  We continue here the systematic abundance analysis of a sample of Am binaries
in order to search for possible abundance anomalies driven by tidal interaction
in these binary systems. New CCD observations in two spectral regions
(6400-6500, 6660-6760 AA) of HD116657, HD138213, HD155375, HD159560, HD196544
and HD204188 were obtained. Synthetic spectrum analysis was carried out and
basic stellar properties, effective temperatures, gravities, projected
rotational velocities, masses, ages and abundances of several elements were
determined. We conclude that all six stars are Am stars. These stars were put
into the context of other Am binaries with 10 < Porb < 200 days and their
abundance anomalies discussed in the context of possible tidal effects. There
is clear anti-correlation of the Am peculiarities with v sin i. However, there
seems to be also a correlation with the eccentricity and may be with the
orbital period. The dependence on the temperature, age, mass, and
microturbulence was studied as well. The projected rotational velocities
obtained by us were compared to those of Royer et al. (2002) and Abt & Morrell
(1995).
