Buyer note: confirm assumptions before quoting
Lead time, MOQ, yield, leak-test scope, machining scope, and landed cost depend on the drawing, alloy, inspection plan, annual volume, and destination market. For current supplier facts, review the supplier capability sheet or send an RFQ package.
# Material Certificate and Traceability for Aluminum Castings: RFQ Checklist for Alloy Records, Heat Treatment, Lot Control, and Approval Evidence
Material certificates and traceability sound like paperwork, but they can decide whether an aluminum casting supplier is usable for OEM production. If the RFQ says only "material certificate required," suppliers may quote very different record scopes: alloy chemistry only, heat-treatment record, melt lot, casting lot, machining batch, shipment lot, or buyer-specific traceability fields.
This checklist helps overseas buyers define what traceability means before comparing quotes.
Useful Bohua routes:
- •Quality Documentation RFQ
- •Certifications
- •Quality Control
- •Supplier capability sheet
- •Structured RFQ upload
1) Define which material record you need
Buyers should state whether the RFQ requires:
- •alloy chemistry confirmation
- •raw-material or ingot supplier record
- •melt or batch spectrometer record
- •material certificate for each lot
- •heat-treatment record if T5, T6, or another temper is required
- •hardness, tensile, elongation, or microstructure evidence when specified by drawing or buyer approval plan
If the drawing only says A356 or ADC12, that is not enough to define the record package. The quote should say what evidence is included and what evidence needs buyer-specific review.
2) Connect traceability to the part number and shipment
Traceability should answer a practical question: if a defect, audit question, or buyer approval issue appears, which lot of parts, material, heat treatment, machining, and shipment is affected?
Ask the supplier to define:
- •part number and drawing revision control
- •casting batch or heat lot identification
- •machining batch or fixture lot when applicable
- •heat-treatment batch when applicable
- •inspection record ID and sample quantity
- •packing list, carton, pallet, or shipment lot relationship
- •retention period for records
For automotive-style programs, the buyer may require a more formal traceability format. Put that format into the RFQ before pricing.
3) Separate certification from part-specific evidence
A quality-system certificate is not the same thing as a material record for a specific part. A useful RFQ separates:
- •company or site certification evidence, such as IATF 16949:2016 scope where relevant
- •project-specific material certificate
- •heat-treatment record for the actual lot
- •CMM or inspection records for the actual sample or batch
- •PPAP, FAI, or customer-specific forms when required
RFQ CTA
Have a casting project? Upload your drawing for a fast, structured quote review.
Send the drawing, target alloy, finishing scope, MOQ, and delivery timing. Bohua will review it like a real sourcing project, not a generic contact request.
Do not treat ISO 14001 application status as certification. If an environmental certificate is required by the buyer program, request the current certificate and scope as a separate approval item.
4) Match traceability depth to risk
Not every casting needs the same record package. Define traceability depth by risk:
| Program situation | Traceability scope to consider |
|---|---|
| Prototype or design validation | Drawing revision, sample ID, alloy record, inspection record |
| Pressure-sensitive pump or valve housing | Alloy lot, leak-test record, machined feature record, inspection sample link |
| A356-T6 structural or housing part | Alloy record, heat-treatment batch, CMM or FAI record, sample identity |
| Automotive-style supplier approval | Certificate scope, PPAP or FAI scope, traceability format, record retention |
| Second-source or transfer-tool review | Current supplier record baseline, new supplier sample records, comparison criteria |
This keeps the RFQ practical. Asking for everything can slow quotation; asking for too little can create approval failure after samples arrive.
5) Ask what is included, optional, and buyer-supplied
Before comparing supplier prices, ask each supplier to mark:
- •included in base quote
- •optional add-on
- •requires buyer form or customer-specific requirement
- •not available
- •available through third-party testing only
This matters because a low unit price may exclude the record package your quality team needs.
Copy-paste RFQ starter
> Material certificate and traceability RFQ (copy-paste)
> Files: 2D PDF rev __ ; STEP rev __
> Alloy and standard: A356 / ZL114 / ADC12 / buyer-defined __
> Temper or heat treatment: as-cast / T5 / T6 / other __
> Material record required: alloy chemistry __ ; spectrometer record __ ; material certificate per lot __
> Heat-treatment record required: yes/no __ ; batch ID format __
> Traceability fields: part number __ ; drawing revision __ ; casting lot __ ; machining batch __ ; inspection record ID __ ; shipment lot __
> Inspection links: CMM __ ; leak test __ ; hardness/mechanical test __ ; FAI/PPAP if required __
> Record retention or buyer form: __
> Quantity, destination, Incoterm: __
Submit a quality-documentation RFQ
Use this route when supplier approval is blocked by material evidence, record format, heat-treatment traceability, or customer-specific documentation.
Project CTA
Need Quality Documentation With Your RFQ?
Send your drawing for a structured DFM review, quote scope, and project-specific timing discussion.