Specification :

Grade 5 ( 6-4) [ Titanium]
Grade 5 titanium is the workhorse of all the titanium grades. It is also know as Ti-6AL-4V or simply Ti 6-4. Its high strength, light weight and corrosion resistance enables Ti 6-4 to be used in many applications. The most comon market is aerospace. The alloy is also " age hardenable" by heat treatment to achieve even higher strengths.

Market Applications
Aerospace, Medical, Marine, Chemical Processing

Ti-6Al-4V

Category Titanium Alloy
Class Wrought
Type Alpha-beta alloy
Designations United States: ASTM B265 Grade5, ASTM B348 Grade5, ASTM B381 Grade5, MIL-T-9046, MIL-T-9047, AMS 4928, AMS 4911, AMS 4906, AMS 4965

Physical Properties
Table 2. Typical physical properties for Ti6Al4V.
Property Typical Value
Density g/ cm3 ( lb/ cu in) 4.42 ( 0.159)
Melting Range ° C± 15° C ( ° F) 1649 ( 3000)
Specific Heat J/ kg.° C ( BTU/ lb/ ° F) 560 ( 0.134)
Volume Electrical Resistivity ohm.cm ( ohm.in) 170 ( 67)
Thermal Conductivity W/ m.K ( BTU/ ft.h.° F) 7.2 ( 67)
Mean Co-Efficient of Thermal Expansion 0-100° C / ° C ( 0-212° F / ° F) 8.6x10-6 ( 4.8)
Mean Co-Efficient of Thermal Expansion 0-300° C / ° C ( 0-572° F / ° F) 9.2x10-6 ( 5.1)
Beta Transus ° C± 15° C ( ° F) 999 ( 1830)
Mechanical Properties
Table 3. Typical mechanical properties for Ti6Al4V.
Property Minimum Typical Value
Tensile Strength MPa ( ksi) 897 ( 130) 1000 ( 145)
0.2% Proof Stress MPa ( ksi) 828 ( 120) 910 ( 132)
Elongation Over 2 Inches % 10 18
Reduction in Area % 20
Elastic Modulus GPa ( Msi) 114 ( 17)
Hardness Rockwell C 36
Specified Bend Radius 0.070 in x Thickness 5.0
Welded Bend Radius x Thickness 6
Charpy, V-Notch Impact J ( ft.lbf) 24 ( 18)
Fabrication
• Weldability – Fair
• Forging – Rough 982° C ( 1800° F) , finish 968° C ( 1775° F)
• Annealing - 732° C ( 1350° F) , 4hr, FC to 566° C ( 1050° F) , A.C. F.C. not necessary for bars
• Solution Heat Treating – Forgings
• Ageing – 904-954° C ( 1660-1750° F) , 5 min-2hrs, W.Q. 538° C ( 1000° F) , 4hr, A.C.
Applications
As mentioned previously, this alloy is the most popular of the titanium alloys. It is used for a range of applications in the aerospace, marine, power generation and offshore industries