The company said this contract extension is a "reflection of the strong and developing partnership between Doncasters and Safran Aircraft Engines", covering both precision investment castings and superalloy supply.
This agreement will take advantage of the significant state-of-the-art capital investments currently being made across Doncasters to grow capacity, and is also expected to form a framework from which to develop the relationship further over the coming years.
Doncasters CEO Mike Quinn said: “We are delighted to have reached agreement on this portfolio with Safran AE which is a reflection of the hard work and dedication of all of our employees.
“Safran AE is considered to be a key strategic partner to us and we look forward to continuing to support them with the supply of high quality product.”
A spokesman for Safran said: “We are very satisfied to renew and expand our long-term agreement with Doncasters. Doncasters will remain a strategic supplier on the Leap Program for the years to come.”