Guides / Sourcing
The Certifications That Change Which PEEK Requests You See
September 24, 2026
Sources: manufacturer datasheets and published standards. See editorial standards.
Certificates are expensive, and in plastics machining they are not equally useful. This is what each one actually changes about the requests that reach you, written from the buyer side of the conversation.
ISO 9001: the floor
What it says: you document and control your processes.
What it does not say: anything about plastics, about PEEK, about contamination control, or about whether your tooling has been in steel.
Most industrial buyers treat ISO 9001 as a baseline rather than a reason to choose you. Having it rarely wins the job. Not having it loses some enquiries at the filter stage, particularly from larger companies whose procurement rules are written by someone who never sees the part.
Worth holding if you sell into corporate procurement at all. Not worth stretching for if your work comes from engineers who visit or from niche matching, where capability questions carry more weight.
ISO 13485: the one that opens a closed door
What it says: you run a quality system built for medical devices, with traceability, change control and documented process validation.
This is the certificate that genuinely changes which requests exist for you. Finished device components under a manufacturer quality system usually require a supplier operating under one too. Without it, those requests never reach your inbox.
What it does not cover: instruments, trials, sizers, fixtures, trays and tooling. A large share of medical PEEK work sits in that space and does not require the certificate, only clean handling and a documented process.
Worth holding if you want implant adjacent or device component work and can carry the documentation load. Not worth it if your medical work is instruments and fixtures, where clean handling, ultrasonic cleaning, double bagging and a certificate of conformance get you most of the same jobs.
AS9100: narrow and specific
Aerospace. If you are not already in that supply chain, this certificate rarely opens PEEK work on its own, because the PEEK content in aerospace assemblies is smaller than in medical or semiconductor.
Worth holding if aerospace is already a meaningful share of your business. Otherwise it is an expensive way to signal seriousness.
Cleanroom packing: not a certificate, often the decider
No registrar, no annual audit, and frequently the thing that decides a semiconductor request.
A controlled cleaning and packing step, double bagging, and a stated process for deburring without metal tools will win more fab work than any certificate. Buyers ask about it directly, and the shops that can describe their process win, because the alternative is a part that measures correctly and gets rejected at incoming inspection.
Worth building if you want semiconductor work. It costs process discipline and a modest setup rather than an audit cycle.
What a fab or a device maker actually asks
In our experience of the requests that come through, the order of importance looks like this:
- Virgin resin, no regrind, stated explicitly
- Lot traceability and a certificate that travels with the parts
- No metal contamination in handling or deburring
- A described cleaning process, with the final rinse named
- Packing, from double bagged upward
- Then, and only then, the certificate on the wall
Which is to say: three of the six cost you process discipline rather than money, and they move more requests than the certificate does.
The honest summary for a small shop
If you machine plastics well and want more PEEK work, the ranked spend is usually: contamination control and packing first, ISO 9001 if procurement departments are in your path, ISO 13485 only when you have decided to chase device components, AS9100 only if aerospace already pays your bills.
And in every case, say plainly what you hold and what you do not. Buyers filter on it either way, and an honest no keeps you on the list for the work you can actually win. That is also the eighth of the checks we use before a shop sees a request.
Register your shop with what you hold today. The requests are filtered to match it.
See also: medical PEEK work without ISO 13485, and what a shop can say.
Frequently asked questions
Is ISO 9001 enough for PEEK work?
For industrial, semiconductor adjacent and general precision work, usually yes. It is a floor rather than a differentiator, because it says nothing about plastics or about the specific handling PEEK needs.
Does ISO 13485 pay for itself in a small shop?
It depends entirely on whether you want medical device components or are content with instruments, trials and fixtures. The certificate opens a category of work that is otherwise closed, and it carries real ongoing cost in documentation and audits.
Can we do semiconductor work without any certification?
Often yes. Fabs care more about virgin resin, traceability, contamination control, cleaning and packing than about a certificate. Demonstrated process discipline wins that work more reliably than a logo does.
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