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1.4509 Datasheet

X2CrTiNb18
stainless steel; corrosion resistant steel; ferrite

Energy & environmental technology, Petrochemicals, Vehicle construction & e-mobility

The material 1.4509 is a ferritic chromium steel with good corrosion resistance and medium mechanical properties. In contrast to the austenitic stainless steels, this grade has excellent resistance to stress corrosion cracking, which is why it is mainly used in exhaust systems.

Composition

C
Si
Mn
P
S
Cr
Nb
Ti
min.
-
-
-
-
-
17,50
(3xC)+0,30
0,10
max.
0,03
1,00
1,00
0,040
0,015
18,50
1,00
0,60
C
max.
0,03
Si
max.
1,00
Mn
max.
1,00
P
max.
0,040
S
max.
0,015
Cr
min.
17,50
max.
18,50
Nb
min.
(3xC)+0,30
max.
1,00
Ti
min.
0,10
max.
0,60

Standards and designations

Material group
Stainless steel
AFNOR
Z3CTNb18
AISI/SAE
441
B.S.
X2CrTiNb18
JIS
SUS 430 LX
UNS
S43940

Fields of application

Automotive industry

Catalysts & Exhaust Systems

Mechanical engineering

Plant engineering

Chemistry, petrochemistry

Apparatus and tank construction

Attributes

Physical properties at 20° C

Density
7,70 kg/dm³
Specific heat
460 J/kg K
Thermal conductivity
25 W/m K
Electrical resistance
0,60 (ohm) mm²/m
Magnetizability
available

Thermal treatment

Hot forming
800 - 1100 °C
Solution annealing
750 - 850 °C

More properties

good corrosion resistance
good chemical resistance
good forgeability
medium mechanical properties
medium weldability

Delivery forms

Flat
Icon Flach
Profile tube
Icon Profilrohr
Round
Icon Rund
Round tube/bushing
Icon Rundrohr
Sheets/sheet blanks/plates
Icon Bleche
Slit strip
Icon Spaltband
Important note: The information on the properties or usability of materials or products is for information purposes only and does not constitute a contractual obligation. The information merely corresponds to the experience of the manufacturers and HSM®. All information is without guarantee. Misprints, errors and changes reserved.

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