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Germany
7.5cm Pak 40/2 Gw II(A,B,C,F) (Marder II)
Ordnance classification - SdKfz 131

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The 7.5cm Pak 40/2 Gw II(A,B,C,F) was designed in 1941, manufactured by FAMO, MAN and Daimler Benz based on the existing fully tracked PzKpfw II and was in use from 1942 to 1945.

Flag of World War 2 Germany
Photo of 7.5cm Pak 40/2 Gw II(A,B,C,F) (Marder II)
7.5cm Pak 40/2 Gw II(A,B,C,F)(Marder II) scale illustration

General Details
Specifications
Operational Date(s)1942 - 1945
Ordnance classificationSdKfz 131
Quantity Produced75
Weight10.8 tonne
Crew3
M.G's small1
M.G's large(>10mm)n/a
Length4.81 mtr
Width2.22 mtr
Height1.99 mtr
Engine Details/Performance
Max Road Speed25 mph
Max Cross Country Speed12 mph
Range Road119 miles
Range Cross Country47 miles
Fuel TypePetrol
Fuel Capacityunknown
Horse Power140 hp
Power/Weight12 hp/tonne
General Information
The 7.5cm Pak 40/2 Gw II(A,B,C,F) was designed in 1941, manufactured by FAMO, MAN and Daimler Benz based on the existing fully tracked PzKpfw II and was in use from 1942 to 1945.

The vehicle was powered by Maybach 'HL62TRM' petrol powerplant producing 140 HP which could drive the vehicle on roads at up to 25 mph with a range of about 119 miles before refuelling. Its cross country performance was good providing a max speed of about 12 mph and a range of about 47 miles.

It was armed with 1 light machine gun. Its main armament consisted of a 7.5cm Pak 40 L/46 which could penetrate 112 mm of flat plate at 800 metres


Armour Details
Turret
Frontn/a
Siden/a
Rearn/a
Topn/a
Superstructure
Front30mm@10°(30mm)
Side10mm@(10mm)
Rear10mm@(10mm)
Top10mm@90°(10mm)
Hull
Front35mm@13°(36mm)
Side15mm@(15mm)
Rear15mm@(15mm)
Top5mm@90°(5mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 36 mm - Minimum 5 mm



Weapon Details
Flag
7.5cm Pak 40 L/46
7.5cm Panzerabwehrkanone 40 L/46
(translates as Anti Tank Gun)
Blank
photo of 7.5cm Pak 40 L/46 from Wikipedia
History
This was an enlarged 5cm Pak 38 so looks very similar, but with improved performance especially against the Russian T34
ManufacturerRheinmetal-Borsig
Manufactured1941 - 1945
Calibre75mm
LengthL/46
Rate of Fire14 rpm
Number of Rounds 30
 
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
7.5cm Pzgr 39 L/48
(AP Armor Piercing)
75mm 6.8Kg 792M/Sec
Quoted Penetration 96mm @ 500mtr/30° ( ≈ 110mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.26 0.53 1.13 1.8 2.57 3.44 4.46
Penetration(mm@30°) 130 121 110 96 84 72 62 51
Penetration(mm@0°) 151 140 128 112 98 84 72 60
Hit Probability(%) 98 98 98 96 77 44 25 15


 
7.5cm Pzgr 40
(AP40 Armour Piercing Tungsten Cored)
75mm 4.1Kg 920M/Sec
Quoted Penetration 115mm @ 500mtr/30° ( ≈ 132mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.11 0.23 0.47 1.02 1.67 2.45 3.42 4.63
Penetration(mm@30°) 151 138 123 105 88 72 58 45
Penetration(mm@0°) 175 160 143 122 102 84 68 53
Hit Probability(%) 98 98 98 98 81 48 25 8



7.5cm Sprgr 34
(HE High Explosive)
75mm 5.8Kg 548M/Sec 0.640Kg explosive
Maximum Range not shown as gun elevation is limited
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.18 0.38 0.77 1.63 2.61 3.71 4.98 6.44
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.18 0.38 0.77 1.63 2.61 3.71 4.98 6.44
Hit Probability(%) 98 98 98 81 41 22 8 3
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill3 mtr Burst radius Infantry in open 66% kill6 mtr
Burst radius Infantry in open 33% kill17 mtr  Armour Penetration inc roof at 1 mtr1 mm
An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 17 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 1 mm of the tank armour including the roof.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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