Industries embed iridium, one of the rarest and most valuable metals on Earth, into equipment that eventually gets decommissioned, replaced, or scrapped. Recycling iridium from that equipment is one of the most overlooked opportunities in industrial scrap recovery.
For businesses in manufacturing, chemical processing, aerospace, and many other sectors, that equipment may be sitting idle on-site right now. But did you know that its iridium content can be incredibly valuable? Many people don’t know this, and we’re going to talk more about it today.
Recycling Iridium
This guide covers the most common categories of industrial equipment that contain iridium and what to do once that equipment reaches the end of its life.
We’ll also cover the importance of working with a professional scrap metal removal company to ensure you get the most value for your product.
Iridium in Industrial Equipment
Iridium belongs to the platinum group metals (PGMs), a family of six rare elements that share similar chemical properties:
- Extreme heat resistance
- Corrosion resistance
- Exceptional durability under pressure
These properties make iridium useful in applications where other metals would fail.
Industrial iridium typically appears in small quantities. That said, the metal’s price per troy ounce, which has historically exceeded those of gold and platinum, means even modest amounts carry real dollar value.
Spark Plugs and Ignition Components
Iridium spark plugs are standard in high-performance engines and increasingly common in industrial generators, marine engines, and heavy equipment.
The iridium is used for the fine-wire electrode tip. This allows for a smaller, more precise spark and a longer service life than copper or platinum alternatives.
Large industrial operations running fleets of diesel generators, forklifts, or off-road equipment accumulate marked quantities of spent iridium spark plugs over time. Collect and set these aside rather than discarding them with general waste.
Thermocouples
Thermocouples are temperature-sensing devices used in furnaces, kilns, reactors, and manufacturing lines.
Iridium-rhodium thermocouples are the standard choice for extremely high-temperature environments; they can measure temperatures above 2,000 degrees Celsius.
You’ll find them in glass manufacturing facilities, metal casting operations, ceramic production, and high-temperature research settings.
When these thermocouples reach the end of their service life, the iridium content remains intact and recoverable.
Crucibles
Some of the uses for laboratory and industrial crucibles made from iridium or iridium alloys include:
- Growing single crystals
- Processing reactive materials
- High-temperature synthesis
You’ll find them in semiconductor manufacturing, synthetic gemstone production, and advanced materials research.
Iridium crucibles are expensive to produce and expensive to replace. Once they’re too worn or contaminated for continued use, the raw metal value is substantial.
Electrodes in Chemical Processing
Iridium oxide coatings are used on dimensionally stable anodes (DSAs) in chlor-alkali plants, which produce chlorine and caustic soda. Uses for anodes include water treatment, electroplating, and electrolysis.
When the electrodes are replaced or the equipment is decommissioned, the iridium coating, along with any ruthenium or titanium in the assembly, has scrap value.
Electrical Contacts and Switches
Iridium and iridium alloys appear in electrical contacts for relays, switches, and circuit breakers used in demanding industrial environments.
The metal resists arcing, oxidation, and wear. This makes it suitable for contacts that operate frequently or under high load. Telecommunications equipment, power distribution systems, and industrial control panels may all contain iridium contacts.
Aerospace and Defense Components
Rocket engine components, including nozzle throats and combustion chambers, rely on iridium to withstand temperatures and pressures that would destroy most other materials.
Radiation shielding, gyroscope components, and certain navigation equipment also incorporate iridium.
Facilities that service, retire, or dismantle aerospace hardware regularly handle iridium-containing scrap, even when they don’t always identify it as such.
X-Ray and Radiation Equipment
Iridium-192 is a radioactive isotope used in industrial radiography for inspecting welds, pipelines, and structural components. Brachytherapy, a cancer treatment that places radiation sources near or inside tumors, also uses it.
Iridium-192 sources are tightly regulated and must be handled through licensed channels. This category of iridium is subject to radiation safety legislation and requires a completely separate process from standard scrap recovery.
Glass Manufacturing Equipment
The glass industry uses iridium in bushings and stirrers for fiber optic glass production. Iridium’s resistance to molten glass makes it one of the few materials that can withstand the process without contaminating the product.
When glass manufacturing equipment is replaced or facilities are upgraded, the iridium components retain notable value.
Why You Might Overlook Scrap Iridium
Most businesses lack a way to identify iridium on-site. Often, the metal appears as a small component within a larger assembly, coated on a substrate. Otherwise, it’s alloyed with other platinum group metals like rhodium or ruthenium.
Without knowing what to look for, it’s easy to treat a valuable piece of equipment as ordinary scrap metal.
This results in iridium ending up in general metal recycling streams, where it’s either lost entirely or recovered at rates that don’t reflect its actual market value.
Iridium prices are volatile and have seen notable spikes as demand from the hydrogen energy sector, electronics manufacturing, and the chemical industry has grown.
What to Do With Iridium-Containing Industrial Equipment
The first step is separation and identification.
Equipment known to contain iridium, or suspected to contain platinum group metals, should be stored separately from general scrap. Mixing PGM-bearing material with iron, steel, or aluminum scrap makes recovery harder and reduces the return.
Document what you have.
Do you know the manufacturer, model number, and application of the equipment? That information helps a specialist scrap company or metal refiner assess the probable PGM content before committing to a price.
Work with a scrap company (like Scrap Gators) that has access to PGM refining. Not all scrap metal dealers have relationships with refiners who process iridium.
A reputable scrap company will either handle PGMs directly or work with a certified refinery that does. The recovery process typically involves assaying the material to determine the actual iridium content. This amount is then used to calculate your payment.
For large quantities or high-value material, it’s worth getting multiple assessments. Iridium content in industrial scrap varies widely depending on the application and the equipment’s age, and a proper assay protects both parties.
For iridium-192 radiation sources, contact a licensed radiation safety company or your regional nuclear regulator. This material requires certified disposal and cannot be handled through standard scrap channels.
Bonus: Tips for Recycling Iridium
Below, we’ve compiled some quick tips for recycling iridium if you want to start right away.
Separate PGM-Bearing Equipment from the Start
Keep iridium-containing components separate from the moment they come out of service. Once they get mixed into a general scrap pile with iron, steel, or aluminum, recovery becomes harder, and the return drops.
Set up a dedicated storage area for spent spark plugs, thermocouples, electrodes, and other suspect components. It costs nothing and protects the value from day one.
Label What You Pull
Record the equipment manufacturer, model, and the component’s use as soon as you remove it.
A chlor-alkali anode and an iridium crucible look similar to an untrained eye. However, they carry different compositions and different values. Good recordkeeping gives a refiner something to work with before any assay takes place.
Leave Components in the Condition They Came Out
Don’t clean or modify components before professionals assess them. Abrasive cleaning, sandblasting, or attempts to remove coatings can strip iridium from the substrate, reducing recoverable content.
Get an Assay Before Agreeing to a Price
Request an assay before accepting any offer, especially for larger quantities. Iridium content varies depending on the application, the manufacturer, and the age of the equipment.
An assay determines the actual composition and protects you from accepting a flat-rate offer based solely on weight.
Handle Iridium-192 Separately
Treat iridium-192 radiation sources as a completely separate category. They require licensed handling and certified disposal.
Contact a licensed radiation safety company or your regional nuclear regulator before anything else. No standard scrap channel can legally accept them.
Iridium Scrap Metal Removal in Florida
Is your facility decommissioning equipment or clearing out surplus industrial hardware? Then it pays to take a closer look before anything goes to a general scrap bin.
Spark plugs, thermocouples, electrodes, crucibles, and specialized components from glass, aerospace, or chemical processing all warrant a second look.
Scrap Gators, a Fort Pierce scrap metal removal company experienced in industrial materials, will help you identify what you have, arrange removal, and connect you with the appropriate recovery process for PGM-bearing scrap.
The value in iridium doesn’t disappear when equipment reaches the end of life—it just needs to be directed to the right place. Call us, and we’ll help!
