Titanium Grade 5 is one of the most popular and widely used titanium alloy grades. This grade of titanium offers a combination of excellent strength, toughness, and corrosion resistance. Ti6Al4V is also resistant to many acids, has good heat resistance, and is easy to work with. Let’s dive into why this grade of titanium is so popular and explore its versatile properties in greater detail.
Titanium Grade 5 Chemical Composition
|
|
Content |
|
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% |
|
Ti |
Balance |
Titanium Grade 5 Physical Properties
|
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) |
8.6×10-6 (4.8) |
|
Mean Co-Efficient of Thermal Expansion 0-300°C /°C (0-572°F /°F) |
9.2×10-6 (5.1) |
|
Beta Transus °C±15°C (°F) |
999 (1830) |
Titanium Grade 5 Mechanical Properties
|
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 |
|
4.5 |
|
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) |
Titanium Grade 5 Uses
Titanium grade 5 is an incredibly versatile metal, offering a wide range of possibilities for applications. It has become a popular choice in engineering and manufacturing due to its high strength-to-weight ratio, corrosion resistance, high thermal stability, and ease of fabrication. Common ways this material is utilized include aerospace applications, automotive components, medical implants, prosthetics and orthotics, architecture projects such as sculptures or railings, tools used in the oil industry and marine environments, and cycling frames and components. Titanium grade 5 offers durability and survivability, allowing it to excel in different problematic conditions for long periods of time. This reliable material has revolutionized many areas as it continues to be highly sought after due to its increasingly diverse uses.
Corrosion Resistance
One of the reasons why Titanium Grade 5 is so popular is because it offers excellent corrosion resistance in both natural environments and industrial environments. In natural environments like seawater, it can withstand exposure for extended periods without any significant damage or corrosion. In industrial environments, such as those exposed to hydrochloric acid, sulfuric acid, and nitric acid, it exhibits superior corrosion resistance when compared to other metals.
Heat Resistance
Titanium Grade 5 also has an impressive ability to withstand high temperatures without becoming weakened or deformed. It can be used in applications that require long-term exposure to temperatures up to 600°F (316°C). Additionally, this grade of titanium does not become brittle at low temperatures as some other metals do.
Heat Treatment
Titanium Grade 5 can be heat treated for improved strength and increased hardness levels. The process involves heating the material to a specific temperature and then cooling it at a specified rate to achieve the desired results. Heat treatment can make the metal more suitable for certain applications by increasing its strength and hardness while still retaining its excellent corrosion resistance properties.
Machining & Welding
Titanium Grade 5 is relatively easy to machine due to its ductile nature; however, it should be machined with high-speed steel tools rather than carbide tools due to its tendency to work harden quickly during machining operations. This grade of titanium can also be welded using various methods, such as gas tungsten arc welding (GTAW) or gas metal arc welding (GMAW). However, special precautions should be taken when welding this grade of titanium due to its tendency for brittle welds if proper practices are not followed.
Conclusion:
Titanium Grade 5 offers a unique combination of excellent strength, toughness, and corrosion resistance, making it one of the most popular and widely used titanium alloy grades available today. Its impressive heat resistance allows it to withstand long-term exposure up to 600°F (316°C), while its ductility makes it relatively easy to machine or weld using various techniques such as gas tungsten arc welding (GTAW) or gas metal arc welding (GMAW). For these reasons alone, it’s no wonder why so many people opt for Titanium Grade 5 when they need a durable metal that won’t let them down!
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