SS321
SS321 is a titanium-stabilized austenitic stainless steel based on the 18-8 Cr-Ni family. Titanium ties up carbon as stable carbides, improving resistance to intergranular corrosion after exposure in the sensitization temperature range.
SS321 Grade Information
SS321 is a titanium-stabilized austenitic stainless steel based on the 18-8 Cr-Ni family. Titanium ties up carbon as stable carbides, improving resistance to intergranular corrosion after exposure in the sensitization temperature range.
Aerospace flat-product specification for SS321. Review the material identity, supply condition and reference properties before preparing an enquiry.
| Material specification | AMS 5510 |
|---|---|
| Material identification | S32100 |
| Product / supply condition | Solution heat treated; verify thickness, finish and ordered revision. |
SS321 Chemical Composition
Manufacturer typical composition, mass %; selected elements only.
| Element / description | Mass % / reference value |
|---|---|
| C | 0.04 |
| Cr | 17.3 |
| Ni | 9.1 |
| Mo | — |
| Other | Ti stabilized |
SS321 Mechanical Properties
Published reference values for the stated form and condition. Typical values are not specification acceptance limits.
| Product form / condition | Tensile (MPa) | 0.2% proof / yield (MPa) | Elongation (%) | Data basis |
|---|---|---|---|---|
| Hot-rolled plate, usually 10–20 mm, transverse; room temperature | 570 | 250 | 55 | Manufacturer typical values; elongation A5. |
Manufacturer reference data is shown for comparison. Use the selected AMS 5510 edition and certified material test results for acceptance. Confirm specimen direction, gauge length, thickness and heat treatment.
AMS 5510 Grade Reference
S32100
| Material specification | AMS 5510 |
|---|---|
| Source edition | AMS5510T |
| Product / supply condition | Solution heat treated; verify thickness, finish and ordered revision. |
| Comparison tables | View the AMS 5510 comparison tables |
| Material overview | View SS321 in Materials |
| Publisher reference | AMS 5510 publisher reference |
| Source reference | Parker Aerospace — controlled specification list (AMS forms and conditions) |
| Source reference | Outokumpu — Steel Grades, Properties and Global Standards, Tables 4, 5 and 7 |
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