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UK Imperial
Martensitic stainless steel, AL TECH STAINLESS TYPE 440C (AL Tech Specialty Steel Corp.)
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
0.95 to 1.20
%
Cr (Chromium)
16.00 to 18.00
%
Fe (Iron)
77.5 to 83.1
%
(estimate)
Mn (Manganese)
1.00
% (maximum)
Mo (Molybdenum)
0.75
% (maximum)
Ni (Nickel)
0.50
% (maximum)
P (Phosphorus)
0.040
% (maximum)
S (Sulfur)
0.030
% (maximum)
Si (Silicon)
1.00
% (maximum)
Balance
Fe (Iron)
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
70.1
ksi
Ultimate Tensile Strength
110
ksi
Elongation
15
% strain
Rockwell Hardness C scale
98
Other Information
Material Class
Ferrous Alloy
Country
USA
Description
For bearings, bushings, valve components, cutlery and pump parts. High-hardening, outstanding wear resistance, good corrosion resistance. Bar, wire, billet, extruded rolled shape. Annealed: 110 ksi TS; 70 ksi YS; 15 EL; 98 HRC; 30 RA.
Designation
AL TECH STAINLESS TYPE 440C
Specification Type
Manufacturer's Specification
Specification Status
Active
Similar UNS Number
S44004
Source
Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000
Available forms
Bar
,
Bearing
,
Billet
,
Extrusion
,
Wire
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Organizations
AL Tech Specialty Steel Corp.
No warranty is given for the accuracy of these data
Copyright © 2024 ASM International®
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