Ta5 Titanium Alloy Plate
product name: Ta5 titanium alloy plate
Color：silver
Temperature：400-600℃
Size：100x100mm
Thickness：1mm
Material Type:α-type titanium alloy
Typical component:Ti-4Al-0.005B (titanium, aluminum, boron) and trace amounts of other alloying elements.
Performance：High strength and low density
Relatively low plasticity
Good weldability and processing adaptability.
Excellent corrosion resistance, especially in seawater and chloride ion environments.
Product Introduction
What is ta5 titanium alloy plate
TA5 titanium alloy, also known as Ti-5Al, is a high-strength, corrosion-resistant, and weldable α-type titanium alloy. It is widely used in the aerospace, shipbuilding, and chemical equipment industries due to its excellent mechanical properties, good formability, and superior corrosion resistance. This article will discuss the main characteristics, properties, and applications of TA5 titanium alloy.
Products Description
1. Chemical Composition of TA5 Titanium Alloy
TA5 titanium alloy is mainly composed of titanium (Ti) and aluminum (Al), with a small amount of iron (Fe), oxygen (O), carbon (C), nitrogen (N) and other elements added. These elements give TA5 titanium alloy high strength, corrosion resistance and excellent processing performance.
The specific chemical composition of TA5 titanium alloy and its impact on alloy properties are as follows：
| The elemental | content of the element | Effection on alloy properties |
|---|---|---|
| Titanium (Ti) | About 90% or more | As a matrix element, it provides the basic structure and properties of the alloy |
| Aluminum (Al) | 5% to 6% | It enhances titanium's corrosion resistance and high-temperature properties, participates in chemical reactions to form a strengthened phase, and improves strength and hardness |
| Iron (Fe) | 0.3% to 0.5% | enhances grain refinement, improving strength and toughness |
| Boron (B) | trace amount | improves the strength and hardness of the alloy |
| nitrogen (N) | Trace amount | form a reinforcing phase at grain boundaries, improving toughness and fatigue life |
| Chromium (Cr) | Trace amount | improves corrosion resistance |
2. Mechanical Properties
TA5 titanium alloy is known for its high strength and excellent toughness. Its tensile strength typically ranges from 685 MPa to 800 MPa, and its yield strength ranges from 585 MPa to 650 MPa. The alloy also exhibits good ductility, with elongation reaching 15% or higher and reduction of area exceeding 40%, making it resistant to fracture under stress.
3. Physical Properties
TA5 titanium alloy offers excellent physical properties, including a low density of 4.5 g/cm³, which combines lightweight with high strength. Its thermal conductivity is approximately 155 W/m·K, and its electrical conductivity is approximately 1.5×10^-6 S/m, both typical values for titanium alloys. Furthermore, its low coefficient of thermal expansion, approximately 8.6×10^-6/°C, contributes to its stability under temperature fluctuations.
The specific chemical composition of TA5 titanium alloy and its impact on alloy properties are as follows：
| The elemental | content of the element | Effect on alloy properties |
|---|---|---|
| Titanium (Ti) | About 90% or more | As a matrix element, it provides the basic structure and properties of the alloy |
| Aluminum (Al) | 5% to 6% | It enhances titanium's corrosion resistance and high-temperature properties, participates in chemical reactions to form a strengthened phase, and improves strength and hardness |
| Iron (Fe) | 0.3% to 0.5% | enhances grain refinement, improving strength and toughness |
| Boron (B) | trace amount | improves the strength and hardness of the alloy |
| nitrogen (N) | Trace amount | form a reinforcing phase at grain boundaries, improving toughness and fatigue life |
| Chromium (Cr) | Trace amount | improves corrosion resistance |
4. Corrosion Resistance
TA5 titanium alloy has a significant advantage in its excellent corrosion resistance. The alloy is highly resistant to various corrosive environments, including oxidation, nitric acid, chloride solutions, and other corrosive chemical media. This makes TA5 an ideal material for use in harsh conditions such as marine, chemical, and aerospace applications.
5. Heat Treatment and Processing
TA5 titanium alloy can be heat treated to improve its mechanical properties. Common heat treatment processes include solution treatment and aging, which increase the alloy's strength and hardness. These heat treatments enable TA5 to maintain good performance even under harsh conditions, while maintaining high toughness and fatigue resistance.
The alloy is easy to process and can be shaped through various manufacturing techniques such as forging, stretching, and rolling. This makes TA5 a versatile material that can be used to produce components of various shapes and sizes.
6. Weldability
TA5 titanium alloy is known for its excellent weldability. It can be welded using various welding techniques, including tungsten inert gas welding, electron beam welding, and laser welding. This makes TA5 highly suitable for connecting components in critical applications where stringent requirements for weld strength and integrity are imposed.
7. Applications of TA5 Titanium Alloy
TA5 titanium alloy is primarily used in industries requiring high strength, excellent corrosion resistance, and good weldability. Its applications are wide-ranging, including:
Aerospace industry: engine components, fuselages and other structural elements of aircraft and spacecraft.
Chemical equipment: Tanks, pipelines, and reactors that need to withstand corrosive chemical environments.
8.Key Differences Between TA5 Titanium and TC4
Mechanical strength: TA5 has higher tensile and yield strength than TC4, making it more suitable for high-stress applications.
Density: TA5 has a slightly higher density than TC4, but the difference is not significant.
Corrosion resistance: TA5 has better corrosion resistance than TC4, making it more suitable for high-corrosion environments such as marine and chemical industries.
9.Processing Challenges of TA5 Titanium Alloy
TA5 titanium alloy presents some challenges during the processing, requiring special considerations and technology to overcome:
Poor machinability: TA5 titanium alloy is difficult to machine, and specific process measures and technical methods need to be implemented during production.
Susceptibility to impurity absorption: TA5 titanium alloy readily absorbs impurities such as hydrogen, oxygen, nitrogen, and carbon during hot working, which can adversely affect its properties. Process parameters and environmental conditions must be carefully controlled to minimize impurity absorption.
Limited wear resistance: The wear resistance of TA5 titanium alloy is relatively low. In specific applications, additional measures such as surface treatment, coatings, etc., may be required to enhance its wear resistance.
Complex Production Process: The unique properties and challenges of TA5 titanium alloy determine the complexity of its production process. To ensure the quality and performance of the final product, the production process requires multiple steps such as melting, casting, heat treatment, and precision machining.
Processing Methods for TA5 Titanium alloy plate
1.Melting
Using high-purity sponge titanium (oxygen content ≤500ppm) as the main raw material, add intermediate alloy powders such as aluminum and vanadium according to the requirements of the alloy composition.
The raw materials need to be crushed, sieved, and dried to remove surface oxides and volatiles. The mixed raw materials are then pressed into cylindrical electrode blanks (density ≥ 3.5g/cm³) by a hydraulic press and welded into consumable electrodes. The welding process must be completed under inert gas protection (such as argon) to avoid oxidation, followed by vacuum melting.
Primary Melting: Performed in a vacuum arc furnace, with a current of 30–50kA, vacuum degree ≤0.1Pa, forming the initial billet blank.
Secondary Melting: Remelting the initial blank to eliminate composition segregation and porosity defects, achieving a density of ≥99.8%.
Cap sealing treatment: Gradually reduce the current at the end of melting to reduce the "V" shaped shrinkage in the ingot head, and control the cutting rate ≤8%.
2.Casting
The raw materials (sponge titanium + aluminum-vanadium master alloy) are melted in a vacuum consumable arc furnace (VAR) through two remelting cycles at a vacuum of 0.1 Pa, resulting in a dense ingot (shrinkage porosity ≤ 8%). The ingot is then stripped and ultrasonically inspected to ensure internal defects are ≤ Φ2 mm equivalent. A zirconia-based ceramic shell with high refractoriness (≥1800°C) and low gas adsorption is used to prevent high-temperature oxidation of the titanium alloy. The TA5 ingot is then remelted and poured into a preheated shell (800–1000°C). The complex mold cavity is filled by centrifugation or gravity, with a cooling rate controlled at 5–10°C/s to minimize thermal cracking. Finally, the shell is sandblasted to remove residual mold material, followed by pickling (HNO3 + HF mixture) to remove the oxide layer, and finally annealing (700–750°C/2h) to eliminate residual stresses.
3.Heat Treatment
Destress annealing
Heat to 600–650°C (below α-β phase change temperature), keep warm for 1–2 hours, force air cooling, eliminate residual stress in processing, and reduce hardness by about HB2.
Completely annealed
Double-stage insulation: 750°C (α single-phase area) for 4 hours to dissolve the β phase, 920°C (β phase area) for 2 hours to homogenize the tissue.
Rapid cooling: Water cooling (50°C/s) inhibits brittle phase precipitation and improves fracture toughness.
Timeliness enhancement (optional).
After 1.5 hours of insulation at 990°C, the aging at 200°C was 36 hours, and the yield strength was increased by 180MPa by Ti-3Al precipitation.
Argon protection (oxygen partial pressure ≤ 250ppm), ultrasonic detection (defect ≤ Φ2mm), tensile strength ≥ 800MPa.
Process advantages: The oxygen content is ≤0.15%, and the grain size is uniform (within 15μm), which meets the high-end needs of ship pressure-resistant shells.
4.Precision Machining
rough machining
Cemented carbide tools (rake angle 0°–3°), low-speed milling/turning to remove the allowance, and the cutting fluid is controlled by emulsion (concentration 5%).
The polycrystalline diamond tool (rake angle 8°–15°) was replaced with a high-pressure cooling system (pressure ≥ 10MPa), and the surface roughness could reach Ra0.4μm.
Laser cutting or EDM (pulse width ≤50 μs) processes complex contours without mechanical stress causing deformation.
Detection and post-processing
Coordinate measuring instrument (accuracy ±0.005mm) verifies the dimensions, and pickling passivation (HNO3=3:1) improves corrosion resistance.
Process advantages: Dimensional error ≤ 0.02mm, no heat-affected zone, suitable for high-precision components such as ship pressure-resistant shells.
why choose Us?
Baoji Mingjie Titanium Material Technology Co., Ltd. is a comprehensive enterprise integrating metal material processing, production, sales and development, focusing on the manufacture of titanium and titanium alloy products, mainly producing titanium and titanium alloy plates, rods, wires, cakes, rings, titanium craft products, standard parts and titanium surgical implants, as well as the processing and sales of other ferrous metals and rare metals. Our products are widely used in chemical, aviation, aerospace, ships, biomedical and other fields. As a member of the Baoji titanium industry cluster, the company relies on the complete local industrial chain (titanium sponge - titanium ingot - titanium processing materials - titanium deep processing products) to have large-scale production capacity. Baoji City's titanium output in 2024 will reach 75,000 tons, with a total output value of about 56 billion yuan, a year-on-year increase of 10%, and the company, as one of them, will benefit from the regional industrial agglomeration effect.
The company takes "product quality first" as its business philosophy and has established a strict quality management system. Baoji titanium industry as a whole has passed international certifications such as ISO 9001 and AS/EN9100 aerospace quality system, reflecting the standardization level of local enterprises. Baoji titanium companies generally use advanced processes such as electron beam cold bed melting (EBCHM) to improve material purity and yield, and the company may share such technical resources : As an enterprise integrating production and sales, the company directly participates in raw material processing and reduces intermediate costs. The scale effect of Baoji titanium industrial cluster further reduces production costs.
The company is a "source production plant and sales integration" enterprise, directly docking the needs of downstream customers and providing customized services.
FAQ
Q: Are you a middleman or a source processing factory?
We are a manufacturer specializing in the processing and production of titanium materials, with major advantages of high quality and low price. If you are interested in titanium and titanium alloy products, you can contact us. We will serve you with the best products and prices. Our company website is www.major-ti.com.
Q:How do I know I'm getting the right alloy (e.g., real Grade 5)?
We guarantee 100% material authenticity. Our MTC provides complete chemical composition analysis to ensure you receive exactly what you ordered.
Q:Your price is good, but how can I trust the quality?
We are an ISO 9001-certified factory, not a trader. Every order includes a complete MTC (Merchandise Inspection Certificate), and we welcome third-party inspections to ensure quality.
Q: How long does shipping take?
For urgent needs, our express air freight service typically takes only 5-10 days. We ensure your project proceeds as planned.
Q: What is your MOQ for a custom or small test order?
Our minimum order quantity is generally based on the number of products. We also offer competitive factory direct prices, which are quoted based on quantity.
Q:What is the process for a custom order, from drawing to delivery?
.Our process is simple and efficient. 1. Submit your technical drawings. 2. We provide competitive factory direct quotes. 3. After confirmation, we begin production. 4. We arrange for fast global doorstep delivery.
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