Stainless Steel 17-4PH Sheet and Plate (AMS 5604)

Technical Data Sheet


Chemical Composition Limits
Weight% C Si Mn P + S max Cr Ni Cb + Ta Cu
AMS 5604 17-4PH 0.07 max 1.0 max 1.0 max 0.04 P
0.03 S
15.0 - 17.5 3.0 - 5.0 5 X C / 0.45 3.0 - 5.0

17-4 PH  is a martensitic, precipitation-hardening stainless steel that provides an outstanding combination of high strength and hardness along with excellent corrosion resistance. 17-4 PH has good fabricating characteristics and can be age hardened by a single step, low temperature treatment. 17-4 PH is a versatile material widely used in the aerospace, chemical, petrochemical, food processing, paper and general metalworking industries.

Corrosion Resistance
17-4 PH Stainless Steel withstands corrosive attack better than any of the standard hardenable stainless steels and is comparable to Type 304 in most media.
In Condition A, 17-4 PH is hard, therefore forming normally should be limited to mild operations. However, formability can be greatly improved by heat treating before cold working or by use of hot-forming methods.

Typical Mechanical Properties

Material Alloy 17-4 PH Bar (AMS 5643)

Ultimate Tensile Strength (ksi) 0.2 % Yield Strength (ksi) Elongation % in 2D % Reduction of Area Rockwell C Hardness
Cond A - - - - 39 max
H900 190 170 10 40 40-47
H925 170 155 10 44 38-45
H1025 155 145 12 45 34-42
H1075 145 125 13 44 31-38
H1100 140 115 14 45 30-37
H1150 135 105 16 50 28-37

Material Alloy 17-4 PH Sheet/Bar (AMS 5604)

Ultimate Tensile Strength (ksi) 0.2 % Yield Strength (ksi) Elongation % in 2D (Values are for sheet <0.1874" thick) % Reduction of Area Rockwell C Hardness
Cond A - - - - 38 max
H900 190 170 5 - 40-47
H925 170 155 5 - 38-45
H1025 155 145 5 - 35-42
H1075 145 125 5 - 33-39
H1100 140 115 5 - 32-38
H1150 135 105 8 - 28-37

17-4 PH is available in Bar, Wire, Forgings, Tube, Rings, Plate, Sheet, Strip and Welding Wire. View Stock List, Plate Stock List or contact Sales for further availability.

AMS 5604 Sheet, Strip Cold Rolled and Plate.
AMS 5622 (Vac Melt) Bars (Flat, Hex, Round, Square), Wire, Forgings, Tubing and Rings
AMS 5642 Bar
AMS 5643 Bars (Flat, Hex, Round, Square), Wire, Forgings, Tubing and Rings
ASTM A564 Grade 630
ASTM A484 / ASME SA484
ASTM A564 / ASME SA564
ASTM A693 / ASME SA693 Plate, Sheet and Strip
WS 1.4542
UNS S17400

At Aircraft Materials all stock items can be shipped out within 24 hours, usually within the same day. Even cutting orders for bar or sheet can be processed and dispatched the same day, and for time-critical situations such as AOGs, we have a dedicated AOG service desk ready to help (

Thanks to our global logistics network we can source from anywhere in the world in just a few days. We use a range of transport partners to enable us to ship overnight within the U.K. and Europe and provide fast shipping solutions to the rest of the world. If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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