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B348 Grade 5

B348 Grade 5 is the American Society for Testing and Materials (ASTM) specification for titanium grade 5 material. Machined components and special fasteners manufactured from B348 Grade 5 have high tensile strength are low in weight and offer reasonable corrosion restance in some environments making them ideal for aerospace use particularly for structural fasteners.  B348 Grade 5 can be age hardened to improve the mechanical properties further which can be utilised for turbines and engine components.


B348 Grade 5



Titanium Alloy

Element Min Max
Al (Aluminium) 5.5% 6.75%
C (Carbon) 0.08%
Fe (Iron 0.4%)
N (Nitrogen) 0.05%
V (Vanadium) 3.5% 4.5%
Ti (Titanium) Balance
Mechanical Property Min Max
Tensile Strength 130 ksi
0.2% Proof Stress 120 ksi
Elongation 10%
Reduction of Area 65%
Gauge Length A4D

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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