# 5-Axis CNC Machined Stainless Steel and Aluminum Prototypes

Category: Precision CNC Machined Parts
URL: https://www.machined-parts-factory.com/products/precision-cnc-machined-parts/5-axis-cnc-machined-stainless-steel-and-aluminum-prototypes/

This service produces functional prototypes and pre-production parts on 5-axis CNC machines in stainless steel (303, 304, 316, 17-4PH), aluminum (6061, 7075), steel, brass and plastics. Complex geometry is machined in few setups with critical features down to ±0.01 mm. It is designed for engineers in automotive, medical, robotics and motorcycle development who need real-material parts quickly.

- Single-piece prototypes with no tooling charge
- Real production materials for valid testing
- DFM review flagged before cutting
- Typically 3–7 working days for prototypes

## Specifications
| Spec | Value |
|---|---|
| Process | 5-axis CNC milling, CNC turning |
| Materials | Stainless steel 303/304/316/17-4PH; aluminum 6061/7075; brass; plastics |
| Tolerance | ±0.05 mm standard; down to ±0.01 mm on critical features |
| Surface Finish | As-machined, bead blast, anodizing, passivation per drawing |
| MOQ | 1 piece |
| Drawing Formats | STEP, IGES, X_T, STL, DWG, DXF, PDF |
| Lead Time | Prototypes ~3–7 working days; production typically 10–20 working days |
| Inspection | First-article + 100% critical-dimension inspection; CMM report on request |
| Certification | ISO 9001 quality management |

## How we make it
Prototype jobs move straight from your STEP file to CAM; we review manufacturability and flag thin walls, deep pockets or sharp internal corners before cutting. 5-axis positioning lets us reach angled features without custom fixtures, which is what makes single-piece orders affordable. When a design will later go to production in another process, such as casting, we can machine to that process's geometry so test results transfer.

Aluminum 6061 is fastest to machine and keeps prototype cost and time down. Stainless 304 and 316 are slower to cut but represent the real corrosion and strength behavior if the final part will be steel. 17-4PH can be heat treated for high strength. Finishes are applied as specified, from bead blast and anodizing to passivation, or skipped entirely for fit-check parts.

Each prototype receives a first-article inspection with key dimensions reported, and full CMM reports are available when you need data for design validation. Prototypes typically ship in 3–7 working days, depending on complexity and finish. Typical uses include fit and function testing, engineering validation builds, pilot runs, trade-show samples and bridge production before tooling.

## FAQ
### How fast can I get a CNC prototype?
Quotes are returned within 24 hours on business days. Machined prototypes typically ship in 3–7 working days after drawing approval, depending on complexity, material and finish. Simple aluminum parts without coating tend to be at the short end; stainless parts with plating or heat treatment take longer.

### Can a prototype be made in a different material than production?
Yes. Many customers prototype in 6061 aluminum to check fit and then switch to stainless or steel for production. If the test involves strength, wear or corrosion, prototype in the final material, since results in aluminum will not transfer reliably.

### How do I get a quote for 5-axis cnc machined stainless steel and aluminum prototypes?
Send a 3D model (STEP or IGES) and a 2D drawing with tolerances, material, finish and quantity through the quote form or by email. An engineer replies within 24 hours on business days with price, lead time and any DFM suggestions.

Request a quote: https://www.machined-parts-factory.com/contact/#rfq — inquiry@machined-parts-factory.com — WhatsApp +86 176 2154 1688