In Plain Language

Automotive uses: engine blocks, wheels, suspension, heat exchangers.

6061, 6063 for extrusion; AlSi for casting; 5xxx for body panels.

Tight tolerances: ±0.5mm common; corrosion resistance critical.

Quality: IATF 16949, ISO/TS 16949 certification required.

Local PH suppliers support growing regional auto industry.

The Philippines is becoming a regional hub for automotive aluminum manufacturing. This guide covers materials, standards, and how to source quality parts locally.

Common Automotive Aluminum Parts

Engine blocks and cylinder heads – cast aluminum (AlSi, A356)
Wheels – gravity or low-pressure die-casting
Radiators and heat exchangers – brazed or welded assemblies
Suspension components – forged or extruded 6061/6063
Body panels and trim – sheet metal stamping or extrusion

Key Alloys and Tempers

Different parts demand different alloys based on temperature, strength, and corrosion exposure.

AlSi7Mg, AlSi9Mg – casting for engine components
6061-T6 – extrusion for suspension arms and brackets
5083-H321, 5182-H19 – body panels in harsh marine climates

Precision and Tolerances

Automotive parts require tight control.

Typical tolerance: ±0.5 mm on casting, ±0.2 mm on machined
Surface finish: Class 1 or better for appearance-critical parts
Traceability: batch MTRs, chemical composition, mechanical test reports

Quality Certifications

IATF 16949 / ISO/TS 16949 – must-have for automotive suppliers
ISO 14001 – environmental management
Regular audits by OEM quality teams

Corrosion and Testing

Salt spray testing (ASTM B117) is common for body and chassis parts in tropical markets. Confirm testing and coating specs with your OEM.

Local Sourcing Benefits

Shorter lead times vs overseas suppliers
Support for Philippines manufacturing clusters
Local quality and logistics expertise

Contact OneSky or our network of suppliers to discuss your automotive aluminum needs.

Automotive Aluminum Components: Manufacturing and Sourcing in the Philippines