mk.1 (57 mm): An upscaled 57 mm variant with more firepower found on the Begleitpanzer 57.

External links

Paste links to sources and external resources, such as:

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

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)

Sweden anti-aircraft guns
7.62 mm	Ksp 58
20 mm	Akan m/45B · Lvakan m/40B
40 mm	Akan m/70B · Lvakan m/36 · Lvakan m/48
	Foreign
20 mm	Oerlikon 204 GK (Switzerland)
35 mm	Oerlikon KDA (Switzerland)
57 mm	S-68 (USSR)