When a fountain pen glides lightly over a sheet of paper and forms words in filigree, clean lines a mere millimeter thick, this is the result of using the right fountain-pen nib. The spherical tips must be very hard, abrasion-proof, tough, durable, and ink-resistant. And it must be possible to weld them to both gold and steel nibs.
Only high-quality precious metal alloys are suited for this task. The majority of the small (0.6–1.6 mm) precious-metal balls at the tips of fountain pens are made of ruthenium-osmium alloys.
Heraeus possesses in-depth technological expertise in manufacturing these products no other company can match, and has been producing the sought-after alloys since the 1920s. Today, the majority of pen points throughout the world come from Hanau