Chemical Composition
Base Element
C (Carbon)
0.25
%  (maximum)  
Fe (Iron)
99 to 99.3
%    (estimate)
Mn (Manganese)
0.7
%    
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
207 to 310
MPa    
Ultimate Tensile Strength
414 to 517
MPa    
Elongation
22 to 30
% strain    
Brinell Hardness
115 to 140
   
 
Other Information
Material Class
Country
USA
Description
Cast: 60,000-75,000 TS; 30,000-45,000 YP; 115-140 HB; 22-30 El. For general and structural applications, gears, housings. Excellent weldability. AISI 1020.
Designation
BIRDSBORO-20 CN
Specification Type
Specification Status
Source
Available forms
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