17-7PH Stainless Steel Sheet, Plate & Coil - AMS 5528, UNS S17700
17-7 PH is a precipitation-hardened stainless steel that is well suited for aerospace and other applications requiring high strength and good corrosion resistance and formability. Type 17-7 PH is a Chromium-Nickel-Aluminum, austenitic stainless steel. It is the most formable of all PH grades and has the highest strength and hardness. It is less magnetic than other PH grades and offers minimal distortion upon heat treatment. This material maintains its valuable properties at temperatures up to 800°F (427° C).
17-7 PH Inventory Size Ranges
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Standard Inventory Specifications
- UNS S17700
- AMS 5528
- ASTM A 693
- ASME SA 693
Other industry standards we comply with:
- W.NR 1.4541
- PWA-LCS
- GE Aircraft Engine (GT193)
- GE Aviation S-SPEC-35 AeDMS S-400
- RR SABRe Edition 2
- DFARS Compliant
Common Trade Names
- 17-7 (® AK Steel)
- ATI 17-7 (™ Allegheny Technologies)
- T-17-7 Stainless Steel (ThyssenKrupp VDM)
Common Applications of 17-7 PH
- Aerospace applications
- Chemical processing equipment
- Oil and petroleum refining equipment
- Food grade stainless steel for processing equipment
- General metalworking
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| C | Carbon | 0.09 maximum |
| Mn | Manganese | 1.00 maximum |
| P | Phosphorous | 0.05 maximum |
| S | Sulfur | 0.03 maximum |
| Si | Silicon | 1.00 maximum |
| Cr | Chromium | 16.00 - 18.00 |
| Ni | Nickel | 6.75 - 7.75 |
| Al | Aluminum | 0.75 - 1.50 |
17-7PH Physical Properties
- Melting Range: 2560-2625°F (1404-1440°C)
- Density: 0.2820 lb/in³
| Temperature Range | Coefficients | ||
|---|---|---|---|
| °C | °F | μm/m°C | in/in/°F·106 |
| 21-93 | 70-200 | 15.3 | 8.5 |
| 21-204 | 70-400 | 16.2 | 9.0 |
| 21-316 | 70-600 | 17.1 | 9.5 |
| 21-427 | 70-800 | 17.3 | 9.6 |
| Temperature Range | Coefficients | ||
|---|---|---|---|
| °C | °F | W/m·K | Btu/(hr/ft²/in/°F) |
| 149 | 300 | 16.87 | 117 |
| 260 | 500 | 18.46 | 128 |
| 449 | 840 | 21.05 | 146 |
| 482 | 900 | 21.05 | 146 |
| Oersteds | AT/m | μ |
|---|---|---|
| 25 | 1989 | 1.4 - 3.4 |
| 50 | 3878 | 1.4 - 3.6 |
| 100 | 7956 | 1.4 - 3.5 |
| 200 | 15.912 | 1.4 - 3.2 |
| max | max | 1.4 - 3.6 |
Electrical Resistivity (Annealed Condition)
- Microhm-cm: 80
Mechanical Properties and Yield Strength of 17-7PH
Room Temperatures (Annealed)
- Ultimate Tensile Strength psi (MPa): 130,000 (896)
- 0.2% Tensile Yield Strength psi (MPa): 40,000 (276)
- Elongation % in 2" (50mm): 35
- Hardness Rockwell: B85
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.
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.