Chemical Composition
Base Element
C (Carbon)
0.5
%  (maximum)  
Cr (Chromium)
0.95
%    
Fe (Iron)
97.5 to 98.1
%    (estimate)
Mn (Manganese)
0.8
%    
Mo (Molybdenum)
0.2
%    
Balance
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
95 to 140
ksi    
Ultimate Tensile Strength
120 to 165
ksi    
Elongation
9 to 14
% strain    
Brinell Hardness
300
   
 
Other Information
Material Class
Country
USA
Description
Cast: 120,000-165,000 TS; 95,000-140,000 YP; 14-9 El; 22-30 RA; 300 HB; For general and structural castings; gears, shafts, housings. AISI 4145. Tough.
Designation
BIRDSBORO-45A2
Specification Type
Specification Status
Source
Available forms
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