Brass alloy for writing instrument tips
AssigneeSociete BIC
InventorJulien Bouchet
Life of this patent
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Abstract
A tip for a handheld writing instrument-includes a brass alloy comprising the following composition: Cu in an amount of from about 52 wt.-% to about 62 wt.-%, Sn in an amount of from about 0.1 wt.-% to about 1.0 wt.-%, Fe in an amount of from about 0.1 wt.-% to about 1.0 wt.-%, Si in an amount of from about 0.05 wt.-% to about 0.5 wt.-%, Ni in an amount of from about 0.05 wt.-% to about 0.5 wt.-%, Pb if present, in an amount of less than about 0.05 wt.-%, optionally other elements in a total amount of less than about 3 wt.-% (impurities), and Zn as balance.
Claims15
A tip for a handheld writing instrument, the tip comprising a brass alloy consisting essentially of:
- Cu:
- in an amount of from about 52 wt.-% to about 62 wt.-%,
- Sn:
- in an amount of from about 0.10 wt.-% to about 1.0 wt.-%,
- Fe:
- in an amount of from about 0.10 wt.-% to about 1.0 wt.-%
- Si:
- in an amount of from about 0.05 wt.-% to about 0.50 wt.-%,
- Ni:
- in an amount of from about 0.05 wt.-% to about 0.50 wt.-%,
- Bi:
- in an amount of from about 0.05 wt.-% to about 0.70 wt.-%,
- Te:
- in an amount of from about 0.05 wt.-% to about 0.20 wt.-%,
- Se:
- in an amount of from about 0.05 wt.-% to about 0.20 wt.-%,
- Pb:
- if present, in an amount of less than about 0.05 wt.-%, and
- Zn:
- as balance.
Dependencies are inferred from the claim text.