1.4438
X2CrNiMo18-15-4; X2CrNiMo18-16-4
stainless steel; corrosion resistant steel; austenite
Petrochemicals
The material 1.4438 is an austenitic chromium-nickel-molybdenum steel with even higher corrosion resistance than the reference material 1.4435. Due to its chemical resistance, especially to chlorides and other halogens, this steel is frequently used in the chemical and pulp processing industries.
Composition
C
Si
Mn
P
S
Cr
Mo
N
Ni
min.
-
-
-
-
-
17,50
3,00
-
13,00
max.
0,03
1,00
2,00
0,045
0,015
19,50
4,00
0,110
16,00
C
max.
0,03
Si
max.
1,00
Mn
max.
2,00
P
max.
0,045
S
max.
0,015
Cr
min.
17,50
max.
19,50
Mo
min.
3,00
max.
4,00
N
max.
0,110
Ni
min.
13,00
max.
16,00
Standards and designations
Material group
Stainless steel
AFNOR
Z3CND19-15-04
AISI/SAE
317L
B.S.
317S12
JIS
SUS 317 L
UNS
S31700; S31703
Fields of application
Chemistry, petrochemistry
Pulp and textile industry
Apparatus and vessel construction
Fittings
Pump industry
Paper industry
Attributes
Physical properties at 20° C
Density
8,00 kg/dm³
Specific heat
500 J/kg K
Thermal conductivity
14 W/m K
Electrical resistance
0,85 (ohm) mm²/m
Magnetizability
very low
Delivery forms
Cut to size/custom made
Profile tube
Round
Round tube/bushing
Sheets/sheet blanks/plates
