Chemical Composition
Base Element
C (Carbon)
0.35
%    
Cr (Chromium)
0.45
%    
Fe (Iron)
96.8
%    (estimate)
Mn (Manganese)
0.8
%    
Mo (Molybdenum)
0.6
%    
W (Tungsten)
1
%    
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
827
MPa    
Ultimate Tensile Strength
965
MPa    
Elongation
18
% strain    
Brinell Hardness
321
   
 
Other Information
Material Class
Country
USA
Description
Heat treated: 140,000 TS; 120,000 YS; 18 El; 50 RA; 321 HB; At 1000 F: 110,000 TS; 90,000 YS; 20 El; 70 RA; 241 HB; For bolts, studs, forgings; creep resistant, oil hardened.
Designation
SUPERTEMP
Specification Type
Specification Status
Source
Available forms
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