825 Alloy
UNS N08825
Trade Name: INCOLOY® Alloy 825
A nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion. The alloy is especially resistant to sulfuric and phosphoric acids. Used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment. Standard product forms are round, flats, forging stock, pipe, tube, plate, sheet, strip, and wire. (Information provided by Special Metals Corporation)
| 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 |
| SB424 | NA | SB366 | SB425 | SB704/ SB427-SB163 | SB705/ SB423 | SB425-825/ SB425-825 | ERNiFeCr-1 |
| ASME Boiler and Pressure Vessel Chemical Requirements for Sheet/Plate | ||||||||||
| Note: all percentages max unless otherwise specified | ||||||||||
| Ni | Cr | FeA | Mn | C | Cu | Si | S | Al | Ti | Mo |
| 38.0-46.0 | 19.5-23.5 | 22.0 (min) | 1.0 | 0.05 | 1.5-3.0 | 0.5 | 0.03 | 0.2 | 0.6-1.2 | 2.5-3.5 |
| 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 |
| 85 | 35 | 30.0 | 0.294 |
Notes:
A - Element shall be determined arithmetically by difference
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