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Ti6Al4V Grade 5
This alpha-beta alloy is the workhorse alloy of the titanium industry. The alloy is fully heat treatable in section sizes up to 15mm and is used up to approximately 400°C (750°F). Since it is the most commonly used alloy – over 70% of all alloy grades melted are a sub-grade of Ti6Al4V, its uses span many aerospace airframe and engine component uses and also major non-aerospace applications in the marine, offshore and power generation industries in particular.
The addition of 0.05% palladium, (grade 24), 0.1% ruthenium (grade 29) and 0.05% palladium and 0.5% nickel (grade 25) significantly increase corrosion resistance in reducing acid, chloride and sour environments, raising the threshold temperature for attack to well over 200°C (392°F).
Composition
C <0.08%
Fe <0.25%
N2 <0.05%
O2 <0.2%
Al 5.5-6.76%
V 3.5-4.5%
H2 (sheet) <0.015%
H2(bar) <0.0125%
H2(billet) <0.01%
Minimum Typical
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 4.5
Specified Bend Radius >0.070 in x Thickness 5.0
