 Hansa's armor consisted of teak-backed wrought iron, which was manufactured in Great Britain. Her armored belt was 152 mm (6.0 in) thick amidships, where it protected the ship's vitals. On the bow and stern, the belt was reduced to 114 mm (4.5 in) in thickness. The entire belt was backed with 306 mm (12.0 in) of timber. The casemates were armored with 114 mm thick sloping iron plates. The lower battery casemate had 114 mm thick transverse armored bulkheads on either end of the side armor.
