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Drill bit cutting metal, an example of the hard metal tools made from tungsten

Tungsten APT and concentrate

Ammonium paratungstate (APT) and wolframite or scheelite concentrate from verified producers, for hard metal and steel makers.

APT88.5% WO3 minimum
PackingAPT in steel drums; concentrate in bulk bags of about 1 tonne
DeliveryFOB, CIF, CFR
InspectionIndependent, at loading

Tungsten APT and concentrate: typical specification

Indicative
APT
88.5% WO3 minimum
Wolframite concentrate
Typically 65% WO3, with limits on tin, arsenic and sulphur
Scheelite concentrate
Typically 65% WO3
Packing
APT in steel drums; concentrate in bulk bags of about 1 tonne
Pricing basis
Per mtu WO3, against a published APT reference price

Typical specification for reference. The binding specification for each lot is the producer certificate of analysis and the contract.

Export controls and complianceTungsten is a conflict mineral under EU and US rules, and tungsten products are subject to export controls in some producing countries, including China. We confirm the origin, the export licence position and sanctions screening before any deal proceeds.

Delivery terms

FOBBuyer arranges the vessel and takes title at the load port.
CIFSeller arranges freight and insurance to the buyer discharge port.
CFRSeller arranges freight to the discharge port. The buyer insures the cargo.

Documents supplied

Certificate of analysisCertificate of originIndependent inspection and weight certificatePacking listBill of ladingChain of custody and responsible sourcing documents

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 tungsten apt and concentrate

Tungsten is the hardest-wearing of the common industrial metals. Most of it ends up in tungsten carbide for cutting tools, drill bits and wear parts, with the rest in high speed steels and alloys.

APT is the main traded intermediate, made by chemical processing of tungsten concentrate. Prices are quoted per metric tonne unit (mtu) of tungsten trioxide, which is 10 kg of WO3.

Frequently asked questions

What is APT?

Ammonium paratungstate, a white crystalline intermediate of about 88.5% WO3. It is the main form in which tungsten is traded and the feedstock for tungsten powder and carbide.

What is an mtu?

A metric tonne unit, 1% of a tonne, or 10 kg of the contained WO3. Tungsten prices are quoted per mtu.

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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