A recently developed work-hardening model has been applied in an attempt to describe the deformation behaviour during tensile testing of cold rolled, partially annealed and recrystallised aluminium sheet. The model is based on a microstructural concept comprising three elements, the subgrain size, delta, the misorientation, theta, and the dislocation density in the subgrain interior, rho(i). Effects of solutes and particles on the work hardening behaviour have been accounted for in 0-temper (recrystallised) variants of the investigated alloys. The model is also able to handle the effect of a fine grain structure reasonably well.