Datasheet

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1.4547

Brand name

Avesta® 254 SMO

Standards

Material No.
1.4547
EN Designation
X1CrNiMoCuN20-18-7
UNS
S31254
Alloy
254 SMO

Description

1.4547 / 254 SMO is an austenitic chromium-nickel-molybdenum stainless steel.

Special properties

Outstanding resistance to localized corrosion such as pitting and crevice corrosion, as well as to stress-corrosion. Acceptable seawater-corrosion.

Chemical Composition

C
%
≤ 0.02
Si
≤ %
0.70
Mn
≤ %
1.00
P
≤ %
0.03
S
≤ %
0.01
Cr
%
19.5-20.5
Mo
%
6.00-7.00
Ni
%
17.5-18.5
N
%
0.18-0.25
Cu
%
0.50-1.00

Mechanical Properties 20°C

Hardness HB 30
≤ HB
250
0.2% Yield strength Rp
≥ N/mm²
300
Tensile strength Rm
N/mm²
650-850
Elongation A5
≥ %
35
Modulus of elasticity
kN/mm²
200

Physical Properties 20°C

Density
g/cm³
8
Specific heat capacity
J/kg K
500
Thermal conductivity
W/m K
13
Electrical resistivity
Ω mm²/m
0.85

Suitable welding
filler materials

1.4547

Application

Chemical industry, offshore, seawater desalination plant

Available forms for 1.4547 / ALLOY 254 SMO

Sheets/Plates
Lieferform
Bars
Lieferform
Tubes/Pipes
Lieferform
Fittings
Lieferform
Forged / cast parts
Lieferform
Finished part (drawing)
Lieferform