17-4 PH Stainless Steel Sheet, Coil and Plate - AMS 5604, UNS S17400
17-4 PH steel (AMS 5604) is a grade of martensitic, precipitation-hardening stainless steel with the additions of chromium, nickel, and copper. 17-4 stainless steel has a valuable combination of high strength, good corrosion resistance, and toughness in both base metals and welds. This material provides excellent corrosion resistance (comparable to grade 304) for many chemical, paper, and food processing industries, and it withstands corrosive attacks better than most hardenable stainless steels. These properties give designers the ability to add reliability to their products while simplifying fabrication and often reducing their costs. High strength is maintained to approximately 600°F (316°C). 17-4ph has good resistance to stress corrosion cracking at higher aging temperatures.
17-4 PH Inventory Size Ranges
0.1875" - 2.500"
0.250" - 5.000"
Characteristics of 17-4 PH stainless steel
Also known as Alloy 630, type 17-4PH is the most widely used of all precipitation-hardening steels. Compared to other PH alloys, it requires a simple heat treatment to produce a wide range of properties, including its high strength. It has a slightly higher ferrite content than other PH grades, making it a bit more magnetic. To improve formability, heat treatments may be used before cold working.
We are suppliers of 17-4 PH stainless steel sheet and coil, in addition to stocking 17-4 PH round bar and plate. Our materials can be found in aerospace applications, gas turbines, chemical processing equipment, oil refining equipment, food processing industries and more.
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Standard Inventory Specifications
- UNS S17400
- AMS 5604
- ASTM A 693
- ASME SA 693
Other industry standards we comply with:
- W.NR. 1.4542
- S1000 / S-SPEC-1
- GE Aviation S-SPEC-35 AeDMS S-400
- RR SABRe Edition 2
- DFARS Compliant
Common Trade Names
- 17-4 (® AK Steel)
- ATI 17-4 (™ Allegheny Technologies)
- Type 630 stainless
Common Applications of 17-4 PH
- Aircraft and Aerospace materials
- Base plates
- Chemical processing equipment
- Oil and petroleum refining equipment
- Nuclear components and waste casks
- Food grade stainless steel for processing equipment
- General metalworking applications that call for precipitation-hardening stainless steel
- Paper / pulp processing
17-4PH Physical Properties
- Melting Range: 2560-2625°F (1404-1440°C)
- Density: 0.2820 lb/in³
Electrical Resistivity (Annealed Condition)
- Microhm-cm: 98
Please contact us for more details. The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed. For a deeper understanding of the difference between 17-4 PH and 17-7 PH precipitation hardening alloys, request our white paper on the topic.