Copper alloys
Copper C10100
UNS C10100 is oxygen-free electronic copper (OFE).
Identity / state reference
What distinguishes this material
The source distinguishes its impurity/conductivity requirements from ordinary ETP copper; high purity is not a universal strength value.
- Designation in this reference
- UNS C10100
- Forms covered by the sources
- Wrought copper product
- States to distinguish or confirm
- Annealed conductivity condition
- mechanical temper must be specified
- 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
C10100
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
- Does the certificate explicitly identify C10100 and the required oxygen/impurity and conductivity tests?
- 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.
Copper Development Association — C10100
Specific alloy database entry; identity and listed form/temper distinctions. Direct fetch intermittently returns 403; indexed first-party text inspected on review date. No supplied-batch certification.
Copper Development Association — C10100 ↗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
- Remove 'highest conductivity of any commercial metal' and the unexplained 22% machinability rating.
- Remove the untraceable generic machining recommendation (22 %) and cutting-speed ranges; select machining data by actual material condition, tool and operation.
Other references in Copper alloys
Related references, not equivalent substitutes.