We manufacture and export aluminium 3 core sector ferrules or three core sector aluminium ferrule. Our range of cable lugs and terminal ends also includes aluminium ferrules. These are made of aluminium. specifications - crimping test applied force : up to 240 mm2 -1.2 x 105 n. - 300 mm2 to 630 mm2 - 2.2 x 105 n above 630 mm2 - 4.2 x 105 n. - construction: ec grade copper is friction welded to ec grade aluminium. Further machined to required size.