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 medical, 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). 17-4 PH has good resistance to stress corrosion cracking at higher aging temperatures.

Inventory Size Ranges for 17-4 PH

Type	Thickness	AMS Standards	ASTM	UNS	Get a Quote
Coil	0.032" - 0.1425"	AMS 5604	ASTM A 693, ASTM A 564, ASTM F 899	UNS S17400	Get a Quote
Sheet	0.032" - 0.1425"	AMS 5604	ASTM A 693, ASTM A 564, ASTM F 899	UNS S17400	Get a Quote
Plate	0.1875" - 2.500"	AMS 5604	ASTM A 693, ASTM A 564, ASTM F 899	UNS S17400	Get a Quote
Bar	0.250" - 5.000"	AMS 5604	ASTM A 693, ASTM A 564, ASTM F 899	UNS S17400	Get a Quote

Not finding what you are looking for? Connect with our specialty metals sourcing group.

Characteristics of 17-4 PH stainless steel

Also known as Alloy 630, type 17-4 PH 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 plate and round bar. In addition to stocking 17-4 PH round bar further, we stock it in heat treated conditions and precision ground forms for medical and special applications. Our materials can be found in surgical instrumentation, aerospace applications, gas turbines, chemical processing equipment, oil refining equipment, food processing industries and more.

Other industry standards we comply with:

W.NR. 1.4542
PWA-LCS
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

Industry Applications for 17-4 PH

Surgical instrumentation
Fasteners
Base plates
Chemical processing equipment
Oil and petroleum refining equipment
Nuclear components and waste casks
Food grade processing equipment
Paper / pulp processing
Aircraft and Aerospace materials

Chemical Composition

Chemical Composition Percentage of 17-4 PH
	Element	Min	Max
C	Carbon	-	0.07
Mn	Manganese	-	1.00
P	Phosphorus	-	0.04
S	Sulfur	-	0.03
Si	Silicon	-	1.00
Cr	Chromium	15.00	17.50
Ni	Nickel	3.00	5.00
Cu	Copper	3.00	5.00
Nb/Ta	Columbium + Tantalum	0.15	0.45

Physical Properties

Density: 0.2820 lb/in³
Melting Range: 2560-2625°F (1404-1440°C)
Electrical Resistivity (Anneal Condition: 98 microhm-cm

Mean Coefficient of Thermal Expansion (Annealed Condition)
Temperature Range		Coefficients
°C	°F	μm/m·°C	in/in/°F·106
21-93	70-200	10.8	6.0
21-204	70-400	10.8	6.0
21-316	70-600	11.2	6.2
21-427	70-800	11.2	6.3

Thermal Conductivity (H 900 Condition)
Temperature Range		W/m·K	Btu/(hr/ft²/in/°F)
°C	°F	W/m·K	Btu/(hr/ft²/in/°F)
149	300	17.90	124
260	500	19.50	135
460	860	22.50	156
482	900	22.60	157

Specific Heat (Annealed Condition)
Temperature Range		J/gg·K	Btu/lb/°F
°C	°F	J/gg·K	Btu/lb/°F
0-100	32-212	460	0.11

Mechanical Properties

Mechanical Properties and Yield Strength 17-4 PH - Cold Flattened (Annealed)
Property	Value
Ultimate Tensile Strength, ksi (MPa)	160 (1103)
.02% Yield Strength, ksi (MPa)	145 (1000)
Elongation, % in 2" (50mm)	5.0
Hardness Rockwell C	35

Datasheet

17-4-ph-datasheet.pdf (473.3 KB)