# Custom Parts Manufacturing for Automotive

> Development-speed prototypes and PPAP-ready volume parts for vehicle programs.

- HTML page: https://fabvector.com/industries/automotive (Portuguese: https://fabvector.com/pt/industries/automotive)

## Sourcing pain points we solve

Automotive machining spans two worlds: development, where an EV team needs five inverter housings next week and the design will change twice more, and production, where a bracket must arrive in thousands, identical and documented at a locked price. Most suppliers serve one world and fail the other. Volume programs demand SPC with Cpk ≥ 1.33, PPAP-style documentation and IMDS material declarations that prototype shops cannot produce. Meanwhile blanket-order economics punish any vendor who cannot hold unit price across a model year.

## Typical parts

- Inverter and controller housings (prototype)
- Battery module end plates and busbars
- Sensor housings and radar brackets
- Thermal management cold plates
- Validation and assembly-line fixtures

## Recommended materials

- [aluminum-6061](https://fabvector.com/md/materials/aluminum-6061)
- [carbon-steel-1045](https://fabvector.com/md/materials/carbon-steel-1045)
- [alloy-steel-4140](https://fabvector.com/md/materials/alloy-steel-4140)
- [pom-delrin](https://fabvector.com/md/materials/pom-delrin)
- [copper-c110](https://fabvector.com/md/materials/copper-c110)

## Recommended finishes

- [anodizing-type-ii](https://fabvector.com/md/finishes/anodizing-type-ii)
- [zinc-plating](https://fabvector.com/md/finishes/zinc-plating)
- [electroless-nickel-plating](https://fabvector.com/md/finishes/electroless-nickel-plating)
- [passivation](https://fabvector.com/md/finishes/passivation)

## Certifications & standards

- **IATF 16949**: We understand IATF 16949 supplier expectations — process control, traceability and corrective-action discipline aligned with automotive quality systems.
- **PPAP**: We support PPAP submissions with dimensional reports, material certs and process documentation in the format your SQE expects.
- **ISO 9001**: We understand ISO 9001 forms the baseline for automotive purchasing audits and run documented, repeatable processes accordingly.

_We understand and support these requirements; certification and documentation scope is confirmed per order — we do not claim to hold certifications on this page._

## Buyer questions, answered

### Can a Chinese CNC shop supply automotive parts with PPAP-style documentation?

We deliver the machining-side elements — dimensional results against the drawing, material certs to EN 10204 3.1, FAI and process capability data on critical features — in whatever package your PPAP level needs. What we do not do is claim IATF certification we do not hold; ask for the current certificate list before you build your supplier file.

### What is the right process for prototype EV battery and powertrain housings?

CNC machining from 6061/6063 billet or plate is the standard prototype route before die-cast tooling exists: it holds the sealing-face flatness and thread quality castings need months to reach. Typical prototype housings run 1–20 pieces with cooling channels milled open and welded or gasketed closed.

### Which parts of a vehicle programme fit a machining network best?

Low-to-mid volume precision parts: prototype and pre-series components, motorsport and performance parts, jigs and checking fixtures for the line, and service parts after tooling is retired. High-volume commodity parts belong on dedicated lines — we say so rather than quote them badly.