Canning and Fish Packaging Technology

Unit 8 - Metal Containers

8.1.5.Aluminium
Commercially pure aluminium or aluminium alloy of 1000 or 3000 or 5000 series are used depending on the container design and fabrication method. (The number depends on the Content Manganese in the alloy). 3000 series is used for DRD and DWI cans. 5000 series are used for DRD cans, can ends and ring full tabs (easy open ends). Manganese increases the strength of the material but reduces resistance to corrosion to acids and alkalies.