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441

Type 441 is an 18% chromium, dual stabilized ferritic stainless steel with corrosion resistance similar to that of 304/304L stainless steel. Type 441 has good weldability due to titanium and niobium stabilization and has excellent resistance to stress corrosion cracking.

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441 stainless steel
USA
JP
DE
EUR
CN
ASTM
JIS
DIN
EN
GB
441
SUS441
-
1.4509
022Cr18NbTi

Chemical Composition

The typical chemical composition is shown in the table below.

Grade
Standard
441 Chemical Composition
C
Si
Mn
Cr
Ni
P
S
Mo
Others
≤ %
≤ %
%
%
%
≤ %
≤ %
≤ %
%
441
ASTM A240
0.03
1.0
1.0
17.5 - 19.5
0.03
0.04
0.03
-
Nb≤ 1.0
1.4509
EN 10088-2
0.03
1.0
1.0
17.5 - 19.5
-
0.04
0.015
-
N: 0.3 - 1.0

Mechanical Properties

The mechanical properties are given in the table below.

Grade
Standard
441 Mechanical Properties
Tensile Strength
Yield Strength 0.2%
Elongation >%
Hardness
(MPa) ≥
(MPa) ≥
HRB ≤
HB ≤
441
ASTM A240
413
241
20
77
170
1.4509
EN 10088-2
430
200
18
-
200

Properties & Typical Applications

Type 441 is superior to Type 409 in both oxidation and corrosion resistance, with typical applications including automotive manifolds and exhaust system components. The high temperature strength of Type 441 exceeds that of Type 439 and 409 stainless steels.

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