Chemical Composition
Base Element
C (Carbon)
0.04
%    
Cr (Chromium)
16.0
%    
Cu (Copper)
4.00
%    
Fe (Iron)
74.4 to 75
%    (estimate)
Mn (Manganese)
0.40
%    
Nb (Niobium)
0.30
%  (maximum)  
Ni (Nickel)
4.00
%    
P (Phosphorus)
0.020
%    
S (Sulfur)
0.005
%    
Si (Silicon)
0.50
%    
Ta (Tantalum)
0.30
%  (maximum)  
Balance
Other elements
Nb+Ta=0.30
Composition Note
Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one.
 
Mechanical Properties
Yield Strength
758
MPa    
Ultimate Tensile Strength
1030
MPa    
Elongation
8
% strain    
 
Other Information
Material Class
Country
USA
Description
For aerospace structural components. High strength to about 600 F (316 C), moderate corrosion resistance. Room temperature: 150 ksi TS; 110 ksi YS; 8 EL.
Designation
AL17-4 PRECIPITATION HARDENING
Specification Type
Specification Status
Similar UNS Number
S17400
Source
Available forms
Similar Alloys
 
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