Catalytic Converters
Every other metal on this site is worth roughly the same per kilogram no matter whose it was. A catalytic converter isn't priced that way at all, its value depends almost entirely on which specific vehicle it came out of. Here's why that is, what actually makes one worth more than another, and how to sell a legitimate unit properly.
A catalytic converter is a stainless steel canister housing a ceramic or metallic honeycomb core, and that core is coated in a thin layer of platinum, palladium, and rhodium, the platinum group metals that trigger the chemical reactions converting harmful exhaust gases into less harmful ones. The steel canister itself is worth comparatively little, the real value sits in that precious-metal coating, which is exactly why converters get treated as their own commercial category instead of being priced as generic steel or stainless scrap. It's also a genuinely different market from gold and silver scrap: platinum, palladium, and rhodium are platinum group metals with their own separate pricing logic, covered in our precious metal scrap guide if what you actually have is jewellery, dental gold, or bullion instead.
Diesel particulate filters, DPFs, are a related but distinct unit fitted to diesel vehicles. They filter soot rather than converting gases the way a catalytic converter does, but they also carry platinum group metal coating and hold real scrap value for the same underlying reason. Worth identifying and listing separately rather than assuming it's just another converter.
The amount of platinum, palladium, and rhodium loaded into a converter varies enormously by manufacturer, model, and model year, driven by different emissions standards, engine designs, and cost decisions made when the vehicle was built. Two converters that look near-identical and weigh the same can genuinely differ in value by several times over, which is exactly why buyers look up value against the part number or vehicle details rather than weighing the unit and applying a rate.
Hybrid vehicles are a well-known example of this variation in practice. A hybrid engine runs cooler and cycles on and off more often than a conventional one, so it needs a heavier precious-metal loading, palladium in particular, to keep converting efficiently across those conditions. That's the real, documented reason hybrid models, the Toyota Prius most famously, are widely reported as carrying above-average converter value, and why they've unfortunately become a disproportionate theft target as a result.
To be direct about it: catalytic converters aren't one of ScrapTrade's live-priced calculator materials, per-unit, model-dependent pricing doesn't fit a per-kilogram calculator the way steel or copper does. What you can do is list it on the general marketplace with clear photos, the part number if you have it, and the vehicle make, model, and year, then set your own price, negotiate directly with an interested buyer, or post it to the Wanted Board and let a buyer who specialises in this material come to you. For the broader market context behind why these particular metals carry such value, see our piece on critical minerals and urban mining.
Because they're small, easily removed, and carry real value, catalytic converters are a genuine theft target right now, and that shapes how buyers approach a listing. Being ready to explain where yours came from, a vehicle you're scrapping, a repair job, an auto-wrecking operation, alongside GPS-video verification on the listing itself, is exactly the kind of documentation that lets a legitimate seller stand apart from a stolen-unit reseller. Our full piece on scrap metal theft and verification covers why this specific material is under such scrutiny right now and what the platform does about it in more depth.
Converters follow vehicle servicing and end-of-life processing rather than any one regional industry, so supply tracks population and vehicle numbers fairly closely. Perth and Western Australia's large geographic spread mean more vehicle-kilometres travelled and a steady flow of exhaust and emissions work through the state's repair and servicing industry. Wollongong's dense industrial base includes real automotive servicing and repair activity alongside its better-known heavy industry. Auto wreckers specifically are one of the most consistent legitimate sources, worth reading our guide for auto wreckers if that's your business.
Neither city is a requirement. Mechanics, exhaust specialists, and anyone scrapping a vehicle generate this material anywhere in Australia, and ScrapTrade connects buyers and sellers nationally regardless of where a listing is posted from.
Platinum, palladium, and rhodium are genuinely scarce, mined in only a handful of countries worldwide, and primary mining is slow, expensive, and carries a heavy environmental footprint compared with recovering the same metal from a converter that's already been made. That scarcity is exactly why recycled supply matters as much as it does to manufacturers and refiners, and why a legitimately sold converter feeds back into a real, valuable supply chain rather than being an afterthought category of vehicle scrap.
Because per-unit value isn't obvious to most sellers, a converter is genuinely easy to underprice against a single buyer's quick, cautious estimate. On ScrapTrade, you describe your unit properly, part number and vehicle details included, then negotiate directly with an interested buyer or post it to the Wanted Board so a buyer who actually specialises in this material can make you a real offer, negotiation is on by default on every listing. 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. The full case for why that beats a single yard quote is on Why Choose ScrapTrade and Trust & Safety.
Because the value isn't really about weight, it's about which specific converter you have. The platinum, palladium, and rhodium loading varies enormously between makes, models, and even model years, so two converters of similar size and weight can be worth very different amounts. Value is looked up per unit, usually from the part number or vehicle details, not calculated from a per-kilogram rate.
Hybrid engines run cooler and cycle on and off more than a conventional engine, which means the converter needs a higher precious-metal loading, palladium in particular, to keep working efficiently across those conditions. That's the real reason hybrid models, the Toyota Prius especially, are widely reported as carrying above-average converter value.
Related but not identical. A DPF captures soot particles from diesel exhaust rather than converting gases the way a catalytic converter does, but it also carries platinum group metal coating and has real scrap value for the same underlying reason. Worth listing separately and accurately rather than lumping it in as a generic converter.
Usually not. Aftermarket units are generally built to meet emissions standards at lower cost, which typically means less precious-metal loading than the original manufacturer's part. Noting whether a unit is OEM or aftermarket, if you know, helps a buyer assess it accurately.
The same way any high-value, theft-prone material gets verified on ScrapTrade: GPS-video verification on the listing itself, plus being ready to explain where it came from, a vehicle you're scrapping, a repair job, an auto-wrecking operation. See our piece on scrap metal theft and verification for the fuller picture of why that matters right now specifically for this material.
On the general marketplace, with clear photos, the part number if you have it, and the vehicle make, model, and year it came from. Buyers who specialise in this material can assess it from that information, and you can negotiate directly or post it to the Wanted Board rather than relying on a generic weight-based estimate.
Describe it properly, negotiate directly, or post it to the Wanted Board.
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