Lecong Stainless is a reputable manufacturer and supplier based in Da Nang, Vietnam, known for its high-quality Stainless Steel 321 Tubing, which is perfect for high-temperature and corrosive settings. This titanium-stabilized grade is designed to resist intergranular corrosion, making it a great choice for extended exposure to elevated temperatures. With its impressive durability, toughness, and weldability, Stainless Steel 321 Tubing is a go-to option in industries where heat resistance and structural integrity are crucial. Lecong Stainless is committed to upholding international quality standards, providing precision finishing, and offering cost-effective solutions, making these tubes a trusted choice for clients both in Vietnam and around the world.
Stainless Steel 321 Tubing consists of 17–19% chromium and 9–12% nickel, with titanium added to prevent carbide precipitation during welding and high-temperature use. It also has controlled amounts of carbon, manganese, and silicon to enhance strength and workability. The tubing boasts a tensile strength of about 515 MPa, a yield strength of around 205 MPa, and an elongation of 40%. With excellent oxidation resistance up to 1500°F (816°C) and strong creep resistance, Stainless Steel 321 Tubing is incredibly reliable for applications that require long-term performance in heat and corrosive environments.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
321 |
min.
max |
–
0.08 |
2.00 |
0.75 |
0.045 |
0.030 |
17.0
19.0 |
– |
9.0
12.0 |
0.10 |
Ti=5(C+N)
0.70 |
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
|---|---|---|---|---|---|
|
Rockwell B (HR B) max |
Brinell (HB) max |
||||
|
321 |
515 |
205 |
40 |
95 |
217 |
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We provides highest quality standards for Stainless Steel 321 Tubing through processes of testing and certification. The products are checked with advanced tests for durability, corrosion resistance, and dimensional accuracy. Our tubing is certified internationally according to standards such as ASTM and ISO for reliability, performance, and the specific requirements of the industry.
Stainless Steel 321 seamless tubing resists oxidation and corrosion at high temperatures, offering excellent stability and durability. It’s ideal for aerospace, chemical, and high-temperature applications due to its strength and resistance.
Stainless Steel 321 welded tubing provides excellent resistance to high temperatures and corrosion, ideal for aerospace and chemical applications. It offers good weldability and stability, ensuring durability in demanding environments.
Stainless Steel 321 heat exchanger tubes offer superior resistance to high temperatures and corrosion, making them ideal for heat exchange applications in aggressive environments. They ensure durability and efficient thermal performance.
Stainless Steel 321 instrumentation tubing provides excellent resistance to high temperatures and corrosion, ensuring reliable performance in precise measurement and control systems. Its stability and strength make it ideal for critical applications.
Stainless Steel 321 boiler tubes offer high resistance to oxidation and corrosion at elevated temperatures, making them ideal for boiler systems. Their durability and strength ensure efficient heat transfer and long service life.
Stainless Steel 321 U-tubes provide excellent high-temperature resistance and corrosion protection, making them ideal for heat exchangers and condensers. Their durability and flexibility ensure reliable performance in challenging environments.
This tubing finds extensive use in various industries, including aerospace, petrochemicals, chemical processing, marine, and power generation. It’s perfect for heat exchangers, furnace components, superheaters, pressure piping, and exhaust systems. In the aircraft and automotive sectors, this tubing stands up well under cyclic thermal conditions. Its resistance to intergranular corrosion also makes it suitable for refinery equipment, boiler tubes, and flue gas systems. Thanks to its ability to maintain strength and integrity in high-temperature and corrosive conditions, Stainless Steel 321 Tubing is a top choice for critical engineering and industrial applications.















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