In continuation with our earlier work with Cu–Ni–Zn (Paper I) [Halder, De, and Sen Gupta, J. Appl. Phys. 48, 3560 (1977)], the role of addition of nontransitional solute tin (Sn) in the dilute range (∼1 wt. %) to alpha-brass alloys having compositions 5.0–34.0 wt. %Zn [present experiment concerns initial range, i.e., 5–24 wt. % Zn, and 24–34 wt. % Zn have been studied earlier by Halder, De, and Sen Gupta, Ind. J. Pure Appl. Phys. 17, 492 (1979)] has been examined in the light of x-ray diffraction methods of analyses dealing with peak shift, peak asymmetry, and peak broadening. Unlike the binary system, it has been interestingly observed that the addition of solute element tin in near dilute range of 1 wt. % to alpha-brass system increases the net-stacking fault concentration initially and has an arresting effect on all the microstructural parameters (namely, deformation stacking faults, coherent domain size, rms strains, density of dislocations, stacking fault energy, etc.), which do not change significantly with increasing zinc concentration up to ∼20 wt. %. However, the change is gradual and close to the binary system beyond 20 wt. %Zn where the addition of solute (Sn or Ni, as in Paper I) hardly fails to create any significant change.