Products Description
Incoloy 800h 825pipe
Our Advantages
- Incoloy 825: Offers excellent resistance to stress corrosion cracking caused by reducing and oxidizing acids (sulfuric, phosphoric, and nitric acids), as well as chlorides, minimizing pipe failures, leaks, and unplanned downtime in heat exchanger systems.
- Incoloy 800H: Delivers high-temperature strength and stability, withstanding thermal cycling without significant deformation or cracking, making it ideal for use in boiler feedwater heaters and petrochemical heat exchangers.
- Corrosion Resistance: Our Incoloy 800H 825 pipe offers excellent resistance to pitting and crevice corrosion, making it ideal for marine and offshore heat exchanger systems exposed to seawater or brackish water.
application areas
- Condensers and heat exchangers: particularly when resistance to chloride stress corrosion cracking is required.
- Petrochemical processing: Piping systems in hydrocarbon processing, ethylene production, and heat treatment equipment
- Nuclear power industry: Steam generator piping and heat exchanger piping
- Marine and offshore: Seawater-cooled heat exchangers and process piping
- Power generation: Superheater tubes, reheater tubes, and boiler tubing
- Chemical processing: Equipment handling sulfuric acid, phosphoric acid, and nitric acid
Chemical Composition
| Element | Nickel | Chromium | Iron | Molybdenum | Copper | Titanium | Carbon | Alumninum | Manganese | Salicon |
| Incoloy 800H | 30.0–35.0 | 19.0–23.0 | Balance | – | – | 0.15–0.60 | 0.05–0.10 | 0.15–0.60 | – | – |
| Incoloy 825 | 38.0–46.0 | 19.5–23.5 | Balance | 2.5–3.5 | 1.5–3.0 | 0.6 max | 0.05 max | 0.2 max | 1.0 max | 0.5 max |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (%) |
| Incoloy 800H | 450 (min) | 170 (min) | 30 (min) |
| Incoloy 825 | 550 (min) | 220 (min) | 30 (min) |
Possible Alternative Grades
- Incoloy 800/800HT: Suitable for applications requiring similar oxidation and carburization resistance but with slightly different temperature strength requirements.
- Inconel 600/625: Better suited for extremely high temperatures or more corrosive oxidizing environments; Inconel 625 offers excellent seawater and acid resistance.
- Hastelloy C22/C276: Suitable for highly reducing or mixed acid environments requiring maximum corrosion resistance.
- Stainless Steel 904L/254 SMO: A good alternative for chloride-rich environments when budget is a key factor, it offers strong resistance to pitting corrosion.
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