Product Details
CuW Alloy Custom Component
CuW alloy custom component is the catch-all listing for CuW parts that don't fit a standard form (arc contact, plate, finger, element, rod, cap).
Technical Description
CuW Alloy Custom Component
CuW alloy custom component is the catch-all listing for CuW parts that don't fit a standard form (arc contact, plate, finger, element, rod, cap). If you have a drawing for a CuW part with a unique geometry, proprietary contact shape, custom heatsink, specialized arc-runner, or any other application requiring CuW in a non-standard form. This is the right starting point.
Most of our work is custom-machined to drawing. We don't operate from a fixed catalog of finished parts; the standard SKUs on this site exist because certain geometries repeat across customers. The alloy component listing is where everything else lives.
Specifications
| Property | Value |
|---|---|
| Material Grade | CuW70 / CuW75 / CuW80 (higher W on request) |
| Tungsten Content | 70, 75, 80 wt% (custom ratios on request) |
| Form | Per drawing |
| Maximum Part Size | Per drawing |
| Achievable Tolerance | Per drawing |
| Features Supported | Holes, threads, slots, steps, profiles, surface finishes |
| Surface Treatment | As machined; silver / nickel plating; polishing optional |
| Electrical Conductivity | 32–45% IACS depending on grade (per ASTM B702 typical) |
| Density | 13.0–15.0 g/cm³ depending on grade |
| Hardness (HB) | 175–240 depending on grade |
Exact certified properties for your lot are available with material documentation on request.
Applications
- Custom CuW geometries for VCB and switchgear OEMs with proprietary contact designs
- One-off CuW parts for prototypes and engineering samples
- Replacement parts where the original SKU is no longer cataloged and only the drawing or sample exists
- Specialized CuW components for non-switchgear applications (arc-resistant inserts, EDM electrodes, etc.)
Technical Notes
CuW machining is CNC-friendly with carbide tooling. The material behaves more like a brass-tungsten composite than pure copper, slower feed rates, more conservative depth-of-cut, and the tooling sees more wear than equivalent volume in copper.
For complex parts with tight tolerances or thin walls, we offer a design-for-manufacturability review before tooling. Submit your drawing and we'll flag any features that would benefit from a small geometry change, usually saving cost and improving yield. There's no obligation if you'd prefer to machine the drawing as-is.
For prototypes, single-piece runs are routine but disproportionately expensive per part compared to small-batch orders. If you're prototyping with intent to move to production, ordering a small batch (e.g. 10–20 pieces) is often more cost-effective than a single sample.
Sourcing & OEM
Send drawings in DXF / PDF / STEP format with target quantity. We'll confirm feasibility, recommend any geometry tweaks, and quote. MOQ and lead time vary widely with part complexity; contact us with your drawing for a project-specific quote.
Technical FAQ
Common questions about this product.
What is the largest CuW part you can machine?
Maximum part size is bounded by our machining envelope and the practical limits of PM-infiltrated CuW (very large CuW parts are difficult to produce uniformly). Send your drawing for confirmation.
What tolerance can you achieve?
General machining tolerance is per drawing. For tight tolerances (close to industry standard for CuW), specify on the drawing and we'll confirm during quote. CuW is more dimensionally stable than pure copper during machining but less forgiving than steel.
Do you offer design-for-manufacturability feedback?
Yes. Submit your drawing and we'll review for features that affect cost or yield: thin walls, deep pockets, very tight tolerances on non-critical features. There's no obligation to change the design; the feedback is a free first step.
Can you produce prototypes?
Yes, single-piece prototypes are available. For cost reasons, ordering a small batch (e.g. 10–20 pieces) is often more economical per part if you plan to move to production. Discuss your prototyping goals when quoting.
Can you work from a sample instead of a drawing?
Yes. If you have the original part but no drawing, send the sample. We can scan / measure / reverse engineer and produce to a drawing we generate. Discuss IP terms during quoting, we treat customer parts as confidential by default.
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