2. Basic metal
All HECKEL-S-bocals are available in different metals. The respective basic metal can be
deducted from the stamp of the S-bocal which is located above the cork.
2.1. German silver (Marked "N" or "Z")
Two German silver alloys can be distinguished, i. e. the hard German silver marked with a
"Z" and the soft German silver marked "N".
According to our standards, the thick walled CC-bocals are made from soft German silver (N)
and, for resistance reasons, the thinner walled CD-bocals from the harder German silver (Z).
In addition, we offer a thick walled bocal manufactured with the hard German silver material
"Z" which is marked with the character "C".
2.2. Gold brass (Marked"G")
The gold brass -S-bocal is the most popular type after the German silver S-bocal. It is
particularly suitable for chamber music. The gold brass S-bocal is characterized by its
particularly soft sound.
2.3 Sterling silver 935 (Marked "S")
Because of the softness of the of the metal, the Sterling silver-S-bocal is characterized by
similar features as the S-bocal made from gold brass. The sound of this bocal-type is slightly
2.4 Gold (Marked "AU")
The gold-S-bocal has a medium hard sound. Because of the low demand and the extremely high
price this S-bocal is quite seldom ordered.
2.5 Palladium alloy (Marked "PD")
Due to the increased incidence of allergies we made an effort to find a substitute for the
controversial metal German silver. In this context we found a Palladium alloy which is
distinguished by its excellent sound characteristics, but, however, implies high costs for
the raw material, which influence the price of the S-bocal accordingly.