Cast aluminum heat sink RFQ guide for thermal targets, fins, A356, machining, and inspection records
Quote path for cast aluminum heat sinks and thermal-management housings covering heat source, fin geometry, A356 route, machining datums, surface finish, and inspection records.
This route is built for LED lighting, power electronics, telecom, industrial control, EV thermal module, and enclosure buyers who need to turn a heat-sink concept or drawing into a manufacturing RFQ without losing the thermal assumptions that drive process choice.
What procurement wants clarified
Commercial checkpoints before the buyer sends the RFQ
RFQ action
Use this page as the last stop before contact
The goal is to replace vague contact intent with a quote that includes drawing/spec, material, quantity or MOQ, tooling, lead time, testing, and reply path.
Open RFQ form →Buyer checklist
What to include so the quote is real
• 2D PDF plus STEP model, or NDA-first note if thermal layout or customer geometry is confidential
• Application scope: LED fixture, power electronics housing, telecom module, inverter, controller, EV thermal module, industrial power supply, or custom heat sink
• Thermal inputs: heat source, wattage or thermal target, contact area, airflow assumption, ambient condition, mounting orientation, and any CFD or test expectation
• Geometry inputs: fin height, fin thickness, base thickness, bosses, inserts, curved or radial fins, machining stock, datum plan, and minimum wall or draft requirements
• Material and finish target: A356-T6, ZL114, ADC12, anodizing, coating, powder coat, or supplier recommendation required
• Inspection and approval needs: CMM, fin-fill review, flatness, threaded insert checks, material record, heat-treatment record, surface finish record, FAI, PPAP-style documents, or traceability
Commercial comparison
Questions that separate a serious quote from a placeholder quote
| Thermal target | State heat source, wattage or thermal target, contact area, airflow, orientation, and ambient condition so the quote does not treat the part as a generic aluminum cover. |
|---|---|
| Geometry and fins | Mark fin thickness, fin height, base thickness, curved or radial features, bosses, inserts, machining stock, datum scheme, and areas where fill or distortion risk matters. |
| Process route | Gravity casting should be reviewed against A356 or ZL114 needs, section thickness, 3D fin geometry, integrated mounting features, prototype quantity, annual volume, and tooling economics. |
| Inspection records | Ask for CMM, flatness, fin-fill review, material certificate, heat-treatment record, surface finish check, FAI, PPAP-style documents, and traceability when required. |
| Commercial risk | Thermal-management projects often carry tooling, sample validation, machining fixture, coating, export packaging, and launch timing risk; the RFQ should separate these from raw casting price. |
Evidence next steps
Review product proof before the RFQ form
These links are mapped in schema as product evidence, product-example RFQ guides, buyer resources, quote intent, or landing pages so crawlers can connect this quote route to the right proof before the buyer submits drawings.
Buyer guide
Cast aluminum heat sink process guide
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Landing page
Gravity casting process evidence
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Landing page
A356 material route
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Buyer resource
Gravity casting DFM guide
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Buyer resource
Casting drawing requirements
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Buyer resource
Casting process selection guide
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Landing page
Quality control and inspection evidence
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Quote intent
Adjacent thermal-system impeller quote route
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Quote intent
Adjacent EV motor housing thermal route
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →Buyer resource
Quote readiness checklist
Review the matching landing page, then return here or continue into the RFQ form with clearer commercial assumptions.
Open landing →FAQ
Questions buyers usually ask on quote-intent pages
What should buyers send for a cast aluminum heat sink quote?
Send drawings, STEP model, heat source, wattage or thermal target, contact area, airflow assumption, ambient condition, fin geometry, alloy or process target, machining scope, finish requirements, annual volume, tooling status, and inspection needs.
When is gravity casting relevant for heat sinks?
Gravity casting is worth reviewing when the heat sink needs 3D fins, integrated bosses, thicker sections, curved airflow features, cast-in mounting geometry, or a heat-treatable aluminum route that cannot be handled well by simple extrusion.
Can Bohua recommend the process if the design is not final?
Yes. Buyers can mark the material and process as open, then send the application, geometry, annual volume, and thermal target so Bohua can review whether gravity casting, low-pressure casting, extrusion, CNC machining, or another route is the better fit.
Which inspection records matter for thermal-management castings?
Common records include CMM report, flatness check, fin-fill review, material certificate, heat-treatment record, surface finish record, sample inspection, FAI, PPAP-style documentation, and traceability when required.
How should buyers compare heat sink casting suppliers?
Compare thermal assumptions, process route, tooling plan, fin-fill risk, machining datum plan, coating or surface finish, inspection records, sample validation, packaging, and response speed rather than only comparing raw casting price.
Ready to turn comparison traffic into a real RFQ?
Send the drawing package, commercial assumptions, and contact path through the RFQ form so the quote can move faster from evaluation to action.
Send RFQ / contact engineering