Precision automotive CNC machining
INDUSTRIES // AUTOMOTIVE

CNC Machining for the Automotive Industry in Mexico

Instant quoting. IATF 16949 certified network. Tier 1 and Tier 2 parts from a single piece to serial production, with tolerances from ±0.005 mm and full PPAP support.

WHY RADII

Why Radii for automotive?

Radii is the primary provider of automotive machining in Mexico: a platform that connects you with an audited network of 200+ manufacturing partners certified to IATF 16949 and ISO 9001:2015, with full PPAP capability. Quote in minutes, not days.

IATF 16949
Tier 1 / Tier 2
PPAP Level 5
Cpk ≥ 1.33
CERTIFICATIONS

Certifications & Quality Control

IATF 16949 — Global Automotive Standard

Automotive machining through Radii is executed by manufacturing partners with active IATF 16949 certification. Ensures documented processes, statistical process control (SPC), and full lot traceability on every part delivered.

ISO 9001:2015 — Quality Management System

Quality management system verified at every partner in the network. Continuous improvement policies, internal audits, and documented management review of performance and non-conformities.

Radii 50-Point Audit

Every manufacturing partner passes a 50-point audit before receiving a single order. We evaluate technical capacity, metrology, traceability, financial health, and delivery performance. Annual re-audit required.

PPAP · APQP · SPC · MSA · FAI

Full documentation per part: control plan, FMEA, run-at-rate, process capability (Cpk ≥ 1.33), Gage R&R studies, PSW, and first article inspection. PPAP levels 1 through 5 per customer requirement.

CAPABILITIES

Automotive Capabilities

CNC Milling (3, 4, and 5-axis)

Complex geometries in a single setup for engine, transmission components, and line fixtures. Optimizes precision and reduces setup time.

CNC Turning

Shafts, bushings, and turned parts with critical concentricity and mirror finishes. Multi-task centers with live tooling for serial production.

EDM (Electrical Discharge Machining)

Fine cavities, internal keyways, and geometries impossible to mill on hardened tool-grade steels. Ultra-precise tolerances guaranteed.

Injection Molding

Presses from 50 to 1,100 tons with T0 to T2 mold validation. Automotive engineering polymers and compounds reinforced with glass or carbon fiber.

Sheet Metal

Laser cutting, punching, CNC bending, and MIG/TIG/robotic welding for body-in-white prototypes, structural brackets, and automotive supports.

Metrology & Surface Finishes

CMM verification on every lot with GD&T dimensional report. Finishes from Ra 0.8 — anodizing, phosphating, electroless nickel, and passivation.

MATERIALS

Automotive-Qualified Materials

Steel 1018 / 1045

High machinability, medium hardness, structural strength.

Applications: Shafts, pins, suspension brackets.

Steel 4140 / 4340

High fatigue and impact resistance after quenching and tempering.

Applications: Crankshafts, gears, connecting rods.

Stainless 304 / 316

Corrosion resistance, good weldability, high ductility.

Applications: Fuel lines, exhausts, sensor housings.

Aluminum 6061 / 7075

Lightweight, high strength-to-weight ratio, excellent machinability.

Applications: Housings, blocks, structural mounts.

PA / PP / ABS

Chemical resistance, low cost, high moldability.

Applications: Interiors, clips, covers, ducting.

PEEK

Thermal and chemical resistance, low friction coefficient.

Applications: Bushings, seals, under-hood parts.

QUALITY PROCESSES

Automotive Quality Processes

PPAP — Production Part Approval Process

We deliver full PPAP levels 1 through 5: control plan, FMEA, dimensional report, process capability, MSA, PSW, and signed initial samples. Format adapted to the customer.

APQP — Advanced Product Quality Planning

We accompany all 5 APQP phases: planning, product design, process design, validation, and launch. An account engineer coordinates deliverables with your quality team.

SPC — Statistical Process Control

X̄-R and p control charts per critical characteristic. Target Cpk ≥ 1.33 on dimensions with FMEA severity ≥ 7. Periodic reports to the customer during serial production.

MSA — Measurement Systems Analysis

Gage R&R studies on masters and instruments before first lot. Calibration traceability with valid ILAC / EMA certificates on every measurement device.

FAI — First Article Inspection

100% inspection of the first part with dimensional report, GD&T, and ballooned drawing. Digital sign-off from partner and Radii before releasing the lot to production.

Full Lot Traceability

Lot number, heat, operator, and shift recorded per part. Full audit trail available for the entire life of the automotive program.

APPLICATIONS

Automotive Applications

Engine & Transmission Components

Housings, covers, flanges, bushings, and turbo casings in aluminum and heat-treated steels. Critical positional tolerances verified with CMM.

Suspension & Chassis Parts

Mounts, tie rods, control arms, and studs in 4140/4340 steel with tempering, anti-corrosion finishes, and destructive testing for validation.

Tooling & Line Fixtures

Gages, jigs, poka-yoke, and line check fixtures. Rapid build with DFM optimized for direct shop-floor validation.

Functional Prototypes

From a single piece in production material, ready for test bench. Process identical to serial production to avoid surprises during final validation.

Replacement & Line-Down Parts

Urgent parts with expedited flow, quoting in minutes, and prioritized production to prevent costly line stoppages at your plant.

E-Mobility (EV)

Battery pack housings, cold plates, high-current connectors, and thermally-toleranced module structures. Material and finish per OEM specification.

COMPARISON

Radii vs. Traditional Shop

Quoting in minutes, not days

Upload your CAD and receive price and lead time automatically. Traditional shops take 3 to 5 days to return quotes via email.

Automatic comparison across partners

Radii compares your part across multiple certified shops and picks the one that best fits price, lead time, and certifications. No one-by-one re-quoting.

FeasibilityAI flags risk before production

Automatic manufacturability analysis on your CAD: detects problematic geometries, impossible tolerances, and incompatible finishes before cutting any material.

One contact, multiple capabilities

CNC, EDM, injection molding, and sheet metal with a single account engineer. Avoid managing five different suppliers per automotive program.

Dimensional reports included

CMM verification and GD&T dimensional report included with every order. Traditional shops charge separately and usually offer it as optional.

Scalable prototype to production

Same flow from 1 piece to serial production. No re-quoting every time volume increases and no switching suppliers when moving to serial.

FAQ

Frequently Asked Questions

Is Radii IATF 16949 certified?

Automotive machining delivered through Radii is executed by manufacturing partners with active IATF 16949 certification. This guarantees documented processes, statistical process control (SPC), full lot traceability, and the ability to deliver Tier 1 and Tier 2 parts to OEMs.

What tolerances do you hold for automotive parts?

Tolerances from ±0.005 mm on 5-axis CNC milling and turning, with CMM (coordinate measuring machine) dimensional verification on every lot. Surface finishes from Ra 0.8. Tighter tolerances are evaluated case by case during quoting.

Can you deliver full PPAP (levels 1 through 5)?

Yes. We deliver PPAP up to level 5 including control plan, FMEA, full dimensional, capability studies (Cpk ≥ 1.33), MSA, PSW, and initial samples. The package adapts to the customer requirement and characteristic severity.

What is the minimum order volume?

From a single piece for prototypes and validation, up to serial production. No hard minimums — we quote prototype, pre-series, and production in the same flow so you can validate geometry before committing to tooling.

How long does it take to get a quote for an automotive part?

Minutes. Upload your CAD file (STEP, IGES, X_T) and receive price, lead time, and automatic DFM analysis. Parts requiring manual review for critical geometry are quoted by an engineer within 24 hours.

Which materials do you offer for automotive applications?

Steels 1018, 1045, 4140, and 4340; stainless 304 and 316; aluminums 6061 and 7075; engineering plastics PA, PP, ABS, and PEEK; plus heat-treated tool steels. Every partner documents material certificate and heat treatment for traceability.

Do you support APQP and control plans during development?

Yes. We support the five APQP phases — planning, product design, process design, validation, and launch — with control plan, FMEA, and run-at-rate. An account engineer coordinates documentation with your quality team.

GET STARTED

Upload your CAD file and get an instant quote

Price, lead time, and automatic DFM analysis for your automotive part — in minutes, not days.

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