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Grade 5 Titanium-CONTINENTAL STEEL CO.,LTD
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Grade 5 Titanium pipe

May 08, 2024

Grade 5 Titanium
ASTM B265 Gr.5 - Sheet, Plate
ASTM B338 Gr.5 - Heat exchange tubes ASTM B861 Gr.5 - Titanium and titanium alloy seamless tubes
ASTM B862 Gr.5 - Titanium and titanium alloy welded pipes ASTM B348 Gr.5 - Bars ASTM B381 Gr.F5 - Forgings
Ti-6-4, UNS R56400, ASTM grade 5 titanium, Ti6Al4V

Its chemical composition is 6% aluminum, 4% vanadium, 0.25% (max) iron, 0.2% (max) oxygen, and the balance is titanium.

It is significantly stronger than commercially pure titanium (grades 1-4) while having the same stiffness and thermal properties (excluding thermal conductivity, grade 5 titanium has approximately 60% lower thermal conductivity than CP titanium)

It has many advantages, one of which is that it is heat treatable. This grade offers an excellent combination of strength, corrosion resistance, weldability and processability.

This alpha-beta alloy is the workhorse alloy of the titanium industry. The alloy is fully heat-treatable in cross-sections up to 15 mm and can be used at temperatures up to approximately 400°C (750°F). As it is the most commonly used alloy - over 70% of fused gold grades are sub-grades of Ti6Al4V, its uses cover many aerospace airframe and engine component uses, as well as major non-aerospace applications in marine, offshore and power generation, particularly It's an industry.

The addition of 0.05% Palladium (Grade 24), 0.1% Ruthenium (Grade 29) and 0.05% Palladium and 0.5% Nickel (Grade 25) significantly improves corrosion resistance in reduced acids, chlorides and acidic environments, thereby improving attack temperatures exceeding 200°C (392°F).

Chemical Composition and Mechanical Properties for Titanium alpha-beta alloy, Grade 5 (Ti-6Al-4V):

 

Titanium α-β alloy, Grade 5 (Ti-6Al-4V)
Chemical composition: O=0.08% max., Al=6%, V=4%, Ti balance
Property Value in metric unit Value in US unit
Density 4.43 *10³ kg/m³ 277 lb/ft³
Modulus of elasticity 114 GPa 16500 ksi
Thermal expansion (20 ºC) 9.5*10-6 ºCˉ¹ 5.0*10-6 in/(in* ºF)
Specific heat capacity 565 J/(kg*K) 0.135 BTU/(lb*ºF)
Thermal conductivity 6.6 W/(m*K) 45.6 BTU*in/(hr*ft²*ºF)
Electric resistivity 171*10-8 Ohm*m 171*10-6 Ohm*cm
Tensile strength (annealed) 1000 MPa 145000 psi
Yield strength (annealed) 910 MPa 132000 psi
Elongation (annealed) 18 % 18 %
Hardness (annealed) 36 HRC 36 HRC
Tensile strength (prec. hard.) 1172 MPa 170000 psi
Yield strength (precip. hard) 1103 MPa 160000 psi
Elongation (precip. hardened) 10 % 10 %
Hardness (precipitate. hardened) 41 HRC 41 HRC
Solution temperature 900 ºC 1650 ºF
Aging temperature 510 ºC 950 ºF
Aging time 4-8 hrs. 4-8 hrs.
Liquidus temperature 1660 ºC 3020 ºF
Solidus temperature 1605 ºC 2920 ºF
Beta Transus temperature 996 ºC 1825 ºF

 

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