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Molybdenum high-speed steel, HS2-9-1-8, UNI 2955/5
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
1.05 to 1.2
%
Co (Cobalt)
7.5 to 8.5
%
Cr (Chromium)
3.5 to 4.5
%
Fe (Iron)
71.5 to 76.8
%
(estimate)
Mn (Manganese)
0.4
% (maximum)
Mo (Molybdenum)
9 to 10
%
P (Phosphorus)
0.07
% (maximum)
S (Sulfur)
0.06
% (maximum)
Si (Silicon)
0.5
% (maximum)
V (Vanadium)
0.9 to 1.4
%
W (Tungsten)
1.3 to 1.9
%
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
Tool Steel
Alloy Group
High-speed tool steel
Alloy Sub-Group
Molybdenum high-speed steel
Country
Italy
Standards Body
UNI (Italy)
Designation
HS2-9-1-8
Specification Type
Standard
Specification
UNI 2955/5
Specification Year
1982
Specification Status
Obsolete
Specification Status Notes
withdrawn
Source
Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006
Available forms
Wrought
Similar Alloys
Click here to find similar alloys
Links
Organizations
Ente Nazionale Italiano di Unificazione (UNI) (Italian National Standardization Office)
No warranty is given for the accuracy of these data
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