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BS S150 – Martensitic stainless steel

BS S150 is a martensitic stainless steel which has undergone a high level of metallurgical testing so that it can be used for in aerospace applications.

It has comparable structural strength to low alloy carbon steels but with much superior corrosion resistance and therefore can be used in structural components such as the landing gear on commercial aircraft.

It is capable of hardening upon air cooling, has a high resistance to stress-corrosion and can be used at elevated temperatures up to 650°C.  This makes it suitable for gas turbines applications both for commercial aircraft and power generation.


WL 1.4914
Jethete M160
SF 448
Esshete 448


Element Min Max
C (Carbon) 0.08% 0.16%
Cr (Chromium) 9.8% 11.2%
Mn (Manganese) 0.3% 1.2%
Mo (Molybdenum) 0.4% 0.8%
N (Nitrogen) 0.03% 0.075%
Nb (Niobium) 0.15% 0.45%
Ni (Nickel) 0.6% 1.2%
P (Phosphorus) 0.03%
S (Sulphur) 0.025%
Si (Silicon) 0.15% 0.6%
V (Vanadium) 0.1% 0.25%
Mechanical Properties Min Max
Ultimate Tensile Strength (UTS) 930 MPa 1080 MPa
0.2% Proof Stress 780 MPa
ELongation 10%
Hardness (Brinell) 285 331 HB


Heat Resisting

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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