Zinc Scrap
If you've pulled zinc die-cast parts out of an engine bay, a demolition job, or a box of old hardware (carburettor housings, door handles, toy models, bracket castings), there's a good chance whoever quoted you last lumped it in with generic "pot metal" and priced it accordingly. Zinc is a real, distinct metal with its own market, not a leftover category. Here's what it actually is, what it's worth, and how to sell it properly.
Zinc is a bluish-white, corrosion-resistant metal, and in Australia it shows up in scrap piles in two very different forms. The first is zinc die-cast, a zinc alloy (often called Zamak) that's melted and injection-moulded into shapes: automotive brackets, door and window hardware, small engine parts, plumbing fittings, old toys and model cars. It's the form most sellers actually have. The second is rolled or sheet zinc, used for roofing, flashing, and guttering on older buildings, less common today now that colorbond steel dominates new construction, but still turning up in renovations and demolitions.
Telling zinc die-cast apart from aluminium matters, because the two get mixed up constantly and zinc is usually worth more per kilogram. Zinc die-cast is noticeably heavier than aluminium for the same size piece, doesn't throw sparks when ground the way steel does, and has a duller, greyer finish than aluminium's brighter sheen. If a part feels heavier than you'd expect and doesn't rust, there's a decent chance it's zinc, not aluminium.
One common mix-up worth clearing up directly: galvanized steel is not zinc scrap. It's steel with a thin protective zinc coating, and the actual zinc content by weight is small, so galvanized material is priced and sold as steel, typically light iron or HMS grade depending on thickness, not under a zinc category. If you're not sure which one you're holding, that distinction alone can change what a fair price looks like.
To be precise about it: ScrapTrade's live-priced Zinc category covers new production zinc die-cast specifically, the clean, identifiable die-cast alloy scrap described above. If what you've got is rolled zinc sheet, roofing offcuts, zinc dross or ash, or used sacrificial anodes, you can still list it on the marketplace and reach verified buyers, it just won't map to the exact calculator price, since that's benchmarked to die-cast material. Note the form clearly in your listing description and let buyers assess it, or post it to the Wanted Board and let interested buyers come to you with an offer.
Check today's zinc die-cast priceZinc has a real industrial backbone in Australia, not just as scrap but as an industry in its own right. Broken Hill, in far-west NSW, sits on one of the richest silver-lead-zinc orebodies ever found, discovered in 1883 and the reason BHP (originally the Broken Hill Proprietary Company) exists at all. On the other side of the country, Nyrstar's smelter at Lutana, just outside Hobart, has been refining zinc for over a century and is one of the larger zinc smelters in the world, producing standard zinc metal alongside die-cast alloys and galvanising-grade zinc, the same categories most scrap sellers are actually dealing with.
Two Australian cities carry a particularly strong connection to zinc specifically, driven by what the metal is actually used for. In Perth, Western Australia's offshore oil, gas, and mining sector relies heavily on sacrificial zinc anodes, blocks of zinc bolted to pipelines, platforms, and vessel hulls that corrode in place of the steel they're protecting, and get replaced on a routine schedule. That creates real, recurring anode scrap. In Adelaide, the naval shipbuilding and engineering base around Osborne uses zinc for the same corrosion-protection role on vessels, alongside die-cast components from the city's broader manufacturing sector. Neither city is a requirement to sell on ScrapTrade, buyers and sellers connect nationally, but it's genuine context if you're wondering why zinc turns up where it does. See our Marine and Boat Scrap guide for the rest of what's recoverable from a hull beyond the anodes.
Zinc is one of the more genuinely circular metals to recycle. It melts and re-forms without losing purity or performance, so recycled zinc isn't a lesser grade of the same metal, it's the same metal. Producing zinc from recycled scrap uses roughly 76% less energy than producing it from ore, a meaningful gap given how energy-intensive primary zinc smelting is. That matters beyond the environmental angle: it's a large part of why there's consistent buyer demand for well-sorted zinc scrap rather than it being treated as an afterthought, since it feeds directly back into galvanizing lines, die-casting operations, and alloy production without the energy cost of starting from ore.
Preparation is straightforward compared to some metals, but it still affects price. Separate zinc die-cast from aluminium, steel, and brass rather than binning everything together; a sorted die-cast lot gets a cleaner, more confident offer than a mixed pile a buyer has to sort themselves. Strip off any obviously attached non-metal parts, plastic housings, rubber seals, screws and fasteners where practical, since contamination reduces grade the same way it does for every other scrap metal. If you're dealing with sacrificial anodes, note the condition, since heavily corroded anodes are still valuable but a buyer will want to know how much usable zinc is actually left. Once it's sorted, weigh it, photograph it clearly, and list it.
Zinc die-cast is exactly the kind of material that gets undervalued at a walk-in yard, because it looks close enough to aluminium or generic pot metal that it's easy to price it that way rather than checking properly. On ScrapTrade, you check a live reference price before you commit to anything, then list at a fixed price, run it as a live auction so verified buyers compete for it, or negotiate directly, negotiation is on by default on every listing, not a special request. Every listing is GPS-video verified before it goes live, and payment sits in escrow from the moment a deal is confirmed until pickup or delivery is done, so neither side is exposed first. If you'd rather have help getting a listing set up properly, ScrapTrade's team will call and walk you through it rather than leaving you to figure out the form alone. The full case for why that beats a single yard quote is on Why Choose ScrapTrade and Trust & Safety.
Weight is the fastest test: zinc die-cast is noticeably heavier than aluminium for the same size piece. It also won't spark when ground, unlike steel, and tends to have a duller grey finish than aluminium's brighter sheen. If you're still not sure, list it with clear photos and a buyer can usually confirm from there.
The live-priced Zinc category on the calculator covers new production zinc die-cast specifically. Other zinc forms, like roofing sheet, dross, ash, or used anodes, can still be listed on the marketplace, they just won't match the die-cast reference price exactly, so describe the form clearly and let buyers assess it.
No. Galvanized steel is steel with a thin zinc coating, and the actual zinc content is too small to price it as zinc. It sells under the relevant steel grade, usually light iron or HMS, not the Zinc category.
Checking today's reference price before you accept anything is the first step. Beyond that, running a lot as a live auction lets multiple verified buyers compete for it rather than you relying on one person's assessment, and negotiation is available on every listing if you'd rather deal directly with one buyer.
No. Those cities have a genuinely strong connection to zinc through WA's offshore corrosion-protection industry and Adelaide's naval shipbuilding base, but ScrapTrade is a national marketplace. Verified buyers anywhere in Australia can see and bid on your listing regardless of where you're posting from.
Check a live price, then sell at a fixed price, run an auction, or negotiate directly.
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