# PPAP Level 3 for Aluminum Castings: What Automotive Buyers Actually Check
PPAP Level 3 for aluminum castings gives buyers evidence that the supplier understands the drawing, process route, material requirements, inspection plan, and production controls before serial supply begins.
Core evidence areas
For a cast aluminum part, buyers usually focus on:
RFQ CTA
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- •design record and drawing revision
- •process flow from raw material to shipment
- •PFMEA and control plan
- •material certificate and heat-treatment evidence
- •dimensional results and CMM datum strategy
- •capability evidence for critical characteristics when required
- •sample parts and master sample handling
- •checking aids, gauges, and inspection fixtures
- •Part Submission Warrant and buyer-specific requirements
Casting-specific questions
Ask how the supplier controls alloy chemistry, melt practice, tooling wear, cores, machining stock, porosity risk, heat treatment, and inspection records. A PPAP package should reflect the casting process, not a generic machined-part template.
Bohua RFQ path
Bohua can provide PPAP documentation up to Level 5 according to project requirements, including agreed submission scope, sample approval, CMM reports, material traceability, and process-control evidence. Send the package through the formal RFQ form.
Project CTA
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