Cadmium

Key Takeaways

1. 1Cadmium is a soft, silvery metal (atomic number 48) that is highly toxic even at low concentrations — chronic inhalation damages the kidneys irreversibly and accumulates in bones
2. 2It is not mined directly but extracted as a byproduct of zinc and copper ore refining, so its supply is tied to those metals' production cycles
3. 3Nickel-cadmium (Ni-Cd) batteries were the industry standard for decades, valued for robust electrochemistry and tolerance for overcharge and deep discharge cycles
4. 4The EU banned Ni-Cd batteries in consumer applications in 1998; lithium-ion and nickel-metal hydride cells now dominate, representing a major structural demand loss
5. 5Aerospace and defence electroplating remains the key remaining use — cadmium coatings provide exceptional corrosion resistance for aircraft and military components
6. 6Cadmium contamination persists in soil and groundwater for decades, and crops grown in industrial zones can absorb dangerous levels — a long-tail environmental liability
7. 7Futures trade on the LME but volumes are modest; prices are driven by industrial demand cycles and regulatory shifts rather than broad commodity investment flows
8. 8Recycling rates are rising as regulations tighten around battery waste and electroplating byproducts, adding a secondary supply stream
9. 9Cadmium is primarily a niche industrial material serving aerospace and military sectors — it is rarely traded as a standalone investment position