Marine Copper-Nickel Parts CNC Machining
CuNi 90/10 & 70/30 Precision CNC Machining — RFQ Ready
Marine copper-nickel components are usually purchased for one reason: they have to keep working in seawater. When the part geometry is complex, tolerances are tight, or documentation is required for acceptance, sourcing becomes less about "finding a shop" and more about reducing technical and delivery risk.
At AXALLOY Precision (Shenzhen), we support engineering, procurement, and quality teams that need controlled CNC machining and export-ready documentation for marine and seawater-service hardware—especially when the project includes critical interfaces, sealing surfaces, thin walls, or repeat orders that must stay consistent.
Request an RFQ:
Send your 2D drawing + 3D model (STEP preferred), material spec (CuNi grade), quantities, and required certificates.
What you get when you source Marine Copper-Nickel Parts from AXALLOY
1) Parts that assemble correctly the first time
Copper-nickel is forgiving in corrosion environments, but assemblies are not. We focus on holding the relationships between features (datums, bores, faces, threads) so your parts fit without rework.
- Multi-axis milling and mill-turn reduces setups, helping you maintain stronger feature-to-feature alignment
- Tolerance review and fixture planning to protect critical datums and sealing interfaces
2) Less corrosion risk from the wrong material or mixed lots
If your application is seawater piping, heat exchangers, fittings, or marine instrumentation, the wrong alloy or mixed traceability can become an acceptance problem. We supply:
- Material traceability
- MTR / Mill Test Certificate
- Lot control records tied to your PO and drawing revision
3) Inspection evidence that supports customer acceptance
For many marine programs, the issue is not only "can you machine it," but "can you prove it." We support:
- FAI (First Article Inspection)
- Full dimensional reports for critical features
- Surface roughness reporting when needed
- Project-specific quality records (ballooned drawings, inspection photos on request)
4) Lead time that protects your build schedule (not just "faster")
When you're waiting on a marine assembly, every slip can block pressure testing, coating, or final integration. Our prototype and expedited options help you:
- Validate design quickly (prototype quantities)
- Lock a stable process route before repeat production
- Reduce schedule risk when replacing an unreliable supplier
Typical Marine Copper-Nickel Components We Machine
- Marine fittings, connectors, nozzles, threaded adapters
- Valve parts and bodies (multi-feature rotational parts)
- Housings, brackets, manifolds, instrument components
- Sealing faces, bearing fits, critical interface plates
- Parts requiring deburring, cleaning, marking, and assembly support
Machining Processes Available for Copper-Nickel Projects
If your part includes thin walls, tight positional tolerance, or difficult internal features, include your critical-to-quality (CTQ) list in the RFQ so we can define the inspection plan early.
3/4/5-axis CNC Milling
For complex pockets, contours, and interfaces
Turning & Live-Tool Turning
For precision rotational parts
Mill-Turn
Fewer setups and better feature relationships
Wire EDM / Sinker EDM
Narrow slots, sharp internal corners, or deep cavities (conductive alloys)
Precision Grinding
For sealing surfaces and bearing fits
Supporting Processes
Deburring, marking, cleaning, coating coordination, assembly support
Capability Parameters (For RFQ Evaluation)
General Capabilities
| Supported production volume | 1–10,000+ parts |
| Prototype quantity / Low-volume / Batch | 1–20 / 20–500 / 500–10,000+ parts |
| Standard / Precision dimensional tolerance | ±0.010 mm / ±0.005 mm |
| Position tolerance / Flatness / Concentricity | down to 0.010 / 0.005 / 0.008 mm |
| Standard / Precision / Ground surface finish | Ra 1.6 μm / 0.8 μm / down to 0.2 μm |
| Min. wall thickness / hole diameter / thread | 0.5 mm / Ø0.5 mm / M1.0 |
| Max part weight / MOQ | 1,000 kg / 1 part |
| Standard / Prototype lead time | 10–20 / 5–10 business days |
| Expedited service | Available |
CNC Milling
| Machining types | 3/4/5-axis CNC milling |
| Max 3-axis / 4-axis / 5-axis size | 1,000×600×600 / Ø500×800 / Ø500×400 mm |
| Milling tolerance | down to ±0.005 mm |
| Min. internal corner radius | R0.3 mm |
| Positioning accuracy / repeatability | ±0.005 mm / ±0.003 mm |
| Operations | facing, contouring, pocketing, drilling, tapping, boring, thread milling |
CNC Turning / Mill-Turn
| Max turning diameter / length | Ø500 mm / 1,000 mm |
| Turning tolerance | down to ±0.005 mm |
| Concentricity / roundness | down to 0.008 / 0.005 mm |
| Mill-turn configuration | main & sub-spindle, C/Y axis, live tooling (up to 9 axes) |
| Mill-turn max diameter / length | Ø400 mm / 800 mm |
| Typical mill-turn tolerance | ±0.008 mm |
Inspection & Documentation
| CMM range / accuracy | 700 × 1,000 × 600 mm / up to 1.8 + L/300 μm |
| Optical measurement accuracy | ±0.002 mm |
| Surface roughness measurement | Ra 0.05–40 μm |
| Available reports | FAI, full dimensional, ballooned drawing, surface roughness |
| Traceability | material & lot traceability available |
| Certificates | MTR, Mill Test Certificate, CoC, heat treatment / coating certificates (as applicable) |
What to Include in Your RFQ
To quote marine copper-nickel parts accurately—and avoid change orders later—please send:
- 2D drawing (PDF) with GD&T, notes, and revision
- 3D model (STEP/STP preferred)
- Copper-nickel grade (e.g., CuNi 90/10 or 70/30) and any specification requirements
- Quantity (prototype + forecast if repeat)
- Critical features (datums, sealing faces, press fits, threads)
- Surface finish requirements (Ra targets where applicable)
- Documentation needs (MTR, CoC, FAI, full inspection, photos, packaging)
- Target ship date and delivery location
File formats accepted: STEP/STP, IGES/IGS, X_T, X_B, SLDPRT, SAT; drawings PDF/DWG/DXF. Max upload size: 500 MB.
When AXALLOY Is a Good Fit
Good fit
Complex marine hardware, controlled tolerances, repeatability expectations, and projects requiring traceability + inspection evidence.
Not a fit
Commodity parts purchased only on lowest unit price, incomplete requirements, or unclear certification expectations.
Request a Quote for Marine Copper-Nickel Parts
Send your drawings/models and requirements, and we'll return:
- • A manufacturable route (process + setups) aligned to your tolerances
- • Quote with lead time options (prototype/standard/expedite)
- • Documentation plan (MTR/FAI/dimensional reporting as required)
Send Your RFQ
Upload your 2D drawing + 3D model (STEP preferred), material spec, quantities, and required certificates.