Die casting in China — aluminium, zinc and magnesium, engineered end to end
From die design and casting simulation to machined, finished and inspected castings: P&A International manages high-pressure die casting projects through vetted partner foundries in China — every supplier ISO 9000 certified or better — with one dedicated engineer accountable from tooling to delivery.
Castings are unforgiving: porosity, draft and datum decisions made at the die stage decide whether your machined faces seal and your anodised surfaces pass. Our engineers fight those battles before the die is cut.
consultancy + manufacture
per project, end-to-end
qualified samples with test data
every supplier certified or better
one supplier, one quality file
Die casting services
HPDC casting
Aluminium (ADC12, A380, A356), zinc (Zamak 3/5) and magnesium (AZ91D) on 160 t – 3,000 t machines.
Die design & build
Flow and thermal simulation, H13 die steel, vacuum and squeeze options for porosity-critical parts.
CNC machining
Datum-driven machining of sealing faces, bores and threads — castings arrive assembly-ready.
Finishing & assembly
Shot blast, vibratory finish, chromate, powder coat, anodise (A356), plus sub-assembly and testing.
Porosity-critical or pressure-tight parts are quoted with the casting process options (vacuum, squeeze) and leak-test plan stated up front.
Engineering capability
- Alloys: ADC12/A380 and A356 aluminium, Zamak 3/5 zinc, AZ91D magnesium
- Machine range 160 t to 3,000 t locking force across partner foundries
- Die design with flow/thermal simulation; H13 dies, vacuum and squeeze casting options
- CNC machining of castings with datum strategy agreed at die design stage
- Impregnation and leak testing for pressure-tight castings
- Finishes: shot blast, vibratory, chromate conversion, powder coat, e-coat, anodise (A356)
- X-ray and CT porosity inspection on critical castings
- FAI with CMM report, material certs and casting process parameters documented
At a glance
| Alloys | Al: ADC12, A380, A356 · Zn: Zamak 3/5 · Mg: AZ91D |
| Machines | 160 t – 3,000 t HPDC |
| Part weight | A few grams to ~15 kg (aluminium) |
| Tooling lead time | Typically 6-10 weeks to first castings |
| Tolerances | To NADCA standard; tighter on machined features |
| Volumes | 5k to millions of parts per year |
| Quality | FAI + CMM, X-ray on request, leak test plans |
Why engineers & buyers choose PA
For design engineers
Your dedicated engineer reviews draft, wall uniformity, gate and overflow positions, and agrees the machining datum scheme before die steel is ordered — because a casting that cannot be located cannot be machined. Simulation results and trial reports come to you, not just to the foundry.
For purchasing
One supplier for casting, machining, finishing and assembly means one accountable quality file: FAI with CMM data, material certificates, process parameters and leak-test results. Tooling is yours, pricing is itemised, and every partner foundry is ISO 9000 certified or better.
3 easy steps to get started
Send casting data
STEP file, alloy, annual volume and the surfaces that matter (sealing, cosmetic, machined).
Casting engineering review
Die concept, process options, machining datums and itemised tooling + part pricing.
Sample castings to production
First castings with FAI/CMM and X-ray where specified, then volume supply.
Applications
Typical castings include motor and gearbox housings, heat sinks and LED housings, pump and valve bodies, brackets and structural automotive parts, telecom enclosures and power-tool components — supplied machined, finished and ready for your line.
Aluminium-specific programs are detailed on our aluminum die casting company page. Related: CNC machining, aluminium extrusion and injection molding.
Die casting or another route?
Quick orientation by geometry and volume:
| HPDC die casting | Complex thin-wall metal parts at 5k+ per year — best cost at volume |
| Gravity / low pressure | Thicker sections, lower volumes, heat-treatable A356 parts |
| CNC from solid | Low volumes or tolerances castings cannot hold — see CNC machining |
| Extrusion + machining | Constant cross-sections like heat sinks — see aluminium extrusion |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed casting plan and price:
- STEP/IGES model and 2D drawing with critical dimensions
- Alloy preference (or the operating environment so we can propose)
- Annual volume — it drives die cavitation and machine size
- Sealing/pressure-tightness and cosmetic requirements
- Machined features and their tolerances
For pressure-tight parts, mention test pressure and medium — the leak-test plan goes into the quote.
Get a quote
Describe your casting and one dedicated engineer will reply with process options, a die concept and itemised tooling + part pricing.
One dedicated engineer reviews every enquiry and replies with a proposed casting plan and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au