Chemical Composition
Base Element
C (Carbon)
0.65
%    
Cr (Chromium)
15 to 18
%    
Fe (Iron)
81.4 to 84.3
%    (estimate)
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
1340
MPa    
Ultimate Tensile Strength
1780
MPa    
Elongation
3
% strain    
Brinell Hardness
495
   
 
Other Information
Material Class
Country
USA
Description
Oil treated: 258,000 TS; 195,000 YS; 3 El; 6 RA; 495 HB; For balls for ball bearings, ball races, cutlery, valves, instruments, hardened machine parts; corrosion, heat and abrasion resistant.
Designation
BETHADUR NO. 440
Specification Type
Specification Status
Source
Available forms
Similar Alloys
 
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