Titanium materials are widely used in Industry. They exhibit exceptional resistance to chloride ion corrosion. Common titanium grades used in chemical equipment include TA1, TA2, TA3, TA9, and TA10.
Faced with a variety of titanium grades, what are their differences? How should we make the right choice? This article will break down each titanium grade in detail.
TA1
Core Features: Among commercial pure titanium grades, it has the lowest content of impurity elements such as carbon, hydrogen, and oxygen, thus offering the best ductility, toughness, and cold forming ability, but relatively the lowest strength.
Application Scenarios: Cladding layer of titanium-steel explosive clad plates; transition layer of zirconium-titanium-steel clad plates.
TA2
The Golden Balance of Strength and Corrosion ResistanceCore Features: The most commonly used commercial pure titanium grade with the most balanced overall performance. It achieves a perfect balance of strength, ductility, and corrosion resistance, known as "standard pure titanium".
Application Scenarios: Vessel shells, nozzles, flanges, etc.
TA3
Core Features: It has higher contents of impurity elements (carbon, hydrogen, oxygen) than TA2, resulting in higher strength but slightly inferior ductility and corrosion resistance.
Application Scenarios: Agitator shafts of reactors.
TA9
Ultimate Defense for Harsh Working ConditionsCore Features: A titanium-palladium alloy, developed by adding palladium to TA2. This trace addition of a "precious metal" brings a qualitative leap in its corrosion resistance, especially in reducing media and resistance to crevice corrosion.
Application Scenarios: Occasions with dead zones or gaps prone to crevice corrosion.Frequently used as backing rings for flange sealing surfaces, forming a "golden combination" with TA2.
TA10
Core Features: A titanium-nickel-molybdenum alloy, developed by adding nickel and molybdenum to TA2, offering higher strength.
Application Scenarios: Commonly used in erosion corrosion resistant occasions.Widely applied in evaporation crystallization projects, such as heat exchanger tubes and cladding materials for tube sheets when the medium contains chloride ion salts like calcium chloride and sodium chloride.
With its feature, titanium valves have become the preferred choice for severe operating conditions in chemical, marine, aerospace and other industries. Although the initial cost is higher, their life-cycle cost-effectiveness is significant.
