Stainless Steel A286 AMS 5737

AMS 5737 is the aerospace material specification covering A286 stainless steel (UNS S66286) bars, wire, forgings and tubing. It’s consumable-electrode melted, solution treated at 1650°F (899°C) and precipitation heat treated to a minimum of 140 ksi tensile and 95 ksi yield.

What defines AMS 5737 is that it’s the highest-strength aged A286 you can machine straight from stock. The 1650°F treatment gives finer grain and better ductility than the 1800°F route, so it beats AMS 5732 at room and moderate temperatures. That makes it the go-to spec for machined aerospace fasteners and fittings. It’s the A286 you’ll see called out most often on bolt and stud drawings.

Typical AMS 5737 parts:

• Machined aerospace bolts, studs and nuts
• High-strength pins, shafts and fittings
• Non-magnetic fasteners for instruments and cryogenic hardware

For better long-term creep strength at high temperature, see the companion 1800°F specification AMS 5732. Full composition and properties are on the A286 stainless steel page. Tech Steel & Materials stocks AMS 5737 bar, wire, forgings and tubing to aerospace and defense tolerances. Request a quote for certified material cut to your size and quantity.