17-4 PH (UNS S17400 / W.Nr. 1.4542)
17-4 PH (UNS S17400 / W.Nr. 1.4542) stainless steel is the most widely used of all of the precipitation-hardening stainless steels. Its valuable combination of properties gives designers opportunities to add reliability to their products while simplifying fabrication and often reducing costs. Type 17-4 PH is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, and good mechanical properties at temperatures up to 600°F (316°C). Its unique combination of properties make this alloy an effective solution to many design and production problems.
Chemical Composition, %
Typical Physical and Mechanical Properties (RT, Annealed)
|Density, g/cm3||Melting Point, ℃||Tensile Strength, MPa||Yield Strength, MPa||ELongation, %||Hardness, HRB|
Available Products and Specifications
|Rod, Bar, Wire and Forgings||ASTM A564, 705, SAE AMS 5669|
|Plate, Sheet and Strip||ASTM A693, SAE AMS 5862|
|Pipe and Tube||–|
- Excellent resistance to corrosion
- Provide toughness in both base metals and welds.
- Well suited to applications that require ease of fabrication and then the addition of strength/hardness for improved reliability
- Aerospace – structural and parts
- Biomedical – hand tools
- Chemical Processing
- Food Process Equipment
- Gate Valves
- Mechanical Components
- Nuclear Waste Processing and Storage
- Oil and Gas Production – foils, helicopter deck platforms, etc.
- Pulp and Paper – paper mill equipment