Germany
PzKpfw II Ausf b (Panzer II)
Ordnance classification - SdKfz 121

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The PzKpfw II Ausf b based on the existing PzKpfw II and was in use from 1937 to 1945.

General Details Specifications Operational Date(s) 1937 - 1945 Ordnance classification SdKfz 121 Quantity Produced 25 Weight unknown Crew 3 M.G's small 1 M.G's large(>10mm) n/a Length 4.76 mtr Width 2.14 mtr Height 1.96 mtr Engine Details/Performance Max Road Speed 25 mph Max Cross Country Speed 11 mph Range Road 125 miles Range Cross Country unknown Fuel Type Petrol Fuel Capacity unknown Horse Power 140 hp Power/Weight unknown General Information The PzKpfw II Ausf b based on the existing PzKpfw II and was in use from 1937 to 1945. It was armed with 1 light machine gun. Its main armament consisted of a 2.0cm KwK 30 L/55 which could penetrate 15 mm of flat plate at 200 metres Armour Details Turret Front 13mm @ 45° (18mm) Side 13mm @ 21° (14mm) Rear 13mm @ 21° (14mm) Top 10mm @ 86° (10mm) Superstructure Front 13mm @ 10° (13mm) Side 13mm @ 0° (13mm) Rear 13mm @ 0° (13mm) Top 10mm @ 82° (10mm) Hull Front 13mm @ 45° (18mm) Side 13mm @ 0° (13mm) Rear 13mm @ 7° (13mm) Top 5mm @ 90° (5mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 18 mm - Minimum 5 mm

Weapon Details 2.0cm KwK 30 L/55 2.0cm Kampfwagenkanone 30 L/55 (translates as Tank Gun) History Used on the Panzer II. Manufacturer Mauser and Rheinmetall-Borsig Manufactured 1935 - 1945 Calibre 20mm Length L/55 Rate of Fire 120 rpm   Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 2.0cm PzGr 39 (AP Armor Piercing) 20mm 0.12Kg 899M/Sec Quoted Penetration 23mm @ 100mtr/30° ( ≈ 26mm/0°) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.12 0.25 0.59 1.68 Penetration(mm@30°) 18 13 9 5 Penetration(mm@0°) 21 16 11 6 Hit Probability(%) 98 98 98 81 2.0cm PzGr 40 (APCR Armor Piercing Composite Rigid) 20mm 0.115Kg 1060M/Sec Quoted Penetration 40mm @ 100mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.1 0.21 0.47 1.26 2.88 7.67 Penetration(mm@30°) 35 31 25 17 10 4 Penetration(mm@0°) 41 36 30 20 12 5 Hit Probability(%) 98 98 98 93 34 2 2 cm Sprgr. 39 (HE High Explosive) 20mm 0.132Kg 995M/Sec 0.006Kg explosive Maximum Range not shown as gun elevation is limited Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.22 0.5 1.35 3.05 8.12 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.22 0.5 1.35 3.05 8.12 Hit Probability(%) 98 98 98 90 25 2 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 0 mtr Burst radius Infantry in open 66% kill 0 mtr Burst radius Infantry in open 33% kill 1 mtr  Armour Penetration inc roof at 1 mtr 0 mm An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 1 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 not cause any significant armour damage.

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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