Footnotes

1. British armour of greater than 57mm to 63mm, both RHA and cast, was flawed until about 1944. [up]

2. Specification I.T.60 for face hardened (FH) armour of 7mm to 12mm thickness. [up]

3. Specification I.T.70 for thin homogeneous hard armour of 3mm to 30mm thickness. [up]

4. Specification I.T.80 for thick homogeneous machineable armour of 15mm thickness and over. [up]

5. Specification I.T.90 for cast armour of all thicknesses. [up]

6. Specification I.T.100 for thin homogeneous machineable armour of 3mm to 14mm thickness. [up]

7. Specification I.T.110 for backing plates. This was relatively soft carbon manganese steel riveted to a harder front plate (usually I.T.70) to form a composite armour plate. Occasionally I.T.110 was used by itself for certain non-critical areas, such as aft belly armour. [up]

8. Source: Jentz, Thomas L: Tank Combat in North Africa and Robert Livingston. Jentz is used for pre ’42 armour and Livingston for ’42 to ’45 armour. Due to the nature of the original specifications, determining an exact BHN for British armour is impossible; see the British Weapons Data page for further discussion. [up]