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8640/ 8740, 40NiCrMo2, UNE 36012 (40NiCrMo2, UNE 36012 (2))
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
0.37 to 0.44
%
Cr (Chromium)
0.4 to 0.7
%
Fe (Iron)
96.4 to 97.8
%
(estimate)
Mn (Manganese)
0.7 to 1
%
Mo (Molybdenum)
0.15 to 0.3
%
Ni (Nickel)
0.4 to 0.7
%
P (Phosphorus)
0.035
% (maximum)
S (Sulfur)
0.035
% (maximum)
Si (Silicon)
0.15 to 0.4
%
Composition Note
Fe is listed as a Base element for this material, but its % value is not listed in the specification. The value shown is a calculated one.
Other Information
Material Class
Ferrous Alloy
Alloy Family
Alloy Steel
Alloy Group
Nickel chromium molybdenum steel
Alloy Sub-Group
8640/ 8740
Country
Spain
Standards Body
AENOR (Spain)
Description
Quenched and tempered
Designation
40NiCrMo2
Specification Type
Standard
Specification
UNE 36012
Specification Year
1975
Specification Status
Obsolete
Specification Status Notes
cancelled 1991
Source
Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006
Available forms
Wrought
Similar Alloys
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Links
Organizations
Asociacion Espanola de Normalizacion y Certificacion (AENOR) (Spanish Association for Standardization and Certification) (UNE)
No warranty is given for the accuracy of these data
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