Titanium material has excellent performance, how to choose TA1, TA2, TA3, TA9, TA10?
Titanium materials are widely used in chemical plants such as chlor-alkali plants, paper mills, evaporation crystallizers, and PTA plants. Their excellent resistance to chloride ion corrosion makes them an ideal material for manufacturing chemical equipment. Common titanium grades include TA1, TA2, TA3, TA9, and TA10.
Faced with these diverse types of titanium materials, what are the differences between them? And how should we make a choice? This article will analyze the characteristics of these titanium materials one by one.
Furthermore, we can view the commonly used TA2, TA9, and TA10 as a "pyramid" structure with progressively increasing performance and cost.
TA1
Key characteristics: As industrially pure titanium, TA1 has the lowest possible levels of impurity elements C, H, and O, giving it excellent plasticity, toughness, and cold forming ability. However, its strength is relatively lower compared to other grades.
Application areas: TA1 is mainly used for the coating of titanium steel explosion-proof composite plates and the transition layer of zirconium titanium steel composite plates.
TA2
The golden balance between strength and corrosion resistance
Key characteristics: TA2 is the most commonly used and best-balanced grade of industrial pure titanium. It achieves a near-perfect balance in strength, ductility, and corrosion resistance, and is therefore hailed by the industry as the "standard pure titanium".
Application areas: TA2 is widely used in the manufacture of components such as container shells, nozzles, and flanges.
TA3
Key characteristics: The content of impurity elements C, H, and O in TA3 is increased compared to TA2, which makes it stronger. However, this change also results in relatively poorer plasticity and corrosion resistance.
Application area: Manufacturing of stirring shafts for reactors.
TA9
The ultimate defense against harsh working conditions
Key characteristics: TA9 is a titanium-palladium alloy based on TA2 with trace amounts of palladium. The addition of this "noble metal" significantly improves TA9's corrosion resistance, especially in reducing media and crevice corrosion.
Application areas: Suitable for applications with dead zones, gaps, and susceptibility to surface corrosion. TA9 is often used as a flange sealing ring, and when used in conjunction with TA2, they are considered a "golden combination".
TA10
Key characteristics: TA10 is a titanium-nickel-molybdenum alloy, which adds nickel and molybdenum elements to TA2, thus having higher strength.
Application areas: Commonly used in applications requiring resistance to erosion and corrosion. It is widely used in evaporation and crystallization projects, for example, when the heat exchanger medium is a chloride salt such as calcium chloride or sodium chloride, TA10 can be used as a cladding material for heat exchange tubes and tube sheets.
