After a review and consultation with the market, which ended on February 5, from February 17, Metal Bulletin will change the frequency of its in-warehouse Chinese tungsten concentrate assessment from twice a week to once a week.

The price will be published once a week, on Wednesdays.

The chemical specification and delivery terms will be as follows:

Description: Tungsten concentrate 65% WO3, China domestic spot market
Price: Yuan per tonne, in-warehouse China
WO3: 65% min
S: 0.8% max
P: 0.10% max
As: 0.15% max
Mo: 0.05% max
Ca: 5% max
Mn: 1.5% max
Cu: 0.25% max
Sn: 0.25% max
SiO2: 7.0% max
Form: Powder
Lot size: 50 tonnes min
Payment terms: Cash or 30 days
Assessment: On Wednesdays by Metal Bulletin’s Singapore office, except when that office is closed for public holidays. Such times will be notified well in advance.
Publication: Weekly. Between 2pm and 3pm London time on Wednesdays

If you have any comments or queries about the proposal, please contact Rena Gu, the reporter responsible for the tungsten price assessments at

Questions relating to Metal Bulletin’s pricing methodology and policy should be sent to Metal Bulletin market data and compliance manager Paolo Sorze at or Metal Bulletin editor Alex Harrison at