[[File:Softening of Pt after annealing.jpg|right|thumb|Softening of Pt after annealing for 0.5 hrs after 80% cold working]]

Fig. 2.33: Strain hardening of PtIr5 by cold working

Fig. 2.34: Softening of PtIr5 after annealing for 1 hr after different degrees of cold working