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317L

Stainless steel grade 317L is a low carbon version of grade 317 stainless steel. It has the same high strength and corrosion resistance as 317 steel but can produce stronger welds due to the low carbon content.

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papermaking stainless steel 317L
USA
JP
DE
EUR
CN
ASTM
JIS
DIN
EN
GB
317L
SUS317L
X2CrNiMo 18-15-4
1.4438
022Cr19Ni13Mo3

Chemical Composition

The typical chemical composition is shown in the table below.

Grade
Standard
317L Chemical Composition
C
Si
Mn
Cr
Ni
P
S
Mo
Others
≤ %
≤ %
%
%
%
≤ %
≤ %
≤ %
%
317L
ASTM A240
0.03
0.75
2.0
18.0 - 20.0
11.0 - 15.0
0.045
0.03
3.0 - 4.0
N≤ 0.10
1.4438
EN 10088-2
0.03
1.0
2.0
17.5 - 19.5
13.0 - 16.0
0.045
0.015
3.0 - 4.0
N≤ 0.10
SUS317L
JIS G 4304 | JIS G 4305
0.03
1.0
2.0
18.0 - 20.0
11.0 - 15.0
0.045
0.03
3.0 - 4.0
-

Mechanical Properties

The mechanical properties are given in the table below.

Grade
Standard
317L Mechanical Properties
Tensile Strength
Yield Strength 0.2%
Elongation >%
Hardness
(MPa) ≥
(MPa) ≥
HRB ≤
HB ≤
317L
ASTM A240
515
205
40
95
217
1.4438
EN 10088-2
500
200
35
95
215
SUS317L
JIS G 4304 | JIS G 4305
480
175
40
90
187

Properties & Typical Applications

317L, compared with conventional stainless steel, has higher ductility, stress corrosion resistance, compressive strength and high temperature resistance. It is low carbon grade or L grade, which is resistant to sensitization during welding and heat treatment. It’s mainly used in large-caliber butterfly valve parts, butterfly valve shaft, butterfly valve sleeve, internal flow fasteners, etc.

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