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X5CrNiMoCuNb14.5 – Martensitic Stainless Steel

X5CrNiMoCuNb14.5 is a martensitic precipitation hardening stainless steel, that offers a high strength as well as a moderate corrosion resistance and toughness which is slightly better than that of most standard martensistic grades.




Element Min Max
C (Carbon) 0.07%
Cr (Chromium) 13% 15%
Cu (Copper) 1.2% 2%
Mn (Manganese) 1%
Mo (Molybdenum) 1.2% 2%
Nb (Niobium) 0.15% 0.6%
Ni (Nickel) 5% 6%
P (Phosphorous) 0.04%
S (Sulphur) 0.015%
Si (Silicon) 0.7%
Mechanical Properties Min Max
Ultimate Tensile Strength 1200 MPa
Hardness (Brinell) 360 HB


Commonly used within the aerospace, Nuclear, Pharmaceutical and petrochemical industries. Typical applications of X5CrNiMoCuNb14.5 include but are not limited to, Fasteners, valves, Pump shafts, medical devices, turbine blades etc.

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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