304H Stainless Steel
UNS S30409
Type 304H Stainless Steel is a more specialized purpose grade. Used primarily for its higher allowable stress value than Type 304/304L. Type 304H is commonly used in elevated temperature chemical applications
| 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 | ER308H |
| 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 |
| 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 | 8.00-10.50 | 18.00-20.00 | --- |
| 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 | 0.285 |
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