309S Stainless Steel
UNS S30908
Type 309S Stainless Steel is known for its resistance to oxidation possesses better creep strength than Type 304/304L. Type 309S is commonly used in high temperature situations, including furnaces, kilns, boilers, and fire boxes. Type 309S is also used in the chemical industry.
| ASME Boiler and Pressure Vessel Specifications | |||||||
| Sheet/ Plate | Forgings | Weld Fittings | Rod and Bar | Tubing - Welded/ Smls | Pipe - Welded/ Smls | Bolting- Bolts/ Nuts | Filler Metals |
| SA240 | SA182 | SA403 | SA479 | SA249/ SA213 | SA312/ SA312 | SA193-B8/ SA194-Gr8 | ER309L |
| ASME Boiler and Pressure Vessel Chemical Requirements for Sheet/Plate | |||||||
| Note: all percentages max unless otherwise specified | |||||||
| C | Mn | P | S | Si | Ni | Cr | Mo |
| 0.08 | 2.00 | 0.045 | 0.03 | 0.75 | 22.00-24.00 | 12.00-15.00 | --- |
| ASME Boiler and Pressure Vessel Mechanical Properties for Sheet/Plate | |||
| Tensile Strength, Min ksi | Yield Strength, (0.2% offset), Min, ksi | Min. Elongation in 2", % | Density lb/in³ |
| 75 | 30 | 40.0 | 0.289 |
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