GR9 titanium alloy rod TA18 titanium rod high strength ta18 pure
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Basic characteristics of TA18 titanium alloy
TA18 titanium alloy is mainly composed of titanium, aluminum, iron
and other elements. Its typical composition is: titanium (Ti) about
88.5-92.5%, aluminum (Al) about 6.0-7.5%, iron (Fe) about 0.3-0.5%.
The "TA" in its name stands for titanium-aluminum alloy, and the
number "18" refers to the aluminum content of the alloy of about
18%. This alloy belongs to the α-β type titanium alloy, with a
dual-phase structure of α phase and β phase, which has excellent
performance in mechanical properties, corrosion resistance and high
temperature resistance.
TA18 titanium alloy has high strength and good plasticity, and can
maintain good mechanical properties under normal temperature and
high temperature conditions. Especially at high temperatures, the
oxidation resistance and corrosion resistance of the alloy make it
an ideal high-temperature structural material. The density of TA18
alloy is low, about 4.4g/cm³, which is lighter than aluminum alloy
and steel, so it has important advantages in engineering projects
requiring lightweight.
The main chemical components of TA18 titanium alloy include
titanium (Ti), aluminum (Al), vanadium (V) and iron (Fe).
Specifically, the typical chemical composition of TA18 titanium
alloy is as follows:
Titanium (Ti): matrix component, content between 89% and 90%
Aluminum (Al): 5.5% to 6.5%
Vanadium(V): 3.5% to 4.5%
Iron (Fe): ≤ 0.3%
Oxygen (O): ≤ 0.15%
Nitrogen (N): ≤ 0.05%
Hydrogen (H): ≤ 0.015%
Carbon (C): ≤ 0.08%
| Ti | Al | V | Fe | O | N | H | C |
| 89% and 90% | 5.5% to 6.5% | 3.5% to 4.5% | ≤ 0.3% | ≤ 0.15% | ≤ 0.05% | ≤ 0.015% | ≤ 0.08% |
The contents of these components have a significant impact on the
properties of TA18 titanium alloy. For example, an increase in
oxygen content will increase the strength of the alloy, but reduce
its plasticity; excess hydrogen will lead to hydrogen
embrittlement, making the alloy brittle.
Effect of ingredients on performance
The composition of TA18 titanium alloy has an important impact on
its mechanical properties and corrosion resistance. Through
appropriate heat treatment, such as solution treatment, aging
treatment and quenching treatment, its performance can be
significantly improved. Solution treatment is usually carried out
in the temperature range of 900℃ to 950℃. It maintains the uniform
structure of the alloy through rapid cooling, thereby improving
strength and maintaining good plasticity and toughness.
Aging treatment is carried out in the temperature range of 500℃ to
600℃ to stabilize and strengthen the structure of the alloy and
improve creep resistance and fatigue strength
Quenching treatment uses water quenching or oil quenching to
improve the hardness and wear resistance of the alloy
Main application areas of TA18 titanium alloy
Aerospace field
In the aerospace field, TA18 titanium alloy is often used as a key
material for aircraft engines, aircraft structural components and
spacecraft due to its high strength, low density and excellent high
temperature resistance. Its good corrosion resistance is
particularly suitable for environments exposed to high temperatures
and strong aerodynamic forces. For example, in the turbine blades
and high-temperature structural parts of aircraft engines, TA18
alloy can provide sufficient strength and durability to ensure the
stable operation of components under extreme conditions.
Chemical and marine engineering
Due to the excellent corrosion resistance of TA18 titanium alloy in
strong acid, strong alkali and seawater environments, the alloy has
been widely used in chemical equipment, offshore platforms and
marine engineering. For example, TA18 titanium alloy materials are
often used in seawater desalination equipment, petrochemical
equipment and deep-sea oil and gas production to make core
components such as pipes, containers, and heat exchangers. These
applications require that the material not only has excellent
corrosion resistance, but also has good mechanical strength and
toughness, and TA18 alloy just meets these requirements.
Medical devices
TA18 titanium alloy is also gradually showing its unique advantages
in the field of medical devices. Titanium alloy is widely used in
medical devices such as artificial joints and dental implants due
to its good biocompatibility. In this application, TA18 alloy can
not only provide sufficient strength support, but also has good
wear resistance and corrosion resistance, which helps to improve
the service life of implants and patient comfort.
