Studies in Cold-Drawing: Part 2—Cold-Working 2S-O Aluminum

This is a study in the cold-working of 2S-O aluminum up to a true reduction in rod area of 0.76 by drawing through conical dies of 1 deg half-angle. Various properties were obtained such as true stress-strain diagrams in tension, hardness, conventional shear stress-strain diagrams, and the distribution of the residual stresses. The effect of the amount of reduction and the direction of drawing per pass (defined as sequence in drawing) on the properties were determined. Some fatigue data are reported. Drawing loads and ratios of yield strengths in torsion to tension are reported. Part 3 discusses some measurements on the coefficient of friction.