300 Series · UNS S30409
An austenitic stainless steel grade (300 series), with a higher carbon floor than 304 for improved high-temperature strength.
| Element | Range (%) |
|---|---|
| Cr | 18 – 20 |
| Ni | 8 – 10.5 |
| C | 0.04 – 0.1 |
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