321 Stainless Steel Tubing
321 stainless steel tubing is a high-performance, austenitic stainless steel known for its excellent resistance to corrosion and oxidation, particularly in high-temperature environments. What sets 321 stainless steel apart from other types is the addition of titanium, which improves its resistance to carbide precipitation during welding and enhances its overall durability.
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321 stainless steel tubing is a high-performance, austenitic stainless steel known for its excellent resistance to corrosion and oxidation, particularly in high-temperature environments. What sets 321 stainless steel apart from other types is the addition of titanium, which improves its resistance to carbide precipitation during welding and enhances its overall durability. Due to its impressive properties, 321 stainless steel tubing is widely used in industries that require both strength and stability under extreme conditions.
Chemical Composition and Properties
The chemical composition of 321 stainless steel tubing includes the following key elements:
Chromium (Cr): 17.0–19.0%
Nickel (Ni): 9.0–12.0%
Titanium (Ti): 5x (C+N)–0.7%
Carbon (C): 0.08% max
Manganese (Mn): 2.0% max
Silicon (Si): 0.75% max
Phosphorus (P): 0.045% max
Sulfur (S): 0.03% max
Key Mechanical Properties
The mechanical properties of 321 stainless steel tubing include:
Tensile Strength: Approximately 515 MPa (75,000 psi)
Yield Strength: Approximately 205 MPa (30,000 psi)
Elongation: Around 40% in 50 mm
Hardness: Typically 95 HRB, which supports ease of fabrication and machining.
The material's strength and ductility make it suitable for a range of demanding environments, where both durability and flexibility are required.
Conclusion
321 stainless steel tubing is an exceptional material designed for industries and applications that demand high performance in challenging conditions. With its superior corrosion resistance, high-temperature stability, and excellent weldability, 321 stainless tubing is a reliable choice for sectors such as aerospace, chemical processing, petrochemicals, and more. Whether used in high-heat automotive systems or critical chemical processing units, this tubing ensures reliability and long-lasting performance. Explore our selection of 321 stainless steel tubing and find the perfect solution for your project needs.
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