309 Stainless Steel
Products Offered in 309 stainless steel:
We also offer safety grating, hex metal, FRP grating and custom fabrication of all of our products.
Principal Design Features: This alloy, 309 Stainless Steel, is known for good strength and oxidation resistance in continuous service temperatures up to 2000 F (1093 C). It is superior to 304 stainless in both strength and corrosion resistance.
Applications: Oven linings, boiler baffles, fire box sheets, furnace components and other high temperature containers.
Machinability: This alloy machines similarly to type 304 stainless. Its chips are stringy and it will work harden rapidly. It is necessary to keep the tool cutting at all times and use chip breakers.
Welding: Most of the austenitic stainless steels can be readily welded using fusion or resistance methods. Oxyacetylene welding is not recommended. Filler metal should be AWS E/ER 309 or 309L.
309 Chemistry Data
| Carbon | 0.2 max |
| Chromium | 22 - 24 |
| Iron | Balance |
| Manganese | 2 max |
| Nickel | 12 - 15 |
| Phosphorus | 0.045 max |
| Silicon | 1 max |
| Sulphur | 0.03 max |
309 Physical Data
| Density (lb / cu. in.) | 0.287 |
| Specific Gravity | 7.9 |
| Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) | 0.12 |
| Electrical Resistivity (microhm-cm (at 68 Deg F)) | 468 |
| Melting Point (Deg F) | 2650 |
| Modulus of Elasticity Tension | 29 |
Disclaimer
This information is provided “as is” and MSS makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. MSS specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose.
In no event shall MSS be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein.
This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.