Injection Molding
Tooling and molding for your repeat plastic parts.
Copper Machining for Your Custom Parts
For your contact, cooling or precision copper component, select the grade around the working requirement. Define stock condition, accepted edges and finished contact surfaces before comparing a machining route.
4 Starting GradesSeparate purity, cutting and loaded-part needs.
Your Working SurfaceIdentify contact and thermal interfaces.
European ReferencesConfirm the complete purchasing standard.
Material & InspectionAgree evidence for the final state.
Choose Your Copper Grade Around the Working Requirement
For your copper alloy material selection, compare the complete material specification and final function. Use these references to frame your drawing review; they are not automatic purchasing substitutes.
C11000 ETP Copper — Your Material Review
For your busbar or terminal, compare contact geometry, supplied state and the joining environment. ETP copper contains oxygen; it is not oxygen-free copper.
| Your reference | What to confirm |
|---|---|
| UNS designation | C11000 |
| European comparison | Cu-ETP / CW004A |
| Selected composition · wt.% | Cu ≥99.90; O ≤0.040 |
| Stock condition | Product form, temper and usable allowance. |
| Final acceptance | Working geometry, surfaces and agreed material records. |
Define current path, contact area, allowable temperature rise and final surface separately from dimensions.
Review C11000 ETP Copper →
C10100 OFE Copper — Your Material Review
For your oxygen-free electronic or vacuum-related component, use the complete UNS designation and ordered product specification. A short C101 name can refer to a different copper in another standards system.
| Your reference | What to confirm |
|---|---|
| UNS designation | C10100 |
| European comparison | Cu-OFE / CW009A |
| Selected composition · wt.% | Cu ≥99.99 excluding Ag; O ≤0.0005 |
| Stock condition | Product form, temper and usable allowance. |
| Final acceptance | Working geometry, surfaces and agreed material records. |
Resolve impurity limits, supplied temper, handling and final interfaces; the name alone does not qualify a vacuum assembly.
Review C10100 OFE Copper →
C14500 Tellurium Copper — Your Material Review
For your threaded socket or bored contact, compare cutting requirements with the required conductivity. Tellurium copper is a different alloy; improved cutting behaviour does not approve substitution.
| Your reference | What to confirm |
|---|---|
| UNS designation | C14500 |
| European comparison | CuTeP / CW118C · qualified reference |
| Selected composition · wt.% | Te 0.40–0.70; P 0.004–0.012 |
| Stock condition | Product form, temper and usable allowance. |
| Final acceptance | Working geometry, surfaces and agreed material records. |
Combined Cu + Ag + Te + P ≥99.90 is not a pure-copper minimum. Agree the exact stock standard and final working requirement.
Review C14500 Tellurium Copper →
C17200 Beryllium Copper — Your Material Review
For your loaded contact carrier or insert, specify supplied and final condition. Geometry, strength and conductivity requirements need the actual product and thermal history.
| Your reference | What to confirm |
|---|---|
| UNS designation | C17200 |
| European comparison | CuBe2 / CW101C · qualified reference |
| Selected composition · wt.% | Be 1.80–2.00; Cu balance · selected elements |
| Stock condition | Product form, temper and usable allowance. |
| Final acceptance | Working geometry, surfaces and agreed material records. |
Review current supplier SDS and qualified processing scope before accepting any beryllium-containing route; no blanket operation availability is implied.
Review C17200 Beryllium Copper →
CDA C11000 ↗ CDA C10100 ↗ Concast C14500 ↗ CDA C17200 ↗ Aurubis European references ↗ Gindre CuTeP ↗ NGK CuBe2 ↗
Compare Common Copper Alloys
Compare electrical requirements and cutting behaviour separately. These material references do not predict assembly performance, machining time or your price.
Electrical Conductivity · % IACS at 20°C
060120
Indicative Machinability · free-cutting brass = 100
050100
Electrical: CDA C11000/C10100/C17200 published alloy references; C14500 thyssenkrupp annealed reference. C11000 published value 101 is accompanied by an annealed minimum of 100% IACS; C10100 reference 101 has its stated minimum basis. C17200 conductivity depends strongly on product and condition; confirm the actual supplied and final state. Machinability: CDA C11000/C10100/C17200 and thyssenkrupp C14500 reference ratings, using free-cutting brass as 100. Ratings are indicative, not cutting parameters or cycle-time ratios.
thyssenkrupp electrical references ↗ thyssenkrupp C14500 cutting reference ↗ NGK condition-dependent C17200 conductivity ↗
Your Copper Application Defines the Review
Electrical Contacts
Show current path, clamping area and allowed surface condition. Material conductivity alone does not establish contact resistance.
Cooling Components
Define channels, mating lands and remaining walls. Flow, pressure and thermal tests need separately agreed procedures.
Loaded & Joining Interfaces
Identify contact movement, load and thermal history. Review product condition, joints and supplier safety information before route approval.
CNC Machining for Your Copper Parts
Copper can form persistent burrs and pick up on cutting edges. Review tooling, support, chip removal and cleaning around your actual alloy and geometry; your quotation confirms the accepted route.
CNC Turning
Support shoulders, bores and threaded interfaces. Review tool access and contact protection.
Review the Process →
Milling & Channels
Define the mounting land, remaining wall and supported cutting route before releasing thin features.
Review the Process →
Drilling & Tapping
Identify bore exits and cross-hole edges. Agree chip removal and accessible inspection.
Review the Process →
Your Working Geometry
Separate electrical, cooling and locating surfaces. Mark accepted edges and first-sample checks.
Review the Process →Agree Your Copper Finish and Final Fit
Illustrative appearances. Define working faces, accepted tool marks, cleaning and protection. For plating, agree preparation, thickness, masking and dimensions after finishing; appearance alone does not establish contact performance.
Surface Finishing →
Inspect the State Your Assembly Receives
Connect your critical dimensions to finished datums and working surfaces. A dimensional report and a material record answer different receiving questions.
| 3 checks | Your acceptance input |
|---|---|
| 01 · Material identity | Exact grade, product standard, supplied temper and lot. |
| 02 · Finished geometry | Contact lands, bore relationships, threads and accepted edges. |
| 03 · Separate functional evidence | Any electrical, thermal, pressure or joint test requires an agreed method and limit. |
Specify the copper alloy material certificate scope with your order. Do not infer finished-part qualification from a grade label.
Quality Assurance →
Coordinate Your Drawing and Receiving Requirements
Connect China manufacturing with Dallas-area coordination for drawing review, sample decisions and delivery requirements.
6 Inputs for Your Copper Quote
01CAD + controlled drawing
02Exact grade + product standard
03Stock form + supplied condition
04Trial + repeat quantities
05Final fit + accepted edges + finish
06Inspection + material records + delivery
Compare the Same Finished Part
Your copper machining quote should use the same drawing revision, actual material, manufacturing route and receiving requirements.
Answers Before You Specify Copper
How to choose copper grade for custom parts?
Start with the working contact, cooling or loaded-interface requirement. Specify grade, stock form, supplied and final condition, critical surfaces and receiving evidence before comparing a route.
Can copper grades be substituted?
Approval requires the complete drawing and purchasing specification. Compare chemistry, product form, final condition and functional requirements; a European cross-reference is a candidate identification, not automatic acceptance.
Is C11000 the same as oxygen-free copper?
No. C11000 is electrolytic tough-pitch copper. C10100 is an oxygen-free electronic copper designation. Verify impurity limits and joining requirements against the ordered standard.
Does a machinability rating predict my machining quote?
No. It is a relative material reference. Your geometry, stock, setup, quantity, accepted edges, finish and inspection scope determine the reviewed route and quote.
How can burrs and surface damage be controlled?
Mark internal edges, contact lands and permissible edge breaks. Review tool access, work support, chip evacuation, cleaning and handling; approve the actual first-sample acceptance.
What must be reviewed for beryllium copper?
Identify the exact material and condition, current supplier SDS and qualified processing scope. Do not assume every operation is available for every beryllium-containing alloy.
Can copper parts be nickel or tin plated?
Review the actual substrate, preparation, coating system, thickness, masking and final fit. Agree working-surface and functional acceptance separately from appearance.
What should your copper machining inquiry include?
Provide CAD and a controlled drawing, exact grade and product standard, stock condition, trial and repeat quantities, working-surface criteria, accepted edges and the required receiving records.
