Copper Machined Parts and Copper Turned Components — Precision CNC Manufacturing from India
Brass Parts India is a premier manufacturer and exporter of Copper Machined Parts and Copper Turned Components, delivering precision-engineered copper components to buyers in the USA, UK, Germany, Canada, Australia, and 40+ countries worldwide. With more than three decades of CNC machining expertise and a deep understanding of copper alloys, we produce copper machined parts to the tightest international dimensional and material standards.
Copper’s unique combination of electrical conductivity, thermal conductivity, corrosion resistance, and antimicrobial properties makes copper turned components the material of choice for electrical engineering, power distribution, telecommunications, medical devices, and defence applications. Our team is ready to manufacture your copper machined parts from drawing, sample, or specification.
Why Copper for Precision Machined Components?
Copper machined parts outperform most metals in specific critical applications. Copper turned components offer: the highest natural electrical conductivity (100% IACS for ETP copper) among engineering metals, exceptional thermal conductivity for heat management, natural antimicrobial properties for medical and food-contact applications, superior corrosion resistance in many environments, excellent solderability and weldability, and good machinability with the right alloy selection.
Copper Alloy Grades for Machined Parts — With International Equivalents
| Grade / Name | UNS (USA) | EN / CW (Europe) | BS (UK) | DIN (Germany) | JIS (Japan) | IS (India) | Best For |
|---|---|---|---|---|---|---|---|
| ETP Copper (Electrolytic Tough Pitch) | C11000 | CW004A / Cu-ETP | C101 | E-Cu58 | C1100 | IS 191-A | Electrical contacts, busbars, turned connectors |
| OFHC / OFE Copper (Oxygen Free) | C10200 / C10100 | CW008A / Cu-OF | C103 | OF-Cu | C1020 | — | Vacuum devices, electronics, audio |
| Free-Machining Copper (Tellurium) | C14500 | CW118C / Cu-Te | C109 | CuTeP | C1450 | — | High-volume CNC turning, connectors |
| Beryllium Copper | C17200 | CW101C / CuBe2 | CB101 | CuBe2 | C1720 | — | Spring contacts, tooling, non-sparking |
| Chromium Copper | C18200 | CW105C / CuCr1 | — | CuCr1 | C1820 | — | Resistance welding electrodes, busbars |
| Phosphor Bronze | C51000 | CW451K / CuSn5 | PB102 | CuSn5 | C5100 | IS 7811 | Bearings, bushings, spring components |
Types of Copper Machined Parts We Manufacture
- Copper Turned Components: CNC-turned copper bushings, sleeves, connectors, studs, pins, spacers, and custom profiles
- Copper Electrical Contacts: Contact tips, contact heads, contact screws, electrode holders, current-carrying connectors
- Copper Bus Bar Ends & Terminals: Machined copper terminal lugs, bus bar adapters, cable end terminals
- Copper Resistance Welding Electrodes: CuCr1 / C18200 machined welding tips, electrode shanks, electrode caps
- Copper Waveguide Components: Precision-machined OFHC copper waveguide sections, flanges, bends for microwave/RF
- Copper Heat Sink Components: Machined copper cold plates, liquid cooling blocks, heat spreaders
- Copper Grounding Hardware: Copper grounding bolts, bonding lugs, earthing studs
- Copper Plumbing Machined Parts: Valve bodies, end caps, fittings, adaptors in DHP copper (C12200)
- Copper Connector Pins & Sockets: High-conductivity ETP copper pin contacts, socket contacts for high-current connectors
- Custom Copper Turned Parts: Any complex copper turned component to your 2D/3D drawing
Our Technical Expertise in Copper CNC Machining
Copper machining presents unique challenges — copper’s high ductility and tendency to work-harden require specific tooling, speeds, and feeds that only experienced machinists can master. Brass Parts India has refined our copper machining processes over 30+ years:
- Multi-Axis CNC Turning (2-axis to 5-axis): Complex copper turned components with undercuts, tapers, cross-holes — all in one setup
- Swiss-type CNC Turning: Small-diameter copper turned components from ∅0.5 mm to ∅30 mm — ideal for connector pins and contact tips
- CNC Milling: Prismatic copper machined parts — cold plates, heat sinks, electrode shanks
- Deep Hole Drilling: Long-bore copper components — cooling channels, electrode bodies
- Thread Grinding: Precision threads on copper turned components — BSP, NPT, UNC, UNF, metric
- Internal & External Grinding: High-precision copper bushing bores and OD finishes to Ra 0.4 µm
- Surface Finishing: Tin plating, silver plating, nickel plating, gold plating, chrome plating, passivation for copper machined parts
Dimensional Size Chart — Copper Turned Components
| Component Type | Diameter Range | Length Range | Thread Options | Tolerance | Surface Finish |
|---|---|---|---|---|---|
| Copper Connector Pins | ∅0.5 mm – ∅25 mm | 5 mm – 150 mm | UNC, UNF, Metric | ±0.01 mm | Tin / Silver / Gold plated |
| Copper Bushings & Sleeves | ∅4 mm – ∅100 mm | 5 mm – 200 mm | Internal threads | ±0.01 mm | As machined / Nickel |
| Copper Electrode Tips | ∅6 mm – ∅50 mm | 15 mm – 150 mm | None / Taper | ±0.02 mm | As machined |
| Copper Cold Plates | Up to 300 mm × 300 mm | 10 mm – 50 mm thick | Inlet/outlet BSP/NPT | ±0.05 mm | Nickel / Electroless Ni |
| Copper Grounding Studs | ∅6 mm – ∅30 mm | 20 mm – 200 mm | BSP, UNC, Metric | ±0.02 mm | Tin / Bare |
| Custom Copper Turned Parts | ∅0.5 mm – ∅200 mm | Per drawing | Per specification | Per drawing | Per requirement |
Performance Metrics — Copper Machined Parts
- Electrical Conductivity (C11000 ETP): 100% IACS
- Electrical Conductivity (C14500 Free Machining): 90–95% IACS
- Tensile Strength: 200–500 MPa (depending on alloy and temper)
- Hardness: 40–130 HB (annealed to fully hard, by alloy)
- Thermal Conductivity: 385–400 W/m·K (ETP Copper)
- Machinability Rating (C14500 Tellurium Copper): 85% relative to C36000 free-cutting brass
- Operating Temperature: –200°C to +350°C depending on alloy and application
- Typical Lead Time: 4–6 weeks standard; 2–3 weeks fast-track for prototypes
- MOQ: No minimum — 1 piece prototype to 500,000+ pieces production
- Dimensional Tolerance: ±0.01 mm standard; ±0.005 mm ultra-precision available
Why Choose Brass Parts India for Copper Machined Parts?
- Three Decades of Copper Machining Expertise: Since the 1990s, we have mastered the nuances of machining ETP copper, OFHC copper, tellurium copper, beryllium copper, and chromium copper — delivering consistent, defect-free copper turned components batch after batch.
- Faster Turnaround: Our integrated facility with in-house tooling, CNC machining, plating, and QC delivers copper machined parts in 4–6 weeks — with no external dependency bottlenecks.
- Global Standards Compliance: We understand ASTM, BS, DIN, JIS, and IPC standards for copper. Documentation including MTCs, CoC, RoHS/REACH declarations, and first article reports is standard practice.
- Superior Communication: English-language technical communication, quick response to RFQs (within 24 hours), regular shipment updates, and transparency on production progress make us a trusted partner across USA, UK, and Europe.
- Competitive Value: India’s copper machining cost base delivers 25–40% cost savings versus equivalent Western sources without any compromise on quality.
- Flexible MOQ: From 1-piece prototypes to millions of pieces — we scale with your needs.
- Export-Worthy Packaging: VCI-protected, individually inspected copper machined parts packed in export-grade cartons ready for international transit.
What Separates Us from Other Copper Machined Parts Manufacturers
- We stock multiple certified copper grades including the difficult-to-source beryllium copper (C17200/CW101C) and chromium copper (C18200/CW105C) — not just ETP copper
- Our Swiss-type turning machines handle the very small-diameter copper turned components (pins, contacts, ∅0.5–10 mm) that most general machine shops cannot produce
- In-house silver plating and gold plating for high-end connector applications — no outsourcing delay
- Dedicated copper electrode and resistance welding component manufacturing capability
- We have experience supplying copper waveguide components for defence and microwave industries — a highly specialised segment
Our Flexibility to Customize Copper Turned Components
Brass Parts India offers complete customization of copper machined parts: alloy selection from ETP to OFE to beryllium copper; any thread standard (BSP, NPT, UNC, UNF, G, PG, Metric, custom); any length-to-diameter ratio up to L/D 15:1 on Swiss machines; complex external profiles, knurling, grooves, undercuts; blind and through bores to ±0.005 mm; any surface finish from bare copper to silver, gold, tin, nickel, chrome plating; assembly services (press-fit inserts, sub-assemblies); and custom packaging and marking (stamped part numbers, laser etch). Send us your drawing or sample — we will manufacture it.
Export-Worthy Packaging Standards
Copper machined parts require careful packaging to prevent surface damage and oxidation. Our export packaging includes: individual VCI poly-bag wrapping for each copper turned component, foam-lined compartmented trays for precision parts, hard-case protection for delicate electrode tips and contact components, double-wall corrugated export cartons, moisture-barrier inner bags with silica gel desiccants, complete labelling with part number, revision, quantity, and batch number, and a full documentation package: packing list, CoC, MTC, RoHS declaration. We comply with ISPM-15 for all wooden packaging materials used in exports.
Customer Testimonials
“We’ve been sourcing copper resistance welding electrode tips and CNC turned copper connector pins from Brass Parts India for over four years. Their CuCr1 electrode machining is excellent — precise dimensions, good surface finish, and the chromium copper hardness is consistent. They have been a dependable, communicative partner throughout.”
— David Callister, Engineering Procurement Manager, Canada
“Brass Parts India delivered our OFHC copper waveguide components to exact specification — something that many Indian suppliers could not achieve. Their understanding of oxygen-free copper machining requirements and their clean-room packaging were impressive. Delivery was on time and documentation was complete.”
— Eleanor Simms, Defence Supply Chain Lead, United Kingdom
Typical Q&A — Copper Machined Parts and Copper Turned Components
1. What is the best copper grade for CNC turning?
Tellurium copper (C14500 / CW118C) is the best copper grade for CNC turning, offering machinability of 85% relative to free-cutting brass, with 90–95% IACS conductivity. For maximum conductivity, ETP copper (C11000) is preferred, though with slightly lower machinability. For spring contact applications, beryllium copper (C17200) is used.
2. How do you ensure dimensional consistency on copper turned parts?
We use Mitutoyo CMM, optical projectors, and calibrated digital gauges for dimensional inspection. First Article Inspection (FAI) is performed on every new part, and in-process SPC checks are carried out on every batch. All copper turned components are 100% inspected for critical dimensions before shipment.
3. What plating options are available for copper machined parts?
Available platings include: tin plating (matte or bright, 2–25 µm), silver plating (2–50 µm), nickel plating (electroless or electrolytic, 5–25 µm), gold plating (flash to thick, 0.1–5 µm), chrome plating, and passivation. All plating is performed in our in-house facility to ASTM and IPC standards.
4. Can you produce copper machined parts with complex internal geometries?
Yes. Our multi-axis CNC turning centres and CNC milling VMCs can produce copper machined parts with complex internal bores, cross-holes, angled features, internal threads, and undercuts. We use live tooling on our CNC lathes for milling and drilling features in one setup.
5. What is OFHC copper and when is it required?
OFHC (Oxygen-Free High Conductivity) copper (C10200 / CW008A) contains <0.001% oxygen, preventing hydrogen embrittlement during brazing. It is required for vacuum tube components, semiconductor manufacturing equipment, electron beam devices, and any application where outgassing must be minimised.
6. What is the MOQ for copper turned components?
There is no rigid MOQ. We manufacture copper turned components from prototype quantities (1–50 pieces) right up to high-volume production (500,000+ pieces/month). Pricing scales with volume, and we provide break-priced quotations showing per-piece cost at different quantities.
7. Can you supply copper machined parts to ASTM B124 standard?
Yes. We supply copper machined parts manufactured from bars and forgings complying with ASTM B124 (copper alloys), ASTM B187 (copper bus bar), ASTM B193 (copper resistance), and other ASTM standards. Full MTCs provided.
8. What is the surface roughness you can achieve on copper turned parts?
Standard surface roughness for copper turned components: Ra 1.6 µm (general machining), Ra 0.8 µm (finish turning), Ra 0.4 µm (precision grinding), Ra 0.1 µm (lapping/superfinishing). We specify Ra values on drawings and verify with profilometers.
9. Are your copper machined parts RoHS compliant?
Yes. All copper alloy materials we use comply with RoHS 2011/65/EU Directive. We provide RoHS compliance declarations and REACH SVHC statements with every shipment. Our ETP, OFHC, and free-machining copper grades contain no restricted substances.
10. Can you machine beryllium copper (C17200)?
Yes, we machine beryllium copper (C17200 / CW101C / CuBe2) for spring contacts, precision tooling inserts, and non-sparking tools. Beryllium copper machining requires specialised safety protocols — our facility is equipped and certified for beryllium copper handling to OSHA and EU safety standards.
11. Do you provide first article reports for copper turned components?
Yes. A full First Article Inspection (FAI) report is provided for all new copper machined parts, including dimensional measurements against drawing, material test certificate, surface finish measurement, and plating thickness verification where applicable.
12. What is chromium copper and what is it used for?
Chromium copper (C18200 / CW105C / CuCr1) is a precipitation-hardened copper alloy offering 80% IACS conductivity with Vickers hardness up to 180 HV. It is primarily used for resistance welding electrodes, seam welding wheels, spot welding tips, and high-temperature electrical contacts.
13. Can you supply copper cold plates for liquid cooling?
Yes. We machine CNC copper cold plates and liquid cooling blocks for power electronics from ETP copper or OFHC copper, including internal channel milling, inlet/outlet fittings, and surface nickel plating for fluid compatibility.
14. What is your lead time for copper machined parts prototypes?
Prototype copper machined parts are typically delivered in 2–3 weeks from drawing approval and advance payment, depending on complexity. We prioritise prototype work to support our customers’ product development cycles.
15. What industries do you supply copper turned components to?
We supply copper machined parts to: electrical switchgear, power distribution, EV (electric vehicles), telecommunications, defence electronics, medical devices, HVAC, resistance welding, semiconductor manufacturing, RF/microwave systems, and industrial automation sectors.
16. Can you assemble copper machined parts into sub-assemblies?
Yes. We provide assembly services including press-fitting copper bushings into housings, screwing copper studs into assemblies, and building complete copper connector sub-assemblies — shipped as ready-to-use components to reduce your assembly floor burden.
Glossary of Related Terms — Copper Machined Parts
ETP Copper: Electrolytic Tough Pitch Copper — 100% IACS, standard electrical copper. OFHC Copper: Oxygen-Free High Conductivity Copper — ultra-pure, used in vacuum and electronics. Tellurium Copper (C14500): Free-machining copper with 85% machinability rating. Beryllium Copper (C17200): High-strength, spring-temper copper for contacts and tooling. Chromium Copper (C18200): Heat-treated copper for welding electrodes. IACS: International Annealed Copper Standard — 100% = 58 MS/m. FAI: First Article Inspection — dimensional and material verification of initial production parts. VCI: Volatile Corrosion Inhibitor — packaging protection against tarnishing. Cold Plate: Liquid-cooled copper component for thermal management. Waveguide: Precision copper tube for microwave transmission.
Related Parts: copper turned parts, copper CNC parts, copper precision components, copper connector pins, copper electrical contacts, copper electrode tips, copper welding electrodes, copper bushing, copper sleeve, copper stud, copper bolt, copper grounding hardware, copper cold plate, copper heat spreader, copper bus bar machined, copper terminal lug, copper waveguide, copper coaxial components, ETP copper turned parts, OFHC copper machined parts, tellurium copper CNC parts, beryllium copper contacts, chromium copper electrodes, copper custom turned components
Request a Quote — Copper Machined Parts
Whether you need a single prototype or hundreds of thousands of copper turned components per month, Brass Parts India has the expertise, equipment, and commitment to become your trusted long-term copper machined parts supplier.
Contact our team today:
- Email: sales@brass-parts-india.com
- Phone: +91 22 43 44 9300
- Submit your drawings or enquiry via our Request a Quote form — and receive a detailed quotation within 24–48 hours
Brass Parts India — 30+ years of precision copper machining, global export experience, and the customer-first approach that makes the difference. Partner with us for your copper machined parts and copper turned component requirements today.
