Incoloy 800H nickel-based alloy
Incoloy 800H
Quantity:
Data grade: Incoloy 800H nickel-based alloy
American brand: UNS NO8810
German brand: X2NiCrAITi3220
1. Overview of Incoloy 800H (NO8810) nickel-based alloy:
The Cr content in Incoloy 800H (NO8810) nickel-based alloy is usually 15-25%, the Cr content is 30-45%, and it contains small amounts of aluminum and titanium. Compared with Incoloy800 alloy, the carbon content is controlled from less than or equal to 0.1% to 0.05-0.1%, which better improves the strength of the steel. This alloy has a high chromium content and sufficient nickel content, so it has high high temperature corrosion resistance and is widely used in industry. It has excellent resistance to stress corrosion cracking in hydrides, low-concentration NaOH aqueous solutions and high-temperature and high-pressure water, so it is used to manufacture equipment that is resistant to stress corrosion cracking. The corrosion resistance performance is better than that of general austenitic stainless steel and better than Inconel 600 alloy; in the manufacture of corrosion-resistant stress cracking equipment, it is better than Inconel 600 and Monel 400 alloy.
2. Chemical composition of Incoloy 800H (NO8810) nickel-based alloy: %
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.05-0.10 | 1.00 | 1.50 | 0.020 | 0.015 | 19.0-23.0 | 30.0-35.0 | - | 0.75 |
| other | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
| - | 0.15-0.60 | 0.15-0.60 | 1.00 | - | - | - | - |
3. Incoloy 800H (NO8810) nickel-based alloy implementation standards:
| product | ASTM | |||||||
| Rod | B 408 | |||||||
| Plate, sheet and strip | A 240, A 480, B 409, B 906 | |||||||
| Seamless pipes and fittings | B 407, B 829 | |||||||
| welded pipe | B 514, B 775 | |||||||
| Welded pipe fittings | B 515, B 751 | |||||||
| Welded connections | B 366 | |||||||
| Forgings | B 564 | |||||||
4. Physical properties of Incoloy 800H (NO8810) nickel-based alloy:
1. Density: ρ=8.0g/cm3.
2. Melting temperature range: 1350-1400℃.
3. Specific heat capacity: 455J/(Kg·℃)
4. Magnetism: None.
2. Melting temperature range: 1350-1400℃.
3. Specific heat capacity: 455J/(Kg·℃)
4. Magnetism: None.
| Temperature℃ | σb/MPa | σ0.2/MPa | δ5/% | ||||
| 100 | 425 | 140 | 160 | ||||
| 300 | 390 | 95 | 115 | ||||
| 500 | 360 | 80 | 100 | ||||
| 600 | 300 | 75 | 95 |
5. Incoloy 800H (NO8810) nickel-based alloy processing efficiency:
1. Incoloy 800H (NO8810) alloy hot processing:
(1) The temperature range is 1200℃~950℃, and the cooling pipe is water quenching or rapid air cooling.
(2) In order to obtain the best performance and creep resistance, solution treatment must be carried out after thermal processing.
(3) The data can be directly fed into a furnace that has been heated to 1200°C, kept warm for a sufficient time and then quickly released from the furnace, and then thermally processed within the specified temperature range. When the material temperature drops below the thermal processing temperature, it needs to be reheated.
2. Incoloy 800H (NO8810) alloy cold processing:
(1) The work hardening rate is greater than that of austenitic stainless steel, so processing equipment needs to be selected. Cold worked materials should be in a solution heat treated state, and intermediate annealing should be performed when the amount of cold working is large.
(2) If the amount of cold working is greater than 10%, the workpiece needs to be subjected to secondary solution treatment.
3. Incoloy 800H (NO8810) alloy welding process:
It is suitable for using any traditional welding process with the same material or other base metals, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal pole inert gas shielded welding, melting pole inert gas shielded welding, among which pulsed arc Welding is the preferred option. If manual arc welding is used, it is recommended to use (Ar+He+H2+CO2) as the shielding gas.
(1) The temperature range is 1200℃~950℃, and the cooling pipe is water quenching or rapid air cooling.
(2) In order to obtain the best performance and creep resistance, solution treatment must be carried out after thermal processing.
(3) The data can be directly fed into a furnace that has been heated to 1200°C, kept warm for a sufficient time and then quickly released from the furnace, and then thermally processed within the specified temperature range. When the material temperature drops below the thermal processing temperature, it needs to be reheated.
2. Incoloy 800H (NO8810) alloy cold processing:
(1) The work hardening rate is greater than that of austenitic stainless steel, so processing equipment needs to be selected. Cold worked materials should be in a solution heat treated state, and intermediate annealing should be performed when the amount of cold working is large.
(2) If the amount of cold working is greater than 10%, the workpiece needs to be subjected to secondary solution treatment.
3. Incoloy 800H (NO8810) alloy welding process:
It is suitable for using any traditional welding process with the same material or other base metals, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal pole inert gas shielded welding, melting pole inert gas shielded welding, among which pulsed arc Welding is the preferred option. If manual arc welding is used, it is recommended to use (Ar+He+H2+CO2) as the shielding gas.
6. Application fields of Incoloy 800H (NO8810) nickel-based alloy:
Incoloy 800H (N08810) alloy chemical industry, nuclear generators, nitric acid coolers, acetic anhydride cracking tubes, heat exchange equipment, heat exchange tubes, etc.
7. Varieties, specifications and supply status of Incoloy 800H (NO8810) nickel-based alloy:
Shanghai Disheng Special Alloy can produce various specifications of Incoloy800H seamless pipes, Incoloy800H steel plates, Incoloy800H round bars, Incoloy800H forgings, Incoloy800H flanges, Incoloy800H rings, Incoloy800H welded pipes, Incoloy800H steel strips, Incoloy800H wires and supporting welding materials.
| Variety classification | delivery status | |||||||
| Seamless tube | Solid solution + acid white, length can be customized | |||||||
| plate | Solid solution, pickling, trimming | |||||||
| welded pipe | Solid solution acid whitening + RT% flaw detection | |||||||
| Forgings | Annealing + polishing | |||||||
| Rod | Forged state, surface polished or polished | |||||||
| strip | Cold rolled, solid solution soft state, descaled delivery | |||||||
| wire material | Delivered in solid solution pickled disc shape or straight strip shape, solid solution straight strip in fine polished state | |||||||
Note: Incoloy and 800HT™ are registered trademarks of Specialty Metals Group, Inc.
