Grade 5, also known as Ti6Al4V, Ti-6Al-4V, Ti 6-4, Ti64, TC4 or R56400 is the most commonly used titanium alloy. It has a chemical composition of 6% aluminium, 4% vanadium, 0.25% (maximum) iron, 0.2% (maximum) oxygen, and the remainder titanium. Grade 5 is used extensively in Aerospace, Medical, Marine, and Chemical Processing. It is significantly stronger than commercially pure titanium while having the same stiffness and thermal properties. Among its many advantages, it is heat treatable. This grade has an excellent combination of strength, corrosion resistance, weld and fabricability. In consequence, its uses are numerous such as for military aircraft or turbines. It is also used in surgical implants. Generally, it is used in applications up to 400 degrees Celsius. Its properties are very similar to those of the 300 stainless steel series, especially 316. Ti-6Al-4V is a two phase alpha + beta grade of titanium and is the most widely used of all the titanium grades.

Ti6Al4V is widely used in many applications because of its optimum blend of properties. The default mill supply condition is Annealed condition. It can undergo further heat treatment called Solution Treated & Aged (STA) to increase the tensile properties of the material.

Singapore's No.1 Titanium Grade-5 Ti6Al4V rods and bars,
AMS 4911
AMS 4967 AMS 6930 AMS 6931
AMS-T-9046 AMS-T-9047 MIL-T-9046
MIL-T-9047 ASTM B348 ASTM B265
ASTM F1472 DMS 1592 DMS 1570

Grade-5 titanium can be welded using Grade-5 titanium as a filler metal. The weldment area has to be shielded with inert gases to prevent the pickup of oxygen in the weld area which can cause embrittlement and failure. Gas tungsten arc welding is the most commonly used welding process for Ti 6Al-4V alloy, though gas metal arc welding is used for welding thicker sections.

Titanium Grade 5 Ti6Al4V parts have good machinability and can be machined as precision parts. The following factors contribute to efficient machining of Ti6Al4V parts: Low cutting speeds, high feed rate, generous quantities of cutting fluid, sharp tools and a rigid setup. Titan Singapore stocks extensive stock in round bars, sheets & plate. Contact us for any of your titanium project.

Chemical Composition of Titanium TI6AL4V GRADE-5
Element Percentage
Al 6
Fe 0.4 max
O 0.2 max
Ti 90
V 4
Physical Properties Titanium Grade-5 Ti-6Al-4V
Density 0.160 lb/in3
Ultimate Tensile Strength 138 ksi
Yield Tensile Strength 128 ksi
Shear Modulus 6,380 ksi
Shear Strength 79.8 ksi
Fatigue Strength 74 ksi
Hardness Rockwell | Brinell C33 | 311
Elongation at Break Percentage 13%
Reduction of Area 31%
Modulus of Elasticity 16,510 ksi
Poisson's Ratio 0.34
Machinability Percentage 20%
Melting Point 2,919-3,020 °F
Specific Heat 1.3 x 10^-1 BTU/lb-°F
Thermal Conductivity 46.5 BTU-in/hr-ft^2-°F
Electrical Conductivity 1.0% IACS

Contact our Singapore HQ  Titanium Singapore or our Indonesia office Special Metals Indonesia.

Engineering Law: The primary function of the design engineer is to make things difficult for the fabricator and impossible for the servicemen. 🙂

Titanium Ti6AL4V Grade-5

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