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AMS 5643, AMS 5604, AMS 5622, 17-4ph Stainless Steel

Typical Applications

Motor Shafts

Aircraft Structural Parts

Valve Stems

Gears

The 17/4PH is an austenitic stainless steel alloy that has superior resistance to corrosion and outstanding mechanical properties. Conforming to the stringent AMS 5604, AMS 5622, and AMS 5643 specifications, this alloy is meticulously engineered to meet the most demanding industrial requirements.

The exceptional corrosion resistance of the 17/4PH alloy stems from its carefully crafted chemical composition, blending chromium, nickel, and copper in precise proportions, this unique formulation imbues the material with an unrivaled ability to withstand a broad spectrum of corrosive environments.

Moreover, the alloy's precipitation hardening capabilities allow for precise control over its mechanical properties, through a carefully controlled heat treatment process, 17/4PH can achieve remarkable strength and hardness levels while maintaining excellent toughness and ductility.

The remarkable combination of high strength and lightweight characteristics makes the 17/4PH alloy exceptionally well-suited for applications where optimal strength-to-weight ratios are paramount. From aerospace components that demand superior performance without compromising on weight, to oil and gas equipment subjected to harsh environments, and intricately designed precision engineering parts requiring meticulous craftsmanship, this versatile material excels across a wide range of demanding applications.

Technical specification

Related Specifications

AMS 5604
AMS 5622
AMS 5643
UNS S17400
W.Nr 1.4548

Specific Gravity

7.74 g/cm3

Chemical Composition (WT %)

 
Min  
Max  
C  
-  
0.07  
Si  
-  
1.00  
Mn  
-  
1.00  
P  
-  
0.040  
S  
-  
0.030  
Cr  
15.00  
17.50  
Mo  
-  
0.50  
Ni  
3.00  
5.00  
Cb  
5 x %C  
0.45  
Cu  
3.00  
5.00  
Fe  
Bal  
-  

Typical Mechanical Properties in the Annealed Condition

 
 
-
H900
H925
H1025
H1075
H1100
H1150
0.2% Proof Stress  
MPA  
Min  
-
1172
1069
1000
862
793
724
Tensile Strength  
MPA  
Min  
-
1310
1172
1069
1000
965
931
Elongation  
%  
Min  
L
10
10
12
13
14
16
Reduction of area  
%  
Min  
L
40
44
45
45
45
50
Hardness  
HRC  
Min  
-
388
375
331
311
302
277
Hardness  
HB  
Max  
-
444
429
401
375
363
352

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