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Titanium Grade 15 (TA15)
Complete Technical Data Sheet for Titanium Grade 15 (TA15) Chemical Composition Mechanical Properties Physical Properties International Standards & Grade Equivalents Key Applications of Titanium Grade 15 (TA15) Aerospace Structures Used for aircraft fuselage skins, structural forgings, and bulkheads that require stability at elevated temperatures. Jet Engine Components Ideal for compressor blades, discs, and casings that […]
Description
Titanium Grade 15 (TA15) Available in All Forms
TA15 titanium Plates
Our TA15 titanium plates serve as a high-performance foundation for fabricating robust structural components for the aerospace and industrial sectors. This near-alpha alloy offers an exceptional combination of high tensile strength, good weldability, and superior performance at elevated temperatures up to 500°C. It is the ideal choice for other critical parts where strength and heat resistance are paramount.
TA15 titanium Rods
Available in a range of diameters, our TA15 titanium bars and rods are a premium machining stock for high-strength, heat-resistant components. This alloy provides an excellent balance of mechanical strength and good fracture toughness, making it perfectly suited for manufacturing aerospace fasteners, engine shafts, and other critical hardware that must perform reliably under extreme thermal and mechanical stress.
TA15 titanium Tubes
Engineered for demanding high-temperature applications, our TA15 seamless titanium tubes offer outstanding structural integrity and excellent weldability. This alloy maintains its high strength and creep resistance at elevated temperatures, making it the definitive material for hydraulic lines, structural supports, and exhaust ducting in advanced aerospace and high-performance industrial systems.
TA15 titanium Wire
Our Titanium Grade 15 (TA15) wire is drawn to precise tolerances for both welding and component manufacturing. As a filler metal, it creates strong, reliable joints on titanium grade 15 base materials. As a component wire, its high strength and heat resistance make it an ideal choice for creating specialized fasteners, high-temperature springs, and other small-diameter parts that must operate in the most demanding environments.
Complete Technical Data Sheet for Titanium Grade 15 (TA15)
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Aluminum (Al) | 6.0 – 7.0 |
| Molybdenum (Mo) | 1.0 – 2.0 |
| Zirconium (Zr) | 1.0 – 2.0 |
| Vanadium (V) | 0.8 – 2.0 |
| Iron (Fe) | ≤ 0.25 |
| Silicon (Si) | ≤ 0.10 |
| Oxygen (O) | ≤ 0.15 |
| Carbon (C) | ≤ 0.10 |
| Property | Minimum Value at Room Temperature |
|---|---|
| Tensile Strength | 930 MPa (135 ksi) |
| Yield Strength (0.2% Offset) | 835 MPa (121 ksi) |
| Elongation | 10% |
| Reduction of Area | 25% |
| Fracture Toughness (KIC) | 55 – 70 MPa¡Ìm |
| Property | Typical Value at 20°C (68°F) |
|---|---|
| Modulus of Elasticity | 115 GPa (16.7 x 10³ ksi) |
| Density | 4.48 g/cm³ (0.162 lb/in³) |
| Maximum Service Temperature | 500 °C (932 °F) |
| Coefficient of Thermal Expansion | 9.2 µm/m·°C (from 20-100°C) |
| Thermal Conductivity | 7.5 W/m·K |
| Standard | Equivalent Grade Designation |
|---|---|
| Chinese Standard | TA15 |
| Russian GOST | VT20 |
| UNS | Not specified (No direct equivalent) |
| AMS (Aerospace Material Spec) | Not specified (No direct equivalent) |
| Common Application Standard | GB/T 3621 (Plate), GB/T 3624 (Tube), GB/T 3625 (Bar) |
Key Features of Titanium Grade 15 (TA15)
Excellent Medium-Temperature Strength
TA15 is engineered for long-term service at temperatures up to 500°C, maintaining its structural integrity and mechanical properties even under significant and sustained thermal stress. This makes the alloy ideal for high-heat settings where conventional materials quickly lose performance, ensuring consistent reliability cycle after cycle.
High Strength-to-Weight Ratio
With impressive mechanical strength and a low density, TA15 allows designers to achieve robust structural performance without unnecessary mass. This advantage is particularly critical in industries like aerospace, motorsports, and advanced manufacturing, where every gram counts toward efficiency, payload, or speed.
Superior Corrosion Resistance
TA15 offers resistance not only to atmospheric oxidation but also to a wide range of aggressive chemicals and corrosive process environments. Its corrosion resistance minimizes the risk of premature failure, reduces maintenance needs, and increases the overall lifespan of components in the harshest operating conditions.
Good Weldability and Processability
Unlike some other high-strength alloys, TA15 can be readily welded and processed using both conventional and modern techniques, including forging, rolling, and additive manufacturing. This versatility simplifies fabrication, enabling the production of complex geometries and custom parts without sacrificing integrity.
Key Applications of Titanium Grade 15 (TA15)
Aerospace Structures
Used for aircraft fuselage skins, structural forgings, and bulkheads that require stability at elevated temperatures.
Jet Engine Components
Ideal for compressor blades, discs, and casings that operate in the engine’s medium-temperature zones.
Industrial Components
Suited for parts in industrial machinery that are exposed to both heat and corrosive elements.
What Our Clients Say
“TA15 has become our go-to material for high-temperature airframe components. Its ability to maintain high strength and resist creep at 500°C is exceptional. What’s truly remarkable is its excellent weldability, which has significantly simplified the fabrication of our complex welded assemblies without compromising performance.”
Dr. Alisha Vance
Senior Aerospace Materials Engineer
“The performance of TA15 in our manufacturing process has been excellent. Its superior weldability for a high-strength alloy allows us to create intricate, reliable joints with a much lower defect rate than other high-temp alloys. The final components are incredibly strong and perform flawlessly at the high service temperatures our clients demand.”
Lisa Johnson
Head of Fabrication
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Frequently Asked Questions
What is Titanium Grade 15 (TA15)?
Titanium Grade 15, also known as TA15, is a high-strength, near-alpha titanium alloy. Its chemical composition is typically Ti-6Al-2Zr-1Mo-1V. It is specifically engineered for excellent performance in medium-temperature environments, offering a great combination of strength, heat resistance, and good weldability.
What is the main advantage of using TA15 over other titanium alloys like Ti-6Al-4V (Grade 5)?
The primary advantage of TA15 is its superior strength and creep resistance at elevated temperatures. While Ti-6Al-4V (Grade 5) is an excellent all-purpose alloy, its performance begins to degrade above 400°C (750°F). TA15 is designed for long-term service at temperatures up to 500°C (932°F), making it the better choice for components in medium-temperature sections of jet engines and other high-heat applications.
Is TA15 difficult to machine or fabricate?
TA15 has good processability and is considered readily weldable. However, like most titanium alloys, it requires specific techniques for machining. It is less difficult to machine than some high-strength nickel-based superalloys but requires sharp tools, low cutting speeds, and high feed rates to manage heat generation and prevent work hardening.
How does the corrosion resistance of TA15 compare to other materials?
TA15 exhibits excellent corrosion resistance, especially in oxidizing acids, chloride solutions, and saltwater environments. Its performance is comparable to other alpha or near-alpha titanium alloys and is generally superior to many stainless steels, particularly in preventing pitting and crevice corrosion.
What does “near-alpha” alloy mean?
Titanium alloys are categorized based on their microstructure. “Near-alpha” alloys, like TA15, consist mainly of the alpha phase with a small amount of beta-stabilizing elements (like Molybdenum and Vanadium). This structure gives them good creep resistance, excellent strength at high temperatures, and good weldability, which are defining features of TA15.
Can TA15 be heat-treated?
Yes, TA15 is responsive to heat treatment. It can undergo annealing to relieve stress and improve toughness, or it can be solution treated and aged (STA) to achieve higher strength levels. The specific heat treatment process is chosen based on the desired final mechanical properties for the application.
Is TA15 a cost-effective material choice?
While titanium alloys have a higher initial cost than steels, TA15 provides significant value in demanding applications. Its high strength-to-weight ratio can reduce overall system weight, improving fuel efficiency in aerospace. Furthermore, its superior durability and corrosion resistance at high temperatures lead to longer component life and reduced maintenance costs, making it a cost-effective solution over the lifecycle of the part.
What are the key properties of TA15?
TA15 is known for its well-balanced properties, which include:
Excellent Medium-Temperature Strength: Maintains structural integrity and mechanical performance up to 500°C.
High Strength-to-Weight Ratio: Offers significant strength without the penalty of heavy materials like steel or nickel alloys.
Superior Corrosion Resistance: Provides outstanding resistance to a wide range of corrosive media, similar to other titanium alloys.
Good Weldability: Can be welded using various standard techniques, allowing for the fabrication of complex assemblies.
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