Union officials have pledged to work with management to preserve jobs at Sheffield-based advanced manufacturing business Firth Rixson.
The Meadowhall-based business has announced as many as 70 jobs could go at two plants in the city.
Management and workers’ representatives are due to meet on Monday.
Doug Patterson, regional officer with Unite the Union, said: “We will be seeking to work with the company to minimise job losses and avoid the worst case scenario.
“I think they have got some order book problems, but they are continuing to invest in the business and see their long term future to be in Sheffield.
“The problems they are facing are the same for all industries linked to aerospace. There appears to have been a drop off in order books since Christmas.”
Around 50 jobs are under threat at Firth Rixson Meadowhall plant and a further 20 jobs are threatened at its River Don works on Milford Street.
Firth Rixson’s Meadowhall plant makes nickel, titanium and steel alloy forgings for the off-road automotive, aerospace, power generation and defence sectors.
Its River Don site makes forgings from stainless and carbon steels, nickel superalloys and titanium alloys and supplies closed die forgings and seamless rings to the aerospace, petrochemical, mining, defence and general engineering markets.
The firm has signed a seven year deal worth around £336m to supply seamless rolled rings to Rolls-Royce for use in the aero engine manufacturer’s existing and next generation engine programmes.