AMS 5737 is a specification for A286 aka UNS S66286.
It is a precipitation hardening high strength corrosion resistant steel alloy.
It is used in applications requiring moderate strength at temperatures up to 1300 deg F or
oxidation resistance at temperatures up to 1500 deg F.
Premium aircraft quality with multiple melting and Consumable Electrode Remelting is required.
Material is in the form of Bars, Wire, Forgings, and Tubing in the solution treated and
precipitation hardened condition.
Solution heat treatment temperature is 1650 deg F followed by precipitation hardening
at 1300 to 1400 deg F to minimum specified strength requirements.
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For more info on A286 per AMS 5737 click here.