Grade Summary: Grade 17-4 PH is a chromium-nickel grade of stainless that may be hardened by a single low temperature precipitation-hardening heat treatment. It has excellent mechanical properties and a high strength level may be obtained by using the hardening treatment. Scaling and distortion is minimized. Grade 17-4 PH should not be used in the solution treated condition. The strength and corrosion resistance properties of 17-4 hold up well and it has service temperatures up to 800° F. The fabrication techniques for this steel is similar to those established for the regular stainless grades. 17-4 machines well, has excellent welding characteristics, and forges easily.
Typical Applications: Aircraft and gas turbines, nuclear reactors, paper mills, oil field industry, and chemical process components.
Available products: Round Bar, Rectangular Bar and Plate.
Typical Chemical Analysis: *C – .07 *Mn – 1.0 *Si – 1.0 *Cr – 15.0/17.5 *Ni – 3.0/5.0 *Cu – 3.0/5.0 *P – .04 *S – .04
Typical Mechanical Properties**:
* Chemical Analysis will vary on each heat number
** All values are averaged and are representative – Based on Annealed
*** % in 2”