SS321 AISI 321 Stainless Steel Properties, TP321 321H Composition
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Family: Stainless Steel
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Hardness (Rockwell) |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cr | 9.0-12.0 |
| Ni | 0.10 |
| Notes | Stainless Steel Pipes |
| C, ≤ | 1.00 |
| N, ≤ | ≥ Ti 4x(C+N), ≤ 0.70 |
| P, ≤ | 0.03 |
| S, ≤ | 17.0-19.0 |
| Mn, ≤ | 0.045 |
| Si, ≤ | 2.00 |
| ASTM Type | TP321H (UNS S32109) |
| Other Elements | ≥ Ti 5×(C+N), ≤ 0.70 |
| AISI Type (UNS) | TP321 |
| Grade (Steel Number) | X6CrNiTi18-10 (1.4541) |
| ISO Name (ISO Number) | X6CrNiTi18-10 |
Where to Buy SS321 AISI 321 Stainless Steel Properties, TP321 321H Composition
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Description
AISI 321 stainless steel (SS321) is basically type 304 with the addition of titanium (Ti), which stabilizes carbides against sensitization to prevent intergranular precipitation of chromium carbide when the steel is heated to a temperature within the sensitization range (such as during welding). 321H is to obtain the best creep strength and creep rupture strength. TP321 stainless steel is for seamless, welded, and heavily cold worked pipes. The following tables and lists give grade 321 stainless steel datasheet and specification including chemical composition, physical properties and mechanical properties, machinability, heat treatment, welding, etc. SS 321 stainless steel chemical composition is listed in the following table based on cast analysis.