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321 stainless steel pipe (UNS S32100) is a titanium-stabilized austenitic stainless steel pipe derived from 304 stainless steel, with titanium added to suppress intergranular corrosion. It excels in high-temperature resistance, corrosion resistance, and mechanical stability.
| Element | C | Si | Mn | Cr | Ni | Ti | Fe |
|---|---|---|---|---|---|---|---|
| 321 | ≤0.08 | ≤0.75 | ≤2.0 | 17.0-19.0 | 9.0-12.0 | 5×(C+N)-0.70 | Balance |
| 321H | 0.04-0.10 | ≤0.75 | ≤2.0 | 17.0-19.0 | 9.0-12.0 | 5×(C+N)-0.70 | Balance |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 321 | 520 | 205 | 40 |














Dactron Pipe