Walid Stainless is one of the top producers and distributors of high-grade stainless steel products located in Tunis, Tunisia. As an organization, this company adheres to high-quality standards with innovations and excels in producing hard-wearing, precision engineered stainless steel products catering to varied industrial requirements. Stainless Steel 321 Tubing offers resistance to corrosion and high-temperature strength. It is thus one of the most versatile types of tubing used in aggressive conditions. we assures excellent performance and reliability, hence trusted in the global stainless steel market.
Stainless Steel 321 Tubing is an austenitic stainless steel alloy containing approximately 17–19% chromium and 9–12% nickel, with titanium added for stabilization. The titanium prevents chromium carbide precipitation, enhancing resistance to intergranular corrosion, particularly after welding. The tubing typically offers tensile strength between 515–700 MPa and hardness around 170–200 HB. Its austenitic structure provides excellent toughness, corrosion resistance, and mechanical stability across a wide temperature range.
| 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 is widely used in industries where heat resistance and corrosion protection are essential. Typical applications include heat exchangers, exhaust systems, boiler tubing, petrochemical processing equipment, power generation plants, and aerospace components. Its ability to withstand thermal cycling and resist oxidation makes it ideal for welded assemblies and high-temperature service. Engineers and fabricators rely on 321 Tubing for reliable performance, extended service life, and reduced maintenance. Walid Stainless ensures each tube meets strict quality standards, supporting safe and efficient operation in demanding industrial environments.
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