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Units
Metric
CGS (Consistent)
FPS (Consistent)
IPS (Consistent)
SI (Consistent)
UK Imperial
US Customary
Grade WP S31254, ASME SA403/SA403M, Fitting; longitudinal
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Chemical Composition
Base Element
Fe (Iron)
C (Carbon)
0.02
% (maximum)
Cr (Chromium)
19.5 to 20.5
%
Cu (Copper)
0.5 to 1
%
Mn (Manganese)
1
% (maximum)
Mo (Molybdenum)
6 to 6.5
%
Ni (Nickel)
17.5 to 18.5
%
P (Phosphorus)
0.03
% (maximum)
S (Sulfur)
0.01
% (maximum)
Si (Silicon)
0.8
% (maximum)
Other elements
N2C = 0.18 to 0.22
Mechanical Properties
Tabular Data
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Dimensions
Yield Strength (MPa)
Ultimate Tensile Strength (MPa)
Elongation (% strain)
None Specified
≥ 303
648 to 820
≥ 28
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Yield Strength
303
MPa (minimum)
Ultimate Tensile Strength
648 to 820
MPa
Elongation
28
% strain (minimum)
Notes on Mechanical Properties
Elongation in 4 D
Other Information
Material Class
Ferrous Alloy
Alloy Family
High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels)
Alloy Group
Austenitic stainless steel
Alloy Sub-Group
F44
Country
USA
Standards Body
ASME (USA)
Description
Wrought austenitic stainless steel piping fittings for pressure piping applications; longitudinal
Alternate Name
Grade CR S31254
Designation
Grade WP S31254
Specification Type
Standard
Specification
ASME SA403/SA403M
Specification Year
2011
Specification Status
Active
Similar UNS Number
S31254
Source
BPVC Section II-Materials-Part A-Ferrous Materials Specifications
Organization
ASME International (ASME)
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Links
Organizations
ASME International (ASME)
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