13-8PH (AMS 5629)

13-8PH is a precipitation-hardening steel alloy with high strength and toughness and good corrosion resistance. Even in larger sections, the alloy consistently offers superior ductility and transverse toughness. The alloy's chemical composition combined with a controlled melting practice ensures that the material's microstructure is typically ferrite-free. In production, the alloy is double melted in a vacuum induction furnace (VIM) followed by consumable electrode vacuum melt (CEVM / VAR). A single precipitation-hardening heat treatment creates the performance characteristics of the alloy. 13-8PH offers suitability in applications where good ductility, corrosion resistance, stress-corrosion resistance, and high strength are predetermined requirements.

Commercial Applications

Typical examples include aerospace structural parts, nuclear reactor components and high-performance shafts.

Stock Availability

We stock 13-8PH stainless steel bars in various sizes, shapes and tempers (including annealed, H950, H1025, H1050, H1100 and H1150 tempers).