Copper alloys
Brass 464
UNS C46400 is naval brass, uninhibited, in the copper-zinc-tin group.
Identity / state reference
What distinguishes this material
'Naval brass' does not automatically establish dezincification-resistant approval for a particular water system.
- Designation in this reference
- UNS C46400
- Forms covered by the sources
- Wrought product
- form requires product specification
- States to distinguish or confirm
- Supplied temper must be confirmed
- Temperature and exposure
- No general service-temperature limit or temperature-independent strength is established by this page. Check the temperature and duration for the specific source table and application.
Other search names in these sources
C46400
Read the scope above: a source’s related product name is not a blanket interchangeability statement.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- What form, temper and service-fluid requirements does the specification identify?
- Obtain the full material certificate, governing specification/edition, product dimensions and test direction before adopting a property value.
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
CDA UNS register — wrought brasses
Official UNS composition register entries for C26000, C36000 and C46400; distinguishes leaded free-cutting brass from uninhibited naval brass. No temper strength limits.
CDA UNS register — wrought brasses ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Replace the blanket resistance-to-dezincification claim and the universal 415 MPa/78 HRB pair.
- Remove the untraceable generic machining recommendation (200 %) and cutting-speed ranges; select machining data by actual material condition, tool and operation.
Other references in Copper alloys
Related references, not equivalent substitutes.