ASTM A213 TP321（1.4541） Seamless Cold Drawn Exchanger Tube

ASTM A213 TP321(1.4541) Seamless Cold Drawn Exchanger Tube

TP321 (often referred to simply as 321 or 1.4541 according to the European EN standard) is a grade of austenitic stainless steel. Its defining characteristic is the addition of Titanium (Ti), which makes it "stabilized" and highly resistant to a specific type of corrosion called sensitization.

It is a critical material in power generation, aerospace, and chemical industries, filling the gap between low-cost TP304 and high-temperature TP347. Its performance is directly tied to its titanium content and strict adherence to standard chemical/compositional controls, making it a reliable choice for harsh service conditions.

ASTM A213 TP321 Seamless Cold Drawn Exchanger Tube is a high-performance, precision-engineered tubular product designed specifically for use in high-temperature and corrosive environments, most commonly in heat exchangers, superheaters, and boilers.

Chemical Composition

Mechanical Properties

Equivalent Material of TP321

TP321vs. TP304 and 321H

TP321 vs. TP304: 304 is more cost-effective and general-purpose but is not recommended for applications within the sensitization temperature range(450°C to 850°C) or where welded assemblies will face corrosive conditions. TP321 offers superior resistance due to its titanium stabilization.

TP321 vs. TP321H: TP321H is the high-carbon (C: 0.04-0.10%) version of TP321. The "H" denotes high-temperature service. It guarantees higher elevated temperature strength while maintaining resistance to intergranular corrosion. It is the specified material for ASME-code high-temperature pressure components. Standard TP321 prioritizes corrosion resistance.

Application of ASTM A213 TP321(1.4541) Seamless Cold Drawn Exchanger Tube

1. Power industry: Superheater and reheater tubes of power plant boilers (capable of coping with steam temperatures exceeding 600℃);

2. Petrochemical and chemical industries: Cracking furnace tubes and heat exchanger tubes (used to handle high-temperature corrosive process fluids);

3. Heat exchange equipment field: Various high-temperature heat exchangers and condensers (especially suitable for working conditions with the risk of intergranular corrosion);

4. Others: Key components of high-temperature pressure-bearing equipment (such as high-temperature pressure vessels, etc.).