Cobalt metal and hydroxide: typical specification
Indicative- Cobalt metal
- 99.8% Co minimum, cathode, broken cathode or briquettes
- Cobalt hydroxide
- Typically 20% to 40% Co, dry basis
- Moisture, hydroxide
- As agreed, settled on final assay
- Packing
- Metal in steel drums of about 250 kg; hydroxide in bulk bags
- Pricing basis
- Published cobalt reference price, or a payable percentage for hydroxide
Typical specification for reference. The binding specification for each lot is the producer certificate of analysis and the contract.
Delivery terms
Documents supplied

Inspected at loading. Paid against documents.
Independent inspection by SGS, Bureau Veritas, Intertek or an equivalent accredited surveyor, with payment by documentary letter of credit.
About cobalt metal and hydroxide
Cobalt is used in lithium-ion battery cathodes, superalloys for jet engines, hard metals and chemicals. Most mined supply comes from the Democratic Republic of the Congo, and most refining takes place in China.
Refined cobalt is sold as cathode, broken cathode, briquettes or rounds. Cobalt hydroxide is an intermediate product sold to refiners and priced as a percentage of the metal price.
Frequently asked questions
What is the difference between cobalt metal and hydroxide?
Cobalt metal is the refined product of 99.8% or higher. Cobalt hydroxide is an intermediate from mine processing, sold to refiners who turn it into metal or cobalt sulphate.
Can you supply cobalt with responsible sourcing documents?
Yes. We work with producers that can show the mine of origin and the chain of custody, and we check against OECD guidance before any offer is made.
How is payment usually made?
By documentary letter of credit from a bank acceptable to the seller, with payment against shipping documents and the inspection certificate.
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