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Ebonite is a hard and brittle material, very resistant to corrosion by acids, and softens when heated. It is an excellent electrical insulator. It is easy to process and has been used both for the construction of objects and as an electrical insulator (use that still holds today). It owes its name<ref>the "ebonite" one, still beeing much more commonly called "hard rubber" as "ebonite" was a trade name.</ref> because it was initially used as a substitute for ebony. Its chemical resistance characteristics have seen it used for many years as an insulator, coating for corrosion-prone parts and as a battery case for cars.

Ebonite is a hard and brittle material, very resistant to corrosion by acids, and softens when heated. It is an excellent electrical insulator. It is easy to process and has been used both for the construction of objects and as an electrical insulator (use that still holds today). It owes its name<ref>the "ebonite" one, still beeing much more commonly called "hard rubber" as "ebonite" was a trade name.</ref> because it was initially used as a substitute for ebony. Its chemical resistance characteristics have seen it used for many years as an insulator, coating for corrosion-prone parts and as a battery case for cars.

L'ebanite costituisce il primo materiale utilizzato per la produzione di penne stilografiche, in uso fin dai primi esemplari prodotti alla fine del 1800. Se anche alcuni oggetti considerati ''precursori'' della penna stilografica vennero realizzati in metallo, le prime stilografiche nacquero sostanzialmente in conseguenza della invenzione di questo materiale, che con le sue caratteristiche di lavorabilità, inerzia chimica (e conseguente resistenza alla corrosione), si rivelò ottimale per la costruzione del quel ''serbatoio'' di inchiostro che era in effetti il componente principale delle prime stilografiche, e questo anche grazie alle sue caratteristiche di isolante termico, che evitano la trasmissione del calore della mano all'aria del serbatoio, con conseguente aumento di pressione e perdita di inchiostro.  

Ebonite is the first material used for the production of fountain pens, in use since the first examples produced at the end of 1800. If even some objects considered as "precursors" of the fountain pen were made of metal, the first fountain pens were born substantially as a result of the invention of this material, which with its characteristics of ease of use, chemical inertia (and consequent resistance to corrosion), proved to be optimal for the construction of that "reservoir" of ink that was in fact the main component of the first fountain pens, and this also thanks to its characteristics of thermal insulation, which avoid the transmission of heat from the hand to the air of the reservoir, with a consequent increase in pressure and loss of ink.  

[[File:Swan-SelfFiller-SF2-Inscr.jpg|left|thumb|Esempio di scoloritura di una [[Swan]] in ebanite]]

[[File:Swan-SelfFiller-SF2-Inscr.jpg|left|thumb|Esempio di scoloritura di una [[Swan]] in ebanite]]