CNC Machining Medical Device Components — ISO 13485, PEEK & Implant-Grade

Medical Device CNC Machining — ISO 13485 Certified.

From PEEK spinal cages to Ti-6Al-4V bone screws and 316L surgical instruments — Baosheng is the ISO 13485 certified CNC machining manufacturer that delivers biocompatibility documentation, full DHR traceability, and cleanroom-ready packaging. Every time.

ISO 13485:2016
ISO 10993 biocompatibility
Full DHR traceability
Cleanroom packaging
2-hour certified quote

// PRECISION METRICS

Tightest tolerance：± 0.002 mm
Surface finish (Ra)：0.1 μm achievable
CMM inspection：100% critical dims
Traceability：Heat lot → finished part

Ti Grade 23 ELI

ISO 5832-3 · AMS 4930

PEEK Optima®

ISO 13179 · Victrex

316L SS

ISO 5832-1 · ASTM F138

Co-Cr-Mo

ISO 5832-12 · ASTM F75

Ti-6Al-4V ELI

ISO 5832-3 · AMS 4928

PEEK-OPTIMA HA

Hydroxyapatite filled

ISO 13485:2016 · ISO 9001:2015 · ISO 10993 · IATF 16949

ISO 13485

Medical device QMS certified

6+

Implant-grade materials

Ra 0.1μm

Implant surface finish

100%

DHR traceability

Medical Standards

ISO 13485:2016 ISO 9001:2015 ISO 10993 biocompatibility Full DHR documentation Cleanroom packaging NDA before file review

ISO 13485 Certification — What It Actually Covers

ISO 13485 is not a “better ISO 9001.” It’s a fundamentally different QMS framework designed specifically for medical device supply chains — with requirements for traceability, risk management, and sterile barrier protection that commercial CNC suppliers don’t carry.

Work environment control

Documentation of environmental conditions affecting product quality. Temperature, humidity, and particulate monitoring where required for device class. Documented for each lot in the Device History Record.

Controlled environment records

Production process control & traceability

Every production step documented with operator ID, machine ID, date/time, and measurement results. Raw material lot tied to finished device serial number. Chain of custody maintained from raw billet to packaged component.

Device History Record (DHR)

Contamination control

Documented procedures for prevention of contamination during machining, post-processing, and packaging. Separate handling paths for implant-grade and non-implant components. Coolant and lubricant biocompatibility documented where contact with implant surface occurs.

Contamination control procedures

Non-conforming product handling

Non-conforming components are tagged, quarantined, and dispositioned via formal NCR process before any batch is released. Corrective action root-cause documented. Customer notification within 24 hours of detection on released product.

NCR + CAPA documentation

Customer communication — design review

Written DFM review issued before production start identifies biocompatibility risks, surface finish requirements, sterilization compatibility, and tolerance feasibility. Design review documented and retained as part of the DHR.

Design review record

ISO 13485:2016

Medical Device QMS

Full quality management system for design, production, installation, and servicing of medical devices. Annual third-party audit. Scope covers CNC machining and assembly of medical device components.

Primary cert
Annual audit

ISO 10993

Biocompatibility

Biological evaluation framework for materials in contact with human tissue or body fluids. Material selection, surface finish, and residual manufacturing substance documentation aligned to ISO 10993-1 risk assessment pathway.

Implant materials
ISO 10993-1

21 CFR Part 820

FDA QSR Alignment

Our ISO 13485 QMS is aligned to the FDA Quality System Regulation. DHR documentation supports 510(k) and PMA regulatory submissions. Documentation available in FDA-compatible formats on request.

510(k) support
PMA ready

MDR 2017/745

EU Medical Device Reg.

Material traceability and biocompatibility documentation aligned to EU MDR requirements. UDI-compatible lot traceability. CE marking technical file support documentation available.

EU MDR
UDI compatible

Implant-Grade & Medical CNC Materials

Not every material grade is appropriate for medical device use. The difference between “stainless steel” and “ASTM F138 implant-grade 316L SS” is the difference between biocompatibility and a regulatory failure. Here’s what we stock and why each grade matters.

Ti Grade 23

// Ti-6Al-4V ELI · ISO 5832-3

Tensile strength：860 MPa
Biocompatibility：Excellent
Corrosion resistance：Excellent
Machinability：Difficult

Applications: bone screws · spinal cages · hip stems · trauma plates · dental implants · orthopaedic fixtures

ELI = Extra-Low Interstitial — reduced O₂, N₂, C, Fe for superior fracture toughness in implant service. ISO 10993 compliant.

PEEK Optima®

// ISO 13179-1 · Victrex LT1

Tensile strength：100 MPa
Radiolucency：Radiolucent
Service temp.：250 °C
Machinability：Moderate

Applications: spinal fusion cages · total disc replacement · cranial implants · structural orthopaedic components

Radiolucent — does not artifact on MRI or CT. Elastic modulus closer to cortical bone than titanium (reduces stress shielding).

316L Stainless

// ASTM F138 · ISO 5832-1

Tensile strength：485 MPa
Corrosion resistance：Excellent
Passivation：ASTM A967
Machinability：Moderate

Applications: surgical instruments · retractors · trocars · laparoscopic tools · non-implant device housings · dental instruments

ASTM F138 is the implant-specific grade — lower carbon content (C < 0.03%) prevents sensitization at surgical sterilisation temperatures.

Co-Cr-Mo

// ASTM F75 / F799 · ISO 5832-12

Tensile strength：897 MPa
Wear resistance：Excellent
Hardness：HRC 35–40
Machinability：Very difficult

Applications: total knee femoral components · total hip heads · spinal disc arthroplasty · dental prosthetics · high-wear joint surfaces

Cobalt ion release is a known concern in total arthroplasty. Surface finish Ra ≤ 0.025μm required on articulating surfaces to minimise wear particle generation.

Ti Grade 4

// CP Titanium · ASTM F67

Tensile strength：550 MPa
Osseointegration：Excellent
Purity：CP (vanadium-free)
Machinability：Moderate

Applications: dental implants · abutments · dental crowns · orthopaedic screws · hearing implant housings

Vanadium-free — preferred for dental applications where V leaching has been studied. Highest biocompatibility of all commercial titanium grades.

UHMWPE

// GUR 1020/1050 · ISO 5834-2

Mol. weight：>3.5M g/mol
Wear resistance：Excellent
Impact resistance：Excellent
Machinability：Good

Applications: total knee tibial inserts · total hip acetabular liners · spinal disc nucleus · shoulder glenoid components

Must specify Ticona GUR 1020 or GUR 1050 medical-grade resin. Cross-linked (XLPE) variants available on request for reduced oxidation in vivo.

Biocompatibility & Regulatory Compliance Matrix

Material	ISO 10993 compliant	ASTM / ISO standard	Implant contact	Blood contact	MRI compatible	Sterilization
Ti Grade 23 ELI	✓ Yes	ISO 5832-3	✓ Yes	✓ Yes	✓ Conditional	All methods
PEEK Optima®	✓ Yes	ISO 13179-1	✓ Yes	✓ Yes	✓ Radiolucent	Autoclave / EO / gamma
316L SS (F138)	✓ Yes	ASTM F138	✓ Short-term	✓ Yes	△ Artifact possible	Autoclave / EO
Co-Cr-Mo (F75)	✓ Yes	ASTM F75	✓ Long-term	✓ Yes	△ Artifact possible	Autoclave / EO / gamma
Ti Grade 4 CP	✓ Yes	ASTM F67	✓ Yes	✓ Yes	✓ Conditional	All methods
UHMWPE (GUR)	✓ Yes	ISO 5834-2	✓ Long-term	✗ Not recommended	✓ Radiolucent	Gamma / EO (not autoclave)

Specify your device class and contact duration when requesting a quote — we’ll confirm material selection against ISO 10993 risk assessment pathway.

Medical Device Components We Machine

Every device class has distinct precision, surface finish, and documentation requirements. Here’s how our CNC capability maps to the major medical device subsystems.

Class III · Implantable

Orthopaedic Implants

Bone screws, spinal fusion cages, trauma plates, intramedullary nails, hip stems, and knee components. Full DHR, lot-specific mill certs, and biocompatibility documentation required on every lot.

Materials：Ti ELI · Co-Cr · PEEK
Surface Ra：0.1–0.4μm implant
Tolerance：±0.005–0.010mm
Sterilization：All methods compatible

Class II · Reusable / Disposable

Surgical Instruments

Scissors, retractors, trocars, laparoscopic graspers, and endoscopic components. Surface finish critical for cleanability. Autoclave compatibility requires specific material and finishing specifications.

Materials：316L SS · 17-4 PH
Surface Ra：≤0.4μm (cleanable)
Passivation：ASTM A967 / AMS 2700
Sterilization：Autoclave 134°C

Class IIb · Implantable

Dental Implants & Prosthetics

Dental implant fixtures, abutments, healing caps, and CAD/CAM prosthetic components. Surface texture requirements (SLA, machined) affect osseointegration rate — our DFM review includes surface strategy guidance.

Materials：Ti Grade 4 · Zirconia
Thread tolerance：ISO 6g/6H precision
Hex interface：±0.003mm
Surface：Machined / SLA

Class I / IIa · Device housing

Imaging & Diagnostic Devices

Ultrasound transducer housings, MRI coil frames, CT detector mounts, and endoscope handles. Non-magnetic materials required for MRI applications. Electrical grounding paths often integrated into structural components.

Materials：Al 6061 · PEEK · Delrin
MRI compatibility：Non-magnetic verified
Tolerance：±0.025mm housing
Finish：Anodize / chem-film

Class II / III · Combination device

Drug Delivery Devices

Auto-injector mechanisms, pump housings, insulin pen components, intravascular catheter tips, and microfluidic manifolds. Drug contact surfaces require specific materials and extractable/leachable documentation under ISO 10993-18.

Materials：316L · PEEK · Ti
E&L documentation：ISO 10993-18
Surface Ra：≤0.2μm drug contact
Passivation：ASTM A967 required

Class IIa · Wearable / Implantable

Wearables & Minimally Invasive

Continuous glucose monitor housings, cardiac monitor enclosures, robotic surgery tool tips, and laparoscopic instrument components. Miniaturisation is the challenge — features <0.5mm require micro milling strategies. Small batch friendly — no MOQ.

Min feature：<0.5mm (micro mill)
Materials：Ti · PEEK · 316L
Lot size：1 prototype to 10K+
IP protection：NDA standard

Device History Record — How We Build Yours

The DHR is the backbone of FDA 21 CFR 820.184 compliance. Here’s how we build a complete, audit-ready DHR for every medical device component we manufacture.

Design input review & DFM

Engineer reviews drawing, material spec, device class, sterilization method, and biocompatibility requirements. Design review documented. Risk items flagged. DFM report issued in writing within 2 hours.

Design review record
DFM report

Material verification & traceability

Incoming material lot verified against EN 10204 3.1 or 3.2 mill certificate. Chemical composition and mechanical properties confirmed against ASTM/ISO specification. Heat number recorded on job traveller — tied to your order and device serial number.

Mill certificate
Incoming inspection record

In-process records & SPC

Operator ID, machine ID, date/time, tool lot, and measurement results recorded at each operation. First-article verified before batch continues. SPC applied on critical characteristics — any out-of-control condition triggers immediate work-stop.

In-process records
SPC charts

CMM dimensional inspection

100% CMM measurement of all critical GD&T callouts. Temperature-stabilised measurement room. Actual vs. nominal report generated per-part or per-batch. Non-conforming parts quarantined — NCR raised and dispositioned before batch released.

CMM dimensional report
NCR records (if any)

Cleanroom packaging & labelling

Implant-grade and sterile-barrier components packaged per device class requirements. Cleanroom (ISO Class 7 equivalent) packaging area for implant components. Lot number, material, expiry date, and sterilisation instructions on primary label where required.

Packaging inspection record
Label verification

Shipment with complete DHR package

Full DHR package — mill cert, CMM report, in-process records, NCR disposition (if any), packaging inspection, and Certificate of Conformance — enclosed with shipment. Digital copy emailed at dispatch. Records retained for device lifetime + 2 years minimum.

Certificate of Conformance
Full DHR package

Medical CNC Supplier Comparison

Requirement	Baosheng	General CNC supplier
ISO 13485 certification	Certified, annual audit	Not certified
Full DHR documentation	Standard, every order	Not standard
Implant-grade material stock	In stock, 6+ grades	Not stocked
Biocompatibility docs	ISO 10993 aligned	Not available
Cleanroom packaging	ISO Class 7 available	Not available
CMM inspection report	100% critical dims	Spot check only
PEEK Optima machining	Dedicated protocols	Commercial PEEK only
NDA before file review	Standard, same day	On request
10-year record retention	QMS mandated	Not guaranteed

NDA signed before file review · 2-hour response

Surface Finishing for Medical Device Components

Surface finish in medical devices is not an aesthetic choice — it determines cleanability, osseointegration, corrosion resistance, and sterilization compatibility. Here’s the clinical rationale behind each finish specification.

Standard implant finish

Ra ≤ 0.4μm — Machined

// As-machined, fine passes · Standard surgical instrument finish

Required for cleanable surgical instruments (EN ISO 17664)
Achievable on stainless 316L and titanium with single finishing pass
Autoclave compatible — no special finishing required
Baseline requirement for most Class I/II device surfaces
Verify on drawing: “Ra ≤ 0.4μm on all external surfaces”

Implant articulating surfaces

Ra ≤ 0.025μm — Mirror Polish

// Hand polished · Diamond compound · Electropolish option

Required for articulating joint surfaces (knee, hip, spine disc)
Reduces wear particle generation — critical for Co-Cr-Mo
Electropolishing achieves Ra ≤ 0.1μm on stainless in bores
Full surface: manual diamond compound + vibratory finishing
Specify: Ra value, measurement direction, and reference standard

Bone contact / osseointegration

SLA — Sandblasted Acid Etched

// Sa 1.0–2.0μm · Controlled roughness · Ti surfaces only

Promotes osseointegration — increases bone cell attachment area
Applied to titanium implant surfaces in contact with bone
Process: Al₂O₃ bead blast → HCl/H₂SO₄ acid etch
ISO 14434 surface characterisation documentation
NOT applied to articulating, threading, or precision-fit surfaces

Corrosion protection

Passivation

// ASTM A967 / AMS 2700 · 316L and 17-4 PH SS

Removes free iron from stainless surface — forms passive chromium oxide layer
Critical for 316L surgical instruments — prevents rust in autoclave
Citric acid (ASTM A967 Method C) — environmentally preferred over nitric
Tested per ASTM A967 — water immersion test or salt spray
Dimension change: negligible (<0.0001mm) — no tolerance impact

Anodizing for titanium

Anodic Oxidation (Type II)

// Colour-coded implants · Ti identification · ASTM F86

Colour codes implant sizes without paint — critical for OR identification
Improves corrosion resistance of titanium in physiological environment
Does NOT improve osseointegration — SLA is used for that
ASTM F86 standard for anodising surgical implants
Dimensional change: +1–5μm per side — flag tight-tolerance features

PEEK post-processing

Plasma Activation (PEEK)

// PEEK Optima surface treatment · HA coating prep

Modifies PEEK surface energy — improves bone cell adhesion
Required before hydroxyapatite (HA) coating deposition
Argon / oxygen plasma treatment — no dimensional change
Increases wettability from >70° contact angle to <10°
Available for PEEK-OPTIMA HA Enhanced grade preparation

Material / Finish	Steam autoclave (134°C)	Ethylene oxide (EO)	Gamma irradiation	Electron beam (e-beam)	Hydrogen peroxide plasma
Ti Grade 23 ELI	✓ Excellent	✓ Compatible	✓ Compatible	✓ Compatible	✓ Compatible
PEEK Optima® (neat)	✓ Up to 134°C	✓ Compatible	△ Oxidation risk	△ Verify dose	✓ Compatible
316L SS (passivated)	✓ Excellent	✓ Compatible	△ Check grade	✓ Compatible	✓ Compatible
Co-Cr-Mo (F75)	✓ Excellent	✓ Compatible	✓ Compatible	✓ Compatible	✓ Compatible
UHMWPE (GUR 1020)	✗ Degrades	✓ Compatible	△ XLPE preferred	✓ Compatible	✓ Compatible
Anodised Ti	✓ Stable	✓ Compatible	✓ Compatible	✓ Compatible	✓ Compatible

Every Document Your Regulatory Submission Needs

Medical device regulatory submissions live and die on documentation completeness. Here’s every deliverable Baosheng provides — and the standard it conforms to.

Mill Certificate

EN 10204 Type 3.1 / 3.2 · ASTM / ISO spec

Chemical composition, mechanical properties, heat number. Issued by raw material mill — not a distributor copy. Type 3.2 (independent inspection authority) available on request.

Included with every order

CMM Inspection Report

ISO 10360 · Per-part or batch statistical

Actual vs. nominal for every GD&T callout. Zeiss/Renishaw CMM, accuracy ±0.0008mm. Temperature-stabilised room. Probe calibration records attached.

100% critical dimensions

Device History Record

FDA 21 CFR 820.184 · ISO 13485 §7.5

Complete production record: operator ID, machine, tools, date/time, measurements. Material lot tied to device serial. Available for 10-year retention. FDA audit-ready format.

Standard on all medical orders

Certificate of Conformance

Signed declaration of conformity

Signed declaration that components meet drawing, material spec, and QMS requirements. References lot number, quantity, inspection results, and applicable standards. Issued by QA manager.

Included with shipment

Biocompatibility Declaration

ISO 10993-1 · ISO 10993-18

Material biocompatibility declaration referencing ISO 10993 risk assessment pathway. Residual manufacturing substances (coolants, lubricants) listed where device contact occurs. Available for implant and skin-contact applications.

On request for implant orders

First Article Inspection (FAI)

AS9102 / Customer-defined

Full dimensional report on first-off production part. Includes material verification, functional test results where applicable, and conformance statement. Required at new part number release and after engineering changes.

Standard on new part numbers

All documents delivered digitally with shipment. 10-year record retention in our QMS.

What Drives Medical Device CNC Machining Cost

Medical device CNC machining costs more than commercial parts — for clinically defensible reasons. Here’s the honest breakdown of every cost driver.

Implant-grade material premium

PEEK Optima® costs 15–20× more per kg than industrial PEEK. Ti Grade 23 ELI is 25–40% more expensive than Grade 5 Ti-6Al-4V due to tighter interstitial content controls. Co-Cr-Mo is among the most expensive machinable alloys. The premium is in the material, not the machining — and it’s non-negotiable for implant use.

Highest cost driver

Documentation & quality overhead

A commercial CNC part might have 5 minutes of inspection and documentation time. An ISO 13485 medical device component with full DHR, CMM, biocompatibility declaration, and CoC may require 60–120 minutes of quality overhead per lot. This is the cost of regulatory compliance — and it’s what makes the part certifiable.

High cost driver

Surface finish to Ra 0.1μm

Achieving Ra ≤ 0.1μm on implant articulating surfaces requires hand polishing with diamond compound — typically 20–60 minutes of manual labour per part. Mirror finishing on complex 3D surfaces (femoral condyles, spinal end plates) takes longer. Our DFM review identifies where mirror finish is clinically required vs where Ra 0.4μm is sufficient.

Medium-high cost

Machining difficult biomaterials

Co-Cr-Mo machinability index is approximately 25 (vs 100 for free-cutting steel). PEEK Optima® requires dedicated tooling and specific cutting parameters to avoid surface damage and residual stress. Both require process validation and dedicated tooling programs that add to unit cost at low quantities.

Medium cost driver

Cleanroom packaging

ISO Class 7 cleanroom packaging for implant components adds a controlled-environment packaging operation with gown protocol, particle monitoring records, and sterile barrier validation documentation. Per-unit cost is modest — but the infrastructure cost is real and reflected in pricing.

Lower cost driver

316L surgical instrument prototype (1–10 pcs)

From $45_{/ pc}

316L SS · 3-axis · Ra ≤ 0.4μm · passivated · CMM report · mill cert · 3–5 day lead

Ti Grade 23 orthopaedic implant (1–5 pcs)

From $280_{/ pc}

ELI titanium · 5-axis · Ra ≤ 0.4μm · full DHR · CMM 100% · biocompatibility doc · 7–10 day lead

PEEK Optima spinal cage (1–3 pcs)

From $380_{/ pc}

Victrex PEEK-Optima · 5-axis · Ra ≤ 0.4μm · full DHR · ISO 13485 documentation · 8–12 day lead

Production run with DHR (50–500 pcs)

Volume pricing_{+ full DHR package}

Per-lot mill cert · SPC monitoring · CMM batch report · CoC · cleanroom packaging

Free Medical DFM Review — Every Quote

Our medical device DFM review covers surface finish vs. device class requirements, sterilization compatibility, biocompatibility risk, material selection for patient contact class, and documentation scope. Written report issued before you commit. Average DFM-driven savings on medical CNC: 15–30% per component.

CNC Machining Medical Device Components — Questions Answered

Are you ISO 13485 certified for medical device CNC machining?

Yes — Baosheng holds ISO 13485:2016 certification covering the design and manufacture of medical device components. Our QMS is audited annually by an accredited third-party body. Scope covers CNC machining, surface finishing, and assembly of implant-grade and non-implant medical device components. Certificate available on request.

Can you machine PEEK Optima® for spinal implants?

Yes — with Victrex PEEK-OPTIMA® implant-grade resin (LT1 or LT3), not industrial PEEK. We maintain dedicated tooling protocols for implant-grade PEEK to avoid surface damage, residual stress, and contamination. We do NOT substitute commercial PEEK for implant applications. Full material traceability from Victrex lot certificate to finished component.

What biocompatibility documentation do you provide?

We provide a material biocompatibility declaration referencing ISO 10993-1 risk assessment pathway for each implant-grade material. For drug-contact or skin-contact surfaces, an extractables and leachables (E&L) assessment per ISO 10993-18 is available. We document all manufacturing chemicals (coolants, lubricants) that contact device surfaces and confirm biocompatibility.

Do you provide Device History Records (DHR) for FDA compliance?

Yes — standard on all medical orders. Our DHR includes: operator and machine identification, material lot number, in-process measurement records, CMM inspection results, NCR disposition (if applicable), packaging inspection, and Certificate of Conformance. Format is compatible with FDA 21 CFR 820.184 audit requirements. Records retained for 10 years minimum.

What surface finish can you achieve on implant components?

Ra ≤ 0.025μm on articulating surfaces using diamond compound hand polishing. Ra ≤ 0.1μm on implant body surfaces via fine finishing passes. Ra ≤ 0.4μm standard on surgical instrument surfaces (EN ISO 17664 compliant). Specify your functional requirement — articulating, bone contact, instrument, or cosmetic — and we’ll confirm the appropriate finish strategy in the DFM review.

Can you machine Co-Cr-Mo for total joint replacement components?

Yes — ASTM F75 cast and ASTM F799 wrought Co-Cr-Mo are available. Co-Cr-Mo has a machinability index of approximately 25 — it requires dedicated carbide tooling, slow feed rates, and aggressive coolant management. Tool life is 3–5× shorter than stainless machining. This is reflected transparently in quoting. CMM verification of articulating surface dimensions and Ra measurement documentation included.

Do you offer cleanroom packaging for implantable components?

Yes — ISO Class 7 equivalent cleanroom packaging area for implant-grade components. Parts are visually inspected, cleaned per validated procedure, and packaged in double sterile barrier (Tyvek/film) with lot labelling. Packaging inspection records form part of the DHR. EO, gamma, and e-beam sterilization-compatible primary packaging available.

What is the minimum order for medical CNC machined components?

No minimum order quantity. We machine single prototypes and first-article components every day under full ISO 13485 documentation requirements. The quality overhead (DHR, CMM, CoC) applies to all quantities equally — which means the per-unit quality cost at 1 piece is higher than at 100 pieces, but every single prototype receives the same documentation standard as a production lot.