Harshita Stainless, a reputable manufacturer and supplier based in Delhi, India, specializes in high-quality Stainless Steel 321 Tubing tailored for demanding applications. Renowned for its outstanding resistance to oxidation and corrosion, particularly in high-temperature settings, 321 tubing is a titanium-stabilized austenitic stainless steel that offers remarkable durability and strength. At Harshita Stainless, we ensure our 321 tubing adheres to international quality standards, making it perfect for sectors like aerospace, chemical processing, and power generation. With precise dimensions, a superior surface finish, and excellent mechanical properties, our 321 tubing guarantees long-lasting performance even under extreme thermal and mechanical stress.
Stainless Steel 321 Tubing is mainly made up of chromium (17–19%), nickel (9–12%), and titanium (at least five times the carbon content), which stabilizes the alloy and helps prevent carbide precipitation. It boasts good tensile strength (around 75 ksi) and impressive creep resistance, making it suitable for extended exposure to high temperatures up to 870°C. The alloy also maintains excellent ductility and toughness, even in cryogenic conditions. The addition of titanium enhances its resistance to intergranular corrosion, especially after welding, ensuring durability and structural integrity in challenging 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.
Stainless Steel 321 Tubing finds extensive use in industries that demand high-temperature strength and corrosion resistance. It’s perfect for aerospace engine components, exhaust systems, thermal oxidizers, heat exchangers, and high-temperature chemical processing equipment. Its stability under thermal stress makes it an excellent choice for furnace parts and expansion joints. In the petrochemical and power generation industries, 321 tubing is utilized in steam lines and superheaters. Additionally, it’s well-suited for marine and automotive applications where exposure to harsh conditions is a factor.
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