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

Sheet & Coil

0.018" - 0.187"

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Plate

0.018" - 0.1875"

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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
  • S1000 / S-SPEC-1
  • 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
17-7PH 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

Linear Coefficient of Thermal Expansion 

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

 

Thermal Conductivity (TH 1050 Condition)

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

 

Magnetic Permeability (Annealed Condition)

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

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.