British Official Armour Specification
Encyclopedia
The British Official Armour Specification is a set of standards for armour
construction for armoured fighting vehicle
s prior to and into World War II
.
Standards applicable to British tanks of World War II are as follows:
Vehicle armour
Military vehicles are commonly armoured to withstand the impact of shrapnel, bullets, missiles, or shells, protecting the personnel inside from enemy fire. Such vehicles include tanks, aircraft, and ships....
construction for armoured fighting vehicle
Armoured fighting vehicle
An armoured fighting vehicle is a combat vehicle, protected by strong armour and armed with weapons. AFVs can be wheeled or tracked....
s prior to and into World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
.
Standards applicable to British tanks of World War II are as follows:
- I.T.60: Face-hardened 7 to 12 mm plate.
- I.T.70: Thin homogeneous hard 3 to 30 mm plate.
- I.T.80: Thick homogeneous-machineable 15 mm and greater plate.
- I.T.90: Cast armour of all thicknesses.
- I.T.100: Thin homogeneous-machineable 3 to 14 mm plate.
- I.T.110: Carbon manganese steel backing plate.