1.3964 Datasheet
X2CrNiMnMoNNb21-16-5-3
amagnetic steel; non-magnetizable steel; austenite
-
The material 1.3964 is particularly characterized by its non-magnetic property, high tensile strength and yield strength, which is due to its high alloy content. The material is often used in seawater and near the coast thanks to its very good corrosion resistance. 1.3964 is also used in the construction of submarines.
Composition
C
Si
Mn
P
S
Cr
Mo
N
Nb
Ni
min.
-
-
4,00
-
-
20,00
3,00
0,20
-
15,00
max.
0,03
1,00
6,00
0,025
0,01
21,50
3,50
0,35
0,25
17,00
C
max.
0,03
Si
max.
1,00
Mn
min.
4,00
max.
6,00
P
max.
0,025
S
max.
0,01
Cr
min.
20,00
max.
21,50
Mo
min.
3,00
max.
3,50
N
min.
0,20
max.
0,35
Nb
max.
0,25
Ni
min.
15,00
max.
17,00
Standards and designations
Material group
Special materials
AISI/SAE
XM19
UNS
S20910
Special designations
Alloy 50; U-Boot-Stahl
Fields of application
Offshore
Shipbuilding and submarine construction
Attributes
Physical properties at 20° C
Density
7,9 kg/dm³
Specific heat
460 J/kg K
Thermal conductivity
14 W/m K
Electrical resistance
0,81 Ω mm²/m
Magnetic permeability
≤ 1,01 G/Oe
More properties
very good corrosion resistance
good weldability
high mechanical properties
no ferromagnetic properties
Delivery forms
Angle/profile
Cut to size/custom made
Flat
Hexagon
Profile tube
Round
Round tube/bushing
Sheets/sheet blanks/plates
Square