Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
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High strength Incoloy800H steel plate N08810 rod, polished rod, chlorine gas corrosion resistant.
Incoloy 800H is a nickel-based high-temperature alloy with good high-temperature strength, oxidation resistance and corrosion resistance. It is widely used in chemical, petrochemical, energy and nuclear energy industries. Its chemical composition is mainly based on nickel, iron and chromium, and also contains a small amount of molybdenum, copper, silicon and other elements. This alloy is usually used in high temperature environments and corrosive media, especially those applications that require good high temperature stability and oxidation resistance.
| alloy | % | Ni | Cr | Fe | C | Mn | Si | Cu | S | Al | Ti |
| 800 | Minimum | 30 | 19 | - | - | - | - | - | - | 0.15 | 0.15 |
| maximum | 35 | 23 | margin | 0.10 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 | - |
| 800H | Minimum | 30 | 19 | - | 0.05 | - | - | - | - | 0.15 | 0.15 |
| maximum | 35 | 23 | margin | 0.10 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 | - |
| 800HT | Minimum | 30 | 19 | - | 0.06 | - | - | - | - | 0.15 | 0.15 |
| maximum | 35 | 23 | margin | 2 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 | - |
| Al+Ti 0.85-1.20 | - | - | - | - | - | - | - | - | - | - | - |
| density | 8.0 g/cm3 |
| Melting point | 1350-1400 ℃ |
| alloy | tensile strength Rm N/mm2 | v RP0.2N/mm2 | Elongation A5 % |
| 800 | 500 | 210 | 35 |
| 800H | 450 | 180 | 35 |
800H alloy has the following characteristics:
1. Excellent corrosion resistance in aqueous media at extremely high temperatures up to 500°C
2. Good resistance to stress corrosion
3. Good processability
Incoloy 800H metallographic structure:
800H is a face-centered cubic lattice structure. The extremely low carbon content and the increased Ti:C ratio increase the stability of the structure and the maximum resistance to sensitization and intergranular corrosion. Low-temperature annealing at around 950°C ensures a fine-grained structure.
Incoloy 800H corrosion resistance:
800H is resistant to corrosion by many corrosive media. Its high nickel content gives it good resistance to stress corrosion cracking under aqueous corrosion conditions. The high chromium content gives it better resistance to pitting and crevice corrosion cracking. The alloy has good resistance to nitric acid and organic acid corrosion, but limited corrosion resistance in sulfuric acid and hydrochloric acid. In addition to the possibility of pitting corrosion in halides, it has good corrosion resistance in oxidizing and non-oxidizing salts. It also has good corrosion resistance in water, steam, and mixtures of steam, air, and carbon dioxide.
