Metal material guide
Copper CNC Machining Service
Copper components are usually selected around electrical or thermal function. Specify the grade, temper, product form and critical contact surfaces because high-conductivity copper and alloyed copper grades are not interchangeable.
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When Copper fits — and when to pause.
Electrical contacts
Define conductivity, contact faces and plating.
Thermal parts
Tie material choice to geometry, joining and coolant or corrosion exposure.
Mechanical duty
Check whether strength or wear requires a copper alloy instead.
Use a complete material designation.
The following examples are common ways buyers describe the family. They are not a stock list and they do not authorise substitution.
- C10100 oxygen-free electronic copperConfirm supplier grade, condition, stock form and required documentation.
- C11000 electrolytic tough-pitch copperConfirm supplier grade, condition, stock form and required documentation.
RFQ material line
Copper · UNS grade, temper and conductivity requirement · stock form · quantity · required certificates · permitted substitutions.
If an application approval matters, name the regulation, edition and acceptance evidence.
Plan machining around the material behaviour.
Burr control
Identify edges, holes and sealing paths where burrs are unacceptable.
Clamping
Plan support for soft or thin features.
Handling
Protect contact and cosmetic surfaces from dents and contamination.
Specify the final surface and dimensions.
Nickel or tin plating
State functional purpose, thickness, masking and final dimensions.
Polishing
Define the surface and appearance standard.
Bare copper
Clarify oxidation expectations, packaging and handling.
Separate material identity from dimensional inspection.
Purchase specification, supplier documents, lot traceability and an agreed identification or test method where appropriate.
Drawing, datums, critical characteristics, inspection conditions and the required report format.
Use the relevant tester only when the drawing defines the parameter, method, location and acceptance range.
Reference and quotation boundary.
External material reference: Copper Development Association alloy database ↗
The source supports general material context. It does not establish Prolean stock, achievable tolerances, certification scope, price or delivery for a specific part. Those are confirmed in the quotation.
Technical review updated October 2026.
Copper machining questions.
How should Copper be specified for machining?
State the complete UNS grade, temper and conductivity requirement, the stock form, permitted substitutions and required documents. Add the drawing, quantity, finish and inspection requirements.
Does a listed grade mean it is stocked?
No. The examples help structure an RFQ. Availability, substitutions, price and delivery are confirmed for the project.
How are tolerances confirmed?
Tolerances depend on geometry, material condition, feature size, quantity, finishing and inspection conditions. Mark critical dimensions and datums; the quote confirms what can be held.
Can material documents and inspection reports be supplied?
State the required certificate, traceability and dimensional or test report with the RFQ. The available document set and test method are confirmed before production.
Bring the drawing and material into one review.
Send the CAD model or drawing, quantity, material designation, service conditions, finish and acceptance requirements.
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- MaterialComplete grade, condition, stock form and documents.
- PartCritical dimensions, datums, finish and inspection.
- ProjectQuantity and requested delivery date.