Chemical Composition
Base Element
C (Carbon)
0.025
%  (maximum)  
Cr (Chromium)
24 to 26
%    
Mn (Manganese)
2
%  (maximum)  
Mo (Molybdenum)
1.6 to 2.6
%    
N (Nitrogen)
0.09 to 0.15
%    
Ni (Nickel)
20.5 to 23.5
%    
P (Phosphorus)
0.02
%  (maximum)  
S (Sulfur)
0.015
%  (maximum)  
Si (Silicon)
0.4
%  (maximum)  
 
Mechanical Properties
Tabular Data
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DimensionsYield Strength (MPa)Ultimate Tensile Strength (MPa)Elongation (% strain)
Thickness, 0.25 in. max≥ 269≥ 579≥ 25
Thickness, 0.25 in. min≥ 255≥ 538≥ 25
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Yield Strength
255
MPa  (minimum)  
Ultimate Tensile Strength
538
MPa  (minimum)  
Elongation
25
% strain  (minimum)  
Notes on Mechanical Properties
Elongation in 2 in.
 
Other Information
Material Class
Alloy Family
Alloy Group
Alloy Sub-Group
Country
USA
Standards Body
Description
Austenitic stainless steel seamless, straight-seam welded, and heavily cold-worked welded pipe; longitudinal
Designation
S31050
Specification Type
Specification
ASME SA312/SA312M
Specification Status
Similar US Grade
S31050
Similar UNS Number
S31050
Source
Organization
ASME International (ASME)
Available forms
Similar Alloys
 
Links
 



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