Technical Layout

Armour

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General Information
Steel types used on Bismarck and Tirpitz

St 52 (Steel 52/Stahl 52): The figure 52 refers to a tensile strength of at least 52 kg/mm². St 52 was a construction grade steel with a tensile strength of 52-64 kg/mm², a strain of 21 per cent and yield point of 36-38 kg/mm².

KC n/A (neue Art) (Krupp cementite, new type): Face-hardened armour steel. It contained 3.5-3.8 per cent nickel, 2 per cent chrome, 0.3 per cent carbon, 0.3 per cent manganese and 0.2 per cent molybdenum. It was used for the armoured bridge, side belt, turrets and barbettes.

Ww (Wotan weich). Homogeneous armour steel with a tensile strength of 65-75 kg/mm², a strain of 25 per cent and yield point of 38-40 kg/mm². It was used for the longitudinal torpedo bulkheads.

Wh (Wotan hart). Homogeneous armour steel with a tensile strength of 85-95 kg/mm², a strain of 20 per cent and yield point of 50-55 kg/mm². It was used for the armoured decks.


Armour Layout
Bismarck
Click on the drawing to see an enlarged version
Notice that the figures are in millimeters
Codes of color explanation
See the figures on the drawing 80 mm 145 mm
320 mm 170 mm 60 mm

Armour Layout
Tirpitz
Click on the drawing to see an enlarged version
Notice that the figures are in millimeters
Codes of color explanation
See the figures on the drawing 80 mm 145 mm
315 mm 170 mm 60 mm

38 cm Turrets Armour Layout
Bismarck Tirpitz
Notice that the figures are in millimeters

15 cm Turrets Armour Layout
Middle Turret End Turret
Notice that the figures are in millimeters


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