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X2CrNiMNMoNNb21.16.5.3 austenitic stainless steel

X2CrNiMNMoNNb21.16.5.3 is an austenitic stainless steel that offers high strength and an excellent resistance to stress or cracking caused by extreme temperatures. This material is Amagnetic and contains a low magnetic permeability.




Element Min Max
C (Carbon) 0.06%
Cr (Chromium) 20.5% 23.5%
Mn (Manganese) 4% 6%
Mo (Molybdenum) 1.5% 3%
N (Nitrogen) 0.2% 0.4%
Nb (Niobium) 0.13%
Ni (Nickel) 11.5% 13.5%
Si (Silicon) 1%
Mechanical Properties Min Max
Ultimate Tensile Strength (UTS) 700 950 MPa
0.2% Proof Stress 365 MPa
Elongation 35%
Gauge Length A5D
Charpy V-Notch Impact = Room Temp. 85 Joules


Typically used for applications within the Oil & Gas, Ship building, Paper & pulp and petrochemical industries.

Information is given for illustrative purposes only. Tachart accepts no responsibility for the accuracy of the data contained within or the use of the data by any other party.
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