Grade 9 titanium wire, commonly referred to as Ti-3Al-2.5V alloy,
is a prevalent type of titanium alloy wire material. It is composed
of an alloy with over 90% pure titanium, along with 3% aluminum and
2.5% vanadium, offering superior mechanical properties and
corrosion resistance.
This alloy exhibits commendable characteristics in various
industrial applications:
1. High Strength: Gr9 titanium alloy wire boasts high tensile
strength and yield strength, making it suitable for applications
requiring durability.
2. Lightweight: Grade 9 titanium wire is significantly lighter than
steel, being 50% less heavy, and also nearly 60% lighter than
copper, contributing to its use in weight-sensitive environments.
3. Corrosion Resistance: The Ti-3Al-2.5V alloy demonstrates
impressive resistance to oxidizing media, seawater, and the
majority of organic acids and alkalis, allowing it to withstand
harsh conditions.
4. Fatigue Resistance: Titanium alloy wire has excellent fatigue
resistance to alternating loads and vibration, which is beneficial
in applications subject to repetitive stress.
5. Machinability: Titanium wire is relatively easy to machine,
enabling the production of wires in diverse shapes and sizes for
specific purposes.
Specification details for Gr9 titanium wire include:
1. Melting Temperature: 1700~1726°C, indicating high-temperature
stability.
2. Density: 4.47g/cm³, confirming its lightweight nature.
3. Room Temperature Specific Heat Capacity: 858J/(kg*K), reflecting
its thermal properties.
4. Non-Magnetic: This quality is essential for applications where
magnetic interference could be detrimental.
5. Oxidation Resistance: The alloy's oxidation resistance allows it
to withstand temperatures up to 316°C, with surface oxidation not
exceeding 0.05mm when exposed to 800°C for one hour.
6. Corrosion Resistance: Comparable to that of industrial pure
titanium, Gr9 retains the inherent corrosion resistance benefits of
the metal.
The chemical composition of Gr9 titanium wire, as specified in ASTM
B863 standards for titanium and titanium alloy grades, is clearly
laid out in the provided table. These specifications ensure the
alloy's consistent quality and performance across various
applications.
| Chemical composition |
| Grade | N | C | H | Fe | O | Al | V | Ti | Other , max |
| 9 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5-3.5 | 2.0-3.0 | Bal | 0.4 |
Mechanical properties
| Mechanical Properties(>%) |
| Grade | Tensile Strength(min) | Yeild Strength(0.2% offset)) | Elongation(%) |
| ksi | MPa | Min |
| Ksi | Mpa |
| 9 | 90 | 620 | 70 | 483 | 15C |
Applications
The titanium Gr9 wire, also known as Ti-3Al-2.5V alloy, is
extensively utilized across diverse sectors due to its exceptional
mechanical properties and corrosion resistance.
1. Aerospace Industry: Within the aerospace sector, titanium Gr9
wire is critical for manufacturing aircraft and engine components.
Applications include engine blades, shock absorbers, connectors,
bolts, and fasteners. Its high strength, low weight, and superior
corrosion resistance make it an optimal material choice for
aviation and aerospace applications where performance and
reliability are paramount.
2. Sports Equipment Industry: The Gr9 wire is also incorporated
into the sports equipment industry, aiding in the creation of
high-end bicycles, golf clubs, tennis rackets, and other sporting
gear. The material's lightweight nature combined with its robust
strength makes it particularly suitable for enhancing the
performance of sports equipment.
3. Additional Industries: Beyond these sectors, the Ti-3Al-2.5V
alloy finds utility in various other industries such as automotive,
marine, and construction. It is employed in the production of
springs, fasteners, fittings, and more due to its unparalleled
strength and outstanding resistance to corrosion.
In summary, titanium alloy wire is an exceedingly versatile
material that is widely favored across numerous industries. Its
unique combination of high strength, lightweight characteristics,
and corrosion resilience positions it as an ideal material for use
in aerospace, sports, and numerous other industrial applications.
