Medical sheet metal refers to precision-fabricated metal components — produced from flat metal sheet stock, typically 0.5 mm to 6 mm thick — that are used in the design, construction, or housing of medical devices, diagnostic equipment, surgical instruments, and laboratory apparatus. Unlike general industrial fabrication, medical sheet metal manufacturing is governed by strict regulatory frameworks, biocompatibility requirements, and traceability standards that span the entire supply chain.
According to ISO 13485:2016 — Medical Devices: Quality Management Systems — Requirements for Regulatory Purposes, suppliers of components used in medical devices must maintain documented manufacturing processes, incoming material controls, and robust non-conformance systems. This places the burden of compliance on the fabrication partner — not just the OEM — making the choice of medical sheet metal manufacturer a critical quality decision.
At Zhejiang Jiafeng, we support medical device OEMs through our vertically integrated sheet metal manufacturing, precision machining, and electromechanical integration capabilities — all under one roof in Jiashan, Zhejiang, China.
Medical sheet metal components must satisfy overlapping regulatory requirements depending on the target market, device class, and application. The table below consolidates the primary standards referenced by global medical device OEMs and their auditors.
Sources: ISO 13485:2016; FDA 21 CFR Part 820 (2024 harmonization update); EU MDR 2017/745; ISO 10993-1:2018; ASTM A967-17; IEC 60601-1:2005+A1:2012+A2:2020.
Material choice directly determines biocompatibility, sterilization compatibility, corrosion performance, and cost. The following comparison covers the alloys most commonly specified in medical device engineering. Data are aligned with published values in ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and relevant ASTM/EN material standards.
References: ASM Handbook Vol. 2 (ASM International, 2022 ed.); ASTM A276/A276M; EN 10088-1; ISO 5832-2; ISO 10993-1:2018. UTS values reflect annealed or standard temper conditions.
Medical device design engineers specify sheet metal for structural enclosures, functional trays, and equipment housings across every clinical setting. Below are representative product categories Jiafeng fabricates for OEM medical customers.
CT, MRI gantry panels, X-ray tube shields, and ultrasound cart enclosures in 304 SS or powder-coated cold-rolled steel. EMC shielding compliance per IEC 60601-1-2 achievable with aperture control and conductive gasket integration.
Validated sterile trays in 316L SS with electropolished interior surfaces (Ra ≤ 0.4 µm). Compatible with autoclave steam sterilization at 134 °C / 3 bar, per EN ISO 17665-1 cycle requirements.
Dispensing robot frames, centrifuge housings, and analytical instrument enclosures. Precision CNC-bent panels with ±0.1 mm flatness critical for optical alignment in laboratory systems.
Ventilator enclosures, ECG/EEG chassis, and bedside monitor frames requiring lightweight aluminium (5052-H32) for mobile ICU applications. Anodised finish for wipe-down disinfectant compatibility.
Chair arm brackets, tray tables, and cabinet frameworks in 304 SS or galvanised steel with primer and antimicrobial powder coat, designed for daily disinfectant exposure.
Exoskeleton frames, traction unit panels, and physiotherapy equipment enclosures. Structural load analysis support available; we work from customer FEA data to ensure design-for-manufacture alignment.
Every medical sheet metal order at Jiafeng follows a documented, traceable process aligned with the process validation principles of ISO 13485, Clause 7.5.6 (Validation of processes for production and service provision). The workflow below maps each stage to its corresponding quality output.
Process aligned with ISO 13485:2016, Clauses 7.5.1–7.5.6 (production and service provision, including validation). Surface roughness criteria per ISO 4287; salt spray per ISO 9227.
Surface finish is arguably the single most scrutinized attribute of medical sheet metal components. Rough surfaces harbor biofilm; inadequate passivation accelerates pitting corrosion in chloride-rich clinical environments. The following table reflects current accepted practice per the literature and standards most cited by medical device quality engineers.
Ra values per ISO 4287:1997. References: ASTM A967-17 (passivation); ASTM B912-02 (electropolishing); ISO 10993-1:2018 (biocompatibility evaluation). See also: Stainless Steel for Medical Devices, Euro Inox Technical Brochure No. 11 (2014).
Laser cutting, CNC bending, welding, passivation, CMM inspection, and electromechanical assembly — all under one roof. No sub-contracted processes means full traceability and a single quality responsibility chain.
5-axis machining centres, Salvagnini auto-benders, and high-accuracy CMMs (E=1.9+3L/1000 µm) ensure medical-grade dimensional consistency from first prototype to 10,000-unit production run. See our full precision machining capabilities.
Mill certificates, first-article inspection reports, CMM dimensional records, passivation test reports, salt spray results, and RoHS/REACH compliance declarations supplied with every medical batch — supporting your ISO 13485 technical file.
From DFM review and prototype to full production — our OEM/ODM team provides engineering input, tooling, and certified supply for medical device brands globally.
In-house electroplating, passivation, powder coating, and ceramic conversion lines support every medical surface specification in a single facility — eliminating the quality risks of outsourcing surface treatment.
We support clinical-trial prototype quantities through high-volume production. Pricing is transparent; lead times for standard medical sheet metal parts typically run 2–4 weeks from drawing approval.
316L contains 2–3% molybdenum, which significantly improves resistance to chloride pitting — the primary corrosion mechanism in sterilization environments and surgical settings where saline solutions are present. Per ASTM A276 and EN 10088-1, the pitting resistance equivalent number (PREN) of 316L (≈26) is substantially higher than 304 (≈18). For components in direct patient contact or repeated autoclave cycling, 316L is the engineering default; 304 is acceptable for indirect-contact structural components.
Yes. We provide mill certificates (CoC) for every material heat number, maintain a lot traceability register linking raw material to finished part serial number, and issue a Certificate of Conformance with each shipment. This documentation package is designed to satisfy ISO 13485:2016 Clause 7.5.9 (traceability) and FDA 21 CFR Part 820 Subpart M requirements.
Our electropolishing process routinely achieves Ra ≤ 0.2 µm on 316L stainless steel, measured per ISO 4287 with a contact profilometer. Mechanical polishing achieves Ra 0.4–0.8 µm. Research by Ronner et al. (2003, Journal of Hospital Infection) and later systematic reviews confirm that surfaces below Ra 0.8 µm significantly reduce bacterial adhesion — the threshold we target for all cleanable medical surfaces.
Yes. Individual poly-bagged components, double-bag cleanroom packaging, and anti-static ESD packaging options are available. For customers requiring particulate-controlled environments, we can arrange third-party cleanroom packaging integration. Packaging specifications are agreed at the quotation stage and documented in the Product Quality Plan (PQP).
Standard medical sheet metal prototypes (1–10 pieces, 304/316L SS): 2–3 weeks from approved drawing. First production batch (50–500 pieces): 3–5 weeks. Volume production with surface treatment and full inspection: 4–8 weeks depending on complexity. Expedite service available for clinical-trial timelines — discuss with our sales team when placing your inquiry at our contact page.
Medical sheet metal is one part of a fully integrated solution. Explore Jiafeng's complementary services that support your medical device program end-to-end.
