Reliable Pipes & Tubes is a leading manufacturer, supplier, stockist and exporter of premium quality SS 321 Seamless Pipe manufactured according to international quality standards. Our SS 321 Seamless Pipe products are widely used across industries because of their excellent corrosion resistance, superior mechanical strength, and outstanding high-temperature performance.
SS 321 Seamless Pipe is a titanium stabilized austenitic stainless steel pipe containing chromium and nickel with the addition of titanium. Titanium stabilization prevents carbide precipitation during welding and improves resistance to intergranular corrosion at elevated temperatures.
Reliable Pipes & Tubes supplies SS 321 Seamless Pipe in various diameters, wall thicknesses, schedules, and custom lengths to meet industrial requirements. Every pipe undergoes strict quality control and testing procedures to ensure long service life and reliable performance.
SS 321 Seamless Pipe is manufactured without welded joints, offering excellent pressure handling capability, superior strength, and leak-proof performance.
| Specification | Details |
|---|---|
| Standard | ASTM A312 / ASME SA312 |
| Grade | SS 321 / UNS S32100 |
| Pipe Type | Seamless |
| Size Range | 1/2" NB to 24" NB |
| Wall Thickness | 0.3 mm to 50 mm |
| Schedule | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS |
| Length | Single Random, Double Random & Cut Length |
| End Type | Plain End, Beveled End, Threaded |
| Surface Finish | Annealed, Pickled, Bright Annealed, Polished |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 Max |
| Silicon (Si) | 1.00 Max |
| Manganese (Mn) | 2.00 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.030 Max |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Nitrogen (N) | 0.10 Max |
| Titanium (Ti) | 5(C+N) – 0.70 Max |
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1457°C |
| Tensile Strength | 515 MPa Min |
| Yield Strength | 205 MPa Min |
| Elongation | 40% Min |
| Hardness | 95 HRB Max |
| Modulus of Elasticity | 193 GPa |
SS 321 Seamless Pipe is a titanium stabilized stainless steel pipe designed for high-temperature applications.
Titanium prevents carbide precipitation during welding and improves resistance to intergranular corrosion.
Yes, SS 321 performs efficiently up to 870°C and provides excellent oxidation resistance.
Yes, SS 321 is widely used in exhaust systems, heat exchangers, and high-temperature applications.
Yes, custom dimensions and cut lengths are available according to project requirements.