Chemical Composition
Base Element
C (Carbon)
0.35
%  (maximum)  
Cr (Chromium)
0.85
%    
Fe (Iron)
95.7 to 96.1
%    (estimate)
Mn (Manganese)
0.75
%    
Mo (Molybdenum)
0.3
%    
Ni (Nickel)
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.
Composition Note_old
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 120
ksi    
Ultimate Tensile Strength
120 to 145
ksi    
Elongation
14 to 20
% strain    
Brinell Hardness
200 to 250
   
 
Other Information
Material Class
Country
USA
Description_old
Heat treated: 120,000-145,000 TS; 95,000-120,000 YP; 14-20 El; 30-40 RA; 200-250 HB; For general and structural castings, gears, shafting, housing. AISI 4330. Shock resistant.
Designation
BIRDSBORO-30A3
Specification Status
Specification Type
Source
Available forms
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