Industry

Automotive manufacturing

Automotive programs cover machined, stamped, cast and moulded components, from prototypes and aftermarket batches through series production. State the part, the material, the quantity and whether PPAP or IATF 16949 applies. Supplier identification may require additional sourcing.

Typical volumes
Prototype to series (10k+/yr)
Key certification
IATF 16949
Precision features
±0.01–0.05 mm
Approval
PPAP, typically level 3

Overview

Automotive programs combine tight dimensional control with strict process discipline. Series parts for OEMs and Tier-1 suppliers usually require an IATF 16949 certified supply chain, a formal production part approval (PPAP) and stable capability on critical characteristics. Aftermarket, motorsport and restoration parts often run in smaller batches, where flexibility and material traceability matter more than full series documentation.

Türkiye is one of Europe's major automotive production bases, with established supplier clusters around Bursa, Kocaeli and Sakarya serving international OEMs. That supplier depth covers CNC turning and milling, progressive-die stamping, aluminium die casting, forging, plastic injection moulding, heat treatment and surface finishing.

On Metraxio you describe the part, attach drawings and state quantities, material and required certifications. The platform structures these requirements and assesses which facilities are a technical fit before anyone is asked to quote.

Typical parts & components

  • Brackets, housings and covers
  • Shafts, pins, bushings and spacers
  • Suspension and steering parts (e.g. ball joints, uniball housings)
  • Stamped and deep-drawn sheet-metal parts
  • Aluminium die-cast housings
  • Injection-moulded interior and under-hood parts
  • Fasteners, fittings and turned connectors

The processes, materials and requirements below are an editorial reference of what is typical for automotive programs — not a statement about facilities in the Metraxio network.

Common manufacturing processes

  • CNC Machining

    Turned and milled shafts, housings and precision interfaces.

  • Metal Stamping

    High-volume brackets, clips and structural sheet parts.

  • Casting

    Aluminium die-cast housings and covers.

  • Forging

    Highly loaded steering, suspension and drivetrain parts.

  • Injection Molding

    Interior, trim and under-hood plastic parts.

  • Heat Treatment

    Hardening and case hardening of wear and load-bearing parts.

  • Surface Treatment

    Zinc and zinc-nickel plating, e-coating, anodising.

  • Welding & Joining

    Robotic welding of brackets and sub-assemblies.

  • Assembly

    Sub-assemblies delivered ready to install.

Typical materials & grades

Certifications & compliance

What buyers in this industry commonly ask suppliers for. Exact requirements depend on the program, customer and part.

Supplier certifications

  • IATF 16949 Typically required

    Typically required for series supply to OEMs and Tier-1s.

  • ISO 9001 Common

    Baseline for aftermarket, prototype and small-batch work.

  • ISO 14001 Common

    Frequently requested by OEM supplier programs.

Standards & regulations

  • EN 10204 Type 3.1 Common

    Material certificate for metallic raw material.

  • ISO 2768 Common

    General tolerances on drawings.

  • REACH Common

    Substance compliance for parts sold in the EU.

  • RoHS Sometimes requested

    Relevant for electrical and electronic sub-assemblies.

Quality & documentation

  • PPAP (AIAG) with the submission level agreed up front — typically level 3 for series parts.
  • APQP deliverables such as process flow, PFMEA and control plan.
  • Dimensional reports and initial sample inspection reports.
  • Material certificates to EN 10204 3.1 for metallic raw material.
  • IMDS material data submission when supplying OEM programs.
  • Lot traceability from raw material to shipment.

Typical tolerances & surfaces

  • Functional machined features: typically ±0.01–0.05 mm; general dimensions often to ISO 2768-m.
  • Stamped parts: typically ±0.1–0.2 mm depending on thickness and geometry.
  • Die-cast parts: as-cast tolerances per the casting standard, with machined interfaces held tighter.
  • Surface roughness: commonly Ra 0.8–3.2 µm on machined surfaces; bearing and sealing faces finer.
  • Critical characteristics are usually tied to capability targets (e.g. Cpk ≥ 1.33).

Sourcing from Türkiye

Türkiye combines a deep contract-manufacturing base with short routes into Europe. Industrial goods move between Türkiye and the EU under the customs union, so buyers typically avoid EU import duties on qualifying parts.

  • Many European destinations can be reached by road within several days; actual transit depends on origin, destination, customs handling and cargo.
  • Common delivery terms are EXW, FCA and DAP; Metraxio keeps the agreed Incoterm attached to the quotation and order.
  • For series supply, plan time for PPAP and initial samples in addition to tooling lead time.

How Metraxio qualifies suppliers

Every request is checked against each facility's structured profile before any supplier is invited.

  • Hard criteria: the required process (e.g. CNC turning or stamping), the specified material and grade, and required certifications such as IATF 16949.
  • Missing data is not a rejection. If a facility profile does not yet state something, the result is "Needs More Information" rather than "Not Qualified".
  • No match yet? You can continue with Managed Sourcing and the Metraxio team runs supplier discovery for you.
  • Facility identities stay anonymous during the technical assessment.

Example project

How a typical request moves through Metraxio

300 pcs stainless CNC turned parts — V2A · 1.4301 / 1.4305 — delivered DAP.

  • The buyer uploads drawings for two turned suspension parts in 100 and 200 pcs batches.
  • Metraxio recognises 1.4301 and 1.4305 as stainless grades 304 and 303 and structures the requirement: CNC turning, stainless steel, quantity, DAP delivery.
  • The fit assessment shows which facilities are qualified, which need more information and which do not match.
  • The buyer invites qualified facilities to a Supplier RFQ, or hands the job to Managed Sourcing.
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Frequently asked questions

Is IATF 16949 required for every automotive part?

Series supply to OEMs and Tier-1s usually requires IATF 16949 across the supply chain. Aftermarket, prototype and small-batch parts are often sourced from ISO 9001 certified suppliers instead. State the requirement in your project so it is assessed as a hard criterion.

Can I source small aftermarket batches?

Yes. Batches of a few hundred pieces are common for CNC turned and milled parts. Quantity is part of the requirement, so facilities are assessed for fit at your volume.

What documentation can I expect?

Typically dimensional reports and EN 10204 3.1 material certificates. PPAP, control plans and PFMEA are available from suppliers set up for series programs; specify the PPAP level you need.

Which Incoterms are common for deliveries to Europe?

EXW, FCA and DAP are the most common. DAP is popular with buyers who want a delivered price without handling import clearance themselves.

Are supplier names visible during the assessment?

No. Facilities are shown anonymously during the technical assessment. Identities are shared as the engagement progresses.

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Start a Manufacturing Project

Describe your automotive part, attach drawings and see which facilities are a technical fit before you request quotes.