Boeing has suspended purchases of Russian titanium, a spokesperson of the company told TASS on Monday.

The American aircraft manufacturer did not comment on the fate of the Ural Boeing Manufacturing joint venture.

"Boeing has a significant stock of titanium, in particular thanks to Boeing’s initiative for the creation of a pool of suppliers around the world that has been underway for several years. Boeing has currently suspended titanium purchases from Russia. Titanium stocks and a network of alternative suppliers allow Boeing to maintain uninterrupted production of civil aircraft. The company will continue to take steps to ensure the sustainability of the business in the long term," the corporation said.

According to the Wall Street Journal, the company receives about a third of the required amount of titanium for aircraft components from Russia. The USA, Japan, China and Kazakhstan account for the rest of supplies.

VSMPO-Avisma, which is part of Russia’s Rostec state-run corporation, is a monopolist in the domestic titanium industry. It produces one third of all global titanium for the aviation sector.

The company have been supplying titanium to Boeing for about 25 years.

Titanium components are used in the production of the Boeing 737, Boeing 767, Boeing 787, Boeing 777 and Boeing 777X civil aircraft.

Earlier it was reported that Boeing suspended the supply of spare parts to Russian airlines and their technical support. The airline also suspended the work of its office in the capital of Ukraine, as well as a training center in Moscow's Skolkovo, TASS reports.