17.4 PH is a chromium-nickel grade of stainless that may be hardened by a single low temperature precipitation-hardening heat treatment. Excellent mechanical properties at a high strength level may be obtained by such treatment. Scaling and distortion is minimized. 17-4 PH should not be used in the solution treated condition. The strength and corrosion resistance properties of 17-4 hold up well is service temperatures up to 800째 F. 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.

Uses

17-4 Precipitation Hardening also known as Type 630 is a chromium-copper precipitation hardening stainless steel used for applications requiring high strength and a moderate level of corrosion resistance. High strength is maintained to approximately 600 degrees Fahrenheit (316 degrees Celsius).

Application

• Offshore (foils, helicopter deck platforms, etc.)
• Food industry
• Pulp and paper industry
• Aerospace (turbine blades, etc.)
• Mechanical components
• nuclear reactors
• paper mills
• oil field industry
• chemical process components.

Chemical Composition