Zinc Alloy Die Casting Parts

Zinc alloy parts at Runpeng follow the same production logic as the aluminum range, because they share its infrastructure: the mould division designs the tool, the casting division runs it, machining and finishing complete the part, and inspection releases it. The difference is only the alloy family and the part profiles it suits — smaller, detail-dense components where zinc's casting behaviour earns its place.

For buyers, the shared infrastructure matters more than the alloy trivia. It means one drawing review covers both metals: if a part family contains a larger housing and a small intricate mechanism, the housing can run in ADC12 aluminum and the mechanism in zinc, sampled together, finished to match, and shipped as one set.

Mark the drawing with the zinc alloy intent — or simply note the part's job and let the review recommend between zinc and aluminum. Include the finish early: zinc parts are frequently specified with decorative coatings, and the casting and handling route is set up differently for a part that will be coated than for one that ships as-cast. Critical dimensions should be flagged as such; they drive where machining stock is left and what the inspection plan measures on the CMM.

As with the zinc capability page, this page claims no catalogue: every zinc part is a custom part, evidenced by the factory's stated zinc die-casting capability rather than by named zinc products in the published range. The sample is the evidence — and sampling is exactly what the trial-production policy exists for.

Assemblies rarely respect alloy boundaries. A lock mechanism may combine a zinc cast body, a stainless steel CNC-machined part — the machining range includes stainless lock parts by name — and a stamped cover. Sourcing those three from three factories multiplies freight, finish-matching problems and finger-pointing. Sourcing them here multiplies none of those: one DFM review, one finish specification, one inspection standard, one shipment.

Zinc programmes run on the same skeleton as the aluminum range: die design and build in the in-house mould division, casting in the die casting division, then machining, finishing and CMM-checked release. Two habits keep programmes healthy. First, freeze the cosmetic-face and critical-dimension lists at sampling — they drive handling and inspection for the life of the part. Second, decide the zinc-versus-aluminum question on evidence: where a part family straddles both metals, sampling the borderline component in the recommended alloy settles arguments that brochures cannot.

Buyers transferring an existing part should say so at enquiry. A part with existing tooling, a part needing new tooling, and a part being re-specified from a sample are three different projects with three different first steps, and the review will name which one you have before quoting anything.