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254 SMO

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Alias

254 SMO
1NiCrMoCuN20-18
Z2 CNDU 20.18.7
S31254
SS 2378

Chemistry

Base Element Fe(Iron)
High-alloy austenitic stainless steel

Element Min Max
C(Carbon) 0.02%
Cr(Chromium) 20.5%
Mo(Molybdenum) 6.5%
N(Nitrogen) 0.22%
Ni(Nickel) 17.5% 18.5%
Mn (Manganese) 1.00%
P (Phosphorus) 0 030%
S (Sulphur) 0.010%
Si (Silicon) 0.8%
Cu (Copper) 0.05% 1%

Mechanical Properties

Mechanical Property Min Max
Ultimate Tensile Strength (UTS) 650 MPa
Yield Stress 300 MPa
Elongation 35%
Gauge Length A5D

Heat Treatment
Hot rolled, annealed, pickled
Hot rolled, annealed, machined
Hot rolled, annealed, ground

Uses

Bolting
Used in Sea water and other aggressive chloride-bearing mediums. (I.e. Ships)

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