Haynes 4.89 -

Nickel (20-24%): Stabilizes the face-centered cubic structure and improves ductility.

When a mechanic or DIYer searches for "Haynes 4.89," they are likely looking for one of two things: haynes 4.89

It looks like you’re referencing — this likely refers to the Haynes Manual for a vehicle, with section 4.89 as a specific page, diagram, or subsection. haynes 4.89

Aerospace and Gas TurbinesIn the heart of a jet engine, temperatures can easily melt standard steel. Haynes 4.89 is used for: Combustion cans and transition ducts. Afterburner components. Flame holders and liners. Turbine exhaust nozzles. haynes 4.89