AISI 321 Stainless Steel Round Pipe
Leave a message
If you are looking for AISI 321 stainless steel round tubing, GNEE offers high-quality seamless and welded steel tubing conforming to ASTM A312/ASME SA312, EN 10216-5, and JIS standards.
We are a supplier of 321 stainless steel pipes and tubes. We provide various types of products including: UNS S32100, 1.4541, 321 stainless steel exhaust tubing, AISI 321 stainless steel alloy tubes, 321 stainless steel seamless pipes, welded pipes, round tubes, square tubes, rectangular tubes, capillary tubes, coiled tubes, and ERW pipes with high quality. Our 321 stainless steel tubing is available in a full range of specifications, with diameters ranging from 6mm to 325mm, wall thicknesses from 0.5mm to 20mm, and lengths up to 12m. Precision cutting, polishing, and bending services are available upon request.

AISI 321 Stainless Steel round Pipe in stock
| Standard |
ASTM A213, ASTM A240, ASTM A312 |
|---|---|
| Grade |
0Cr18Ni10Ti, 1.4541, 1Cr18Ni11Ti, SUS321, X6CrNiTi18-10 |
| Length |
6 m (20 ft) and 12 m (40 ft), Customized |
| OD |
6 mm (0.24 in) to 406.4 mm (16 in), Customized |
| WT |
0.7 mm (0.028 in) to 12.7 mm (0.5 in), Customized |
| Surface Finish |
BA, Customized, NO. 4, Passivation, Pickling, Polishing |
| Form |
Coiled Tube, Customized, Rectangular Tube, Round Tube, Seamless Pipe, Square Tube, Welded Pipe |
Chemical Compositions
| Element | C | Si | Mn | P | S | Cr | Ni | Ti | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Composition (%) | 0.08 max | 0.75 max | 2.00 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 9.00 – 12.00 | 5 * (C + N) min, 0.70 max | 0.10 max | Balance |
Mechanical Properties
| Mechanical Property | Value (Metric) | Value (Imperial) |
|---|---|---|
| Tensile Strength | 515 – 720 MPa | 74,700 – 104,400 psi |
| Yield Strength | 205 MPa | 29,700 psi |
| Brinell Hardness (HB) | 160 – 220 | 160 – 220 |
| Rockwell Hardness (HRC) | 15 – 24 | 15 – 24 |
| Vickers Hardness (HV) | 160 – 220 | 160 – 220 |
| Elongation | 40% min | 40% min |
| Elastic Modulus | 193 – 200 GPa | 28.0 – 29.0 x 10^6 psi |
All steel pipes are ISO 9001, SGS, and BV certified and come with factory test certificates (MTC 3.1/3.2). We also offer free samples for testing and verification before your purchase.

With fast delivery, highly competitive factory-direct prices, and customized packaging, GNEE provides a reliable supply of steel pipes for heat exchangers, boilers, chemical, and high-temperature industrial applications.

If you have any project requirements for ASTM 321 stainless steel pipes, please click the button below to contact us immediately. We are happy to assist you.







