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PH13-8Mo per AMS 5629

AMS 5629 is a specification covering PH13-8Mo Stainless Steel, Corrosion-Resistant, Bars, Wire, Forgings, Rings, and Extrusions in the Vacuum Induction Melting (VIM) and then Consumable Electrode Melted (CEM), Solution Heat Treated (Annealed) Condition, while also being Precipitation Hardenable

PH13-8 Mo Stainless Steel per AMS 5629

PH13-8 Mo per AMS 5629 Stainless Steel (UNS S13800) is a martensitic precipitation-hardening stainless steel that has excellent strength, high hardness, superior toughness, and good corrosion resistance. Good transverse toughness properties are achieved by tight chemical composition control, low carbon content, and vacuum melting. The alloy is produced by vacuum induction melting (VIM) followed by electro-slag remelting (ESR). As a result of this melt practice, excellent macro- and microcleanliness is achieved, and tight compositional control is implemented.

The strengthening mechanism of AMS 5629 (precipitation hardening in a martensitic matrix) makes it possible to achieve uniform strengthening in heavy sections. Strength and ductility levels can be tailored to the application by varying the aging temperature.

PH13-8Mo per AMS 5629 is martensitic in structure in the solution annealed condition and is further strengthened by a relatively low temperature heat treatment, which precipitates a strengthening phase in the alloy. Compared to 17-4PH, PH13-8Mo requires only a simple heat treatment, a one step process conducted at a temperature in the range 950°F (510°C) to 1150°F (620°C) depending on the combination of strength and toughness desired. 

Applications of AMS 5629

In landing gear, PH13-8Mo stainless steel per AMS 5629 can be used for the structural components, such as the struts and actuators. Its high strength and toughness make it suitable for withstanding the stresses of landing and takeoff.

PH13-8Mo Round Bar per AMS 5629 diameters range from 0.125″ to 14.00″ diameter.

AMS 5629, AMS 5629, FIGHTER JET METALS

PH13-8 Mo STAINLESS STEEL SPECIFICATIONS

BARS & FORGINGS

LOCKHEED SPECIFICATIONS

LIEBHERR SPECIFICATIONS

PH13-8Mo STAINLESS STEEL HEAT TREATING CONDITIONS