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Metric
CGS (Consistent)
FPS (Consistent)
IPS (Consistent)
SI (Consistent)
UK Imperial
US Customary
430, X10CrAlSi18, ISO 4955 (X10CrAlSi18, ISO 4955 (flat))
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Chemical Composition
Base Element
Fe (Iron)
Al (Aluminum)
0.7 to 1.2
%
C (Carbon)
0.12
% (maximum)
Cr (Chromium)
17 to 19
%
Fe (Iron)
76.2 to 81.6
%
(estimate)
Mn (Manganese)
1
% (maximum)
Ni (Nickel)
1
% (maximum)
P (Phosphorus)
0.04
% (maximum)
S (Sulfur)
0.015
% (maximum)
Si (Silicon)
0.7 to 1.4
%
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.
Mechanical Properties
Yield Strength
270
MPa (minimum)
Ultimate Tensile Strength
500 to 700
MPa
Elongation
13
% strain (minimum)
Brinell Hardness
212
(maximum)
Notes on Mechanical Properties
50 mm gauge
Other Information
Material Class
Ferrous Alloy
Alloy Family
High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels)
Alloy Group
Ferritic stainless steel
Alloy Sub-Group
430
Country
International
Standards Body
ISO (International)
Description
Wrought heat resistant ferritic steel for temps>550 C, flat products 0.5<=t<=12 mm; ann.
Alternate Name
formerly Type 5
Designation
X10CrAlSi18
Specification Type
Standard
Specification
ISO 4955
Specification Year
2005
Specification Status
Active
Specification Status Notes
active 2005
Source
Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006
Available forms
Wrought
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Organizations
International Organization for Standardization (ISO)
No warranty is given for the accuracy of these data
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